Entries |
Document | Title | Date |
20080211610 | Magnet Assembly - A magnet assembly ( | 09-04-2008 |
20080218298 | Sealed Rare Earth Magnet and Method for Manufacturing the Same - It is an object of the present invention to provide a rare earth magnet that will not decompose due to hydrogen embrittlement when used in a hydrogen gas atmosphere, and furthermore, does not pose the risk of contaminating a reaction bath with the surface treated film of the magnet. The present invention provides a sealed rare earth magnet comprising: a rare earth magnet; and a case of aluminum or aluminum alloy, wherein the case covers entirety of the rare earth magnet and is sealed by HIP; and the methods for manufacturing the same. | 09-11-2008 |
20080246572 | Magnet Roller - In a magnet roller of the magnet piece bonding type, the main pole has a high magnetic flux density and the other pole has an asymmetric magnetic flux density pattern with respect to the magnetic flux density peak position. The magnet piece of the main pole is formed by injection molding while performing pole-anisotropic orientation of magnetic particles of the magnet piece. The magnet piece of the other pole is formed by extrusion molding while orientating the magnetic particles in a certain direction inclined by 5 degrees of more with respect to the center line of the radial direction of the magnet piece. The magnet roller is formed by combining the magnet piece of the main pole and the magnet piece of the other pole. | 10-09-2008 |
20090058583 | MAGNET CAP - One or more method(s), system(s), and/or device(s) produces an assembly for securing a product to a dissimilar material, such as a magnet to plastic. A magnet assembly may include a plastic cap having one or more wings extending laterally from a side surface of the plastic cap. A plastic holder defines a product cavity and has one or more grooves formed to integrally fit with the one or more wings of the plastic cap. A magnet is positioned within the product cavity. The plastic cap is joined to the plastic holder, such as through staking or welding, to capture the magnet within the product cavity. | 03-05-2009 |
20090072938 | R-T-B SYSTEM ALLOY AND METHOD OF PREPARING R-T-B SYSTEM ALLOY, FINE POWDER FOR R-T-B SYSTEM RARE EARTH PERMANENT MAGNET, AND R-T-B SYSTEM RARE EARTH PERMANENT MAGNET - The present invention provides an R-T-B system alloy used as a raw material for a rare earth permanent magnet (wherein R represents at least one selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Ho, Er, Tm, Yb and Lu, T represents a transition metal comprising 80% or more by weight of Fe, and B represents a component comprising 50% or more by weight of B and between 0 to less than 50% by weight of at least one selected from the group consisting of C and N), wherein the content of Mn in the alloy is 0.05% or less by weight. | 03-19-2009 |
20090085700 | Open MRI Magnetic Field Generator - A magnet primarily for use in MRI applications comprises a pair of poles oriented about a plane of symmetry parallel to each therebetween defining an air gap region, magnetic field sources secured on the surfaces of the poles opposite the air gap that have yokes disposed on them, the yokes connected to each other by returns so that the entire magnet assembly can form a closed magnetic flux circuit to substantially confine the magnetic fields generated by the apparatus in the air gap where an imaging region is formed to place subjects for the purposes of examination. The main assembly being cylindrical in geometry has permanent magnets for magnetic field sources that are composed of two regions, a central disk-like portion magnetized substantially along the axial direction and an outer ring-like region magnetized substantially along the radial direction extending axially to form part of the pole together producing a very efficient and even flux distribution throughout the entire magnet assembly with minimal flux leakage. A further means of reducing flux leakage is incorporated in the yokes which have two sections, a disk-like region and an ring-like section to enclose the permanent magnets. The poles are made of multiple sections with a central disk-like region and an outer ring-like region that is a combination of permanent magnets and high permeability materials. This magnet assembly can achieve 1.0 Tesla or greater magnetic fields for whole-body scanning without saturating the magnet pole and other structures. | 04-02-2009 |
20090096561 | Rare earth bonded magnet and production method thereof - In order to achieve excellent heat resistance, durability and weatherability for use in an extended range of temperature environments, a rare earth bonded magnet is formed such that a material mixture comprising: a rare earth magnetic powder having a particle diameter ranging from 30 μm to 500 μm; a resin binder constituted by a thermosetting resin; and an organic phosphorous compound, is compression-molded and hardened, wherein the organic phosphorous compound is uniformly dispersed in the resin binder. | 04-16-2009 |
20090108970 | PROCESS FOR PRODUCTION OF MAGNET, MAGNET OBTAINED THEREBY AND PRODUCTION APPARATUS FOR MOLDED ARTICLES FOR MAGNET - A process for production of a magnet which comprises step of supplying a slurry S containing magnetic powder and a dispersing medium into the cavity C of a molding apparatus | 04-30-2009 |
20090146767 | Ferromagnetic Nanorings, Mediums Embodying Same Including Devices and Methods Related Thereto - Featured is a magnetic ring structure including at least a vortex magnetic state such as symmetrically and asymmetrically shaped nanorings, having small diameters (e.g., on the order of 100 nm). In particular embodiments, the width and thickness of the asymmetrical nanorings varies as a function of the locations on the circumference so that maxima and minima thereof are located on opposite sides of the nanoring. Also featured are methods for fabricating such symmetrically and asymmetrically shaped nanorings. Also featured are methods for controlling the reversal process so as to thereby create vortex states in such asymmetric nanorings by controlling the field angle. | 06-11-2009 |
20090184791 | Molded Body - There is provided a molded body having high fixing strength between a magnetic mold material and an external electrode. The molded body uses the magnetic mold material comprising at least 65 vol % of magnetic powder and up to 35 vol % of resin and the external electrode that has pits and projections on a surface that makes contact with the magnetic mold material. The external electrode and the magnetic mold material are integrally-molded such that at least a portion of the external electrode is exposed at at least one surface of the molded body. Spacing between the pit and projection of the external electrode is smaller than the maximum particle size of the magnetic powder. | 07-23-2009 |
20090212893 | CORROSION RESISTANT RARE EARTH MAGNETS AND PROCESSFOR PRODUCTION THEREOF - A corrosion resistant rare earth magnet is obtained by (i) applying a treating liquid comprising a flaky fine powder and a metal sol to a surface of R-T-M-B rare earth permanent magnet and then heating to form a composite film of flaky fine powder/metal oxide on the magnet surface; (ii) applying a treating liquid comprising a flaky fine powder and a silane and/or a partial hydrolyzate thereof to a surface of R-T-M-B rare earth permanent magnet and then heating a flaky fine powder/silane and/or partially hydrolyzed silane coating to form a composite film on the magnet surface; or (iii) applying a treating liquid comprising a flaky fine powder and an alkali silicate to a surface of R-T-M-B rare earth permanent magnet and then heating to form a composite film of flaky fine powder/alkali silicate glass on the magnet surface. | 08-27-2009 |
20090243775 | MAGNETIC HAVING LINEAR MAGNETIC FLUX DENSITY - The present invention relates to a magnet having a linear magnetic flux density, which causes the magnetic flux density thereof to vary linearly and, more particularly, to a magnet having a linear magnetic flux density, in which the shape and magnetization pattern of the magnet are changed so that displacement in proportion to linearly varying displacement from the magnet is more accurately measured using a magnetic flux sensor, thus causing the magnetic flux density to vary linearly (or rectilinearly) according to the displacement. The present invention is configured to have a rectangular shape or a trapezoid shape so that displacement in proportion to linearly varying displacement from the magnet is more accurately measured using a magnetic flux sensor, and is configured such that the value of magnetic flux density varies linearly (rectilinearly) according to the magnetization pattern of the rectangular shape or a trapezoid shape. | 10-01-2009 |
20090261932 | Two-Component Structure Adhesive for the Adhering of Rare Earth Magnets - Disclosed herein is a two-component structural adhesive based on organic compounds containing radically polymerizable multiple bonds, in particular substituted acrylates and/or methacrylates, which on account of their lack of acids are particularly suited for adhering rare earth permanent magnets based on neodymium-iron-boron. | 10-22-2009 |
20090273421 | SPINTRONIC DEVICE WITH CONTROL BY DOMAIN WALL DISPLACEMENT INDUCED BY A CURRENT OF SPIN-POLARIZED CARRIERS - The general field of the invention is that of spintronics, namely the field of electronics using the magnetic spin properties of electrons. The main fields of application are the very large-scale magnetic storage of information and the measurement of local magnetic fields. The object of the invention is to considerably reduce the energy needed to reverse the magnetic domains of the ferromagnetic elements of submicron dimensions using the mechanism of the domain wall displacements that is induced either by just a current of spin-polarized carriers or by the combination of a current of spin-polarized carriers and a magnetic field, at least one of these being variable. This domain wall displacement results in a change of magnetic polarization in a specified switching zone. Several devices according to the invention are described that possess from one switching zone up to a plurality of switching zones according to the invention. | 11-05-2009 |
20090278644 | THIN MULTI-FUNCTION VIBRATION ACTUATOR - A magnetic circuit unit includes a pole piece, a magnet, and a yoke and a suspension is made of a magnetic material, so that a magnetic gap is formed between an end portion of an inner circumferential side surface of the suspension and an end portion of the pole piece. Accordingly, it is possible to prevent the magnet in the magnetic circuit unit from being formed in a thin size. In addition, it is possible to implement a multi-function vibration actuator having a thin structure and capable of obtaining a sufficiently sensible vibration. | 11-12-2009 |
20090289748 | RARE-EARTH MAGNET AND MANUFACTURING METHOD THEREOF AND MAGNET MOTOR - The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in which a layered grain boundary phase is formed on a surface or a potion of a grain boundary of Nd | 11-26-2009 |
20090322459 | PERMANENT MAGNET AND METHOD OF MANUFACTURING SAME - A permanent magnet is provided which has formed a Dy, Tb film on a surface of an iron-boron-rare earth sintered magnet of a predetermined shape, with diffusion thereof into grain boundary phases, having a higher coercive force. The method of manufacturing a permanent magnet includes a film-forming step of evaporating metal evaporating material containing at least one of Dy and Tb and adhering evaporated metal atoms to a surface of the iron-boron-rare earth sintered magnet, and a diffusing step of performing heat treatment to diffuse metal atoms adhered to the surface into grain boundary phases of the sintered magnet. The metal evaporating material contains at least one of Nd and Pr. | 12-31-2009 |
20100007450 | Tone Wheel - A tone wheel constituting a rotation detection magnetic encoder in combination with a magnetic sensor fixed onto a stationary side member, the tone wheel comprising a metal reinforcing ring fitted in a rotary side member and a circular multipolar magnet fixed to the metal reinforcing ring. the circular multipolar magnet is made of a plastic magnet of a circular resin molded product which contains a magnetic powder therein and is magnetized with a number of S and N poles alternatively along its circumference; the circular multipolar magnet is fixed to a surface of the metal reinforcing ring opposed to the magnetic sensor with an adhesive; and a restraint portion is provided at a part of the portion wherein the circular multipolar magnet is fixed to the metal reinforcing ring, thereby fixation of the circular multipolar magnet to the metal reinforcing ring is reinforced and depart of the circular multipolar magnet from the metal reinforcing ring is prevented. | 01-14-2010 |
20100013585 | PROCESS FOR PRODUCING HIGHLY ANTICORROSIVE RARE EARTH PERMANENT MAGNET AND METHOD OF USING THE SAME - A process for producing a highly anticorrosive rare earth permanent magnet, characterized by sequentially subjecting an R—Fe—B sintered magnet to surface finishing involving cutting and/or polishing, plating pretreatment, nickel electroplating to a given plating thickness, immersion in an aqueous solution containing a phosphoric salt, washing with water and heat treatment at 150° to 400° C. for 1 to 24 hr in an atmosphere of 1.3×10 | 01-21-2010 |
20100045411 | R-T-B SINTERED MAGNET AND METHOD FOR PRODUCING THE SAME - An R-T-B based sintered magnet includes both a light rare-earth element R | 02-25-2010 |
20100102911 | G-force emulator - the power source of C-M3 - Gravitational force is a consistent process of attraction. Emulating such phenomenon can be done by the use of spring, steel (and/or magnet) and magnet (and/or electromagnet). Although spring works in repel action instead of attraction, the outcome is exactly the same as gravity. By placing a steel (or magnet) and magnet on the opposite ends of the spring, Gravitational Force can be emulated. | 04-29-2010 |
20100127809 | Direct printable rubber magnet - This utility model is a kind of direct printable rubber magnet, including bonded magnet. The said bonded magnet is applied with coating on surface. The said coating is cemented to the said bonded magnet surface. With coating on surface, this rubber magnet can be directly printed, written and/or beautified on the surface, achieving same effect which current rubber magnets must achieve after laminating with plastic or paper. This makes its structure more simple and can be accomplished by common coating method, so it is reasonable-crafted, simple-operated, easy-applied and cost-saving. This rubber magnet is also easy to be recycled. As this product has no plastic or paper which is difficult to be recycled, and the coating holds a tiny percentage and can be recycled together with the bonded magnets without any other separating process, it is easy to be recycled with low cost, so it is good for environment protection. | 05-27-2010 |
20100141367 | HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME - A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %. | 06-10-2010 |
20100148897 | RARE EARTH SINTERED MAGNET AND METHOD FOR PRODUCING SAME - A sintered rare-earth magnet includes an Nd | 06-17-2010 |
20100164663 | PERMANENT MAGNET AND A MANUFACTURING METHOD THEREOF - [Object] One object of the present invention is to provide a method for manufacturing a permanent magnet which can effectively improving the magnetizing properties and coercive force with efficiently diffusing Dy into grain boundary phases without deteriorating a surface of sintered magnet of Nd—Fe—B family and does not require any subsequent working process. | 07-01-2010 |
20100182113 | R-Fe-B TYPE RARE EARTH SINTERED MAGNET AND PROCESS FOR PRODUCTION OF THE SAME - In an R—Fe—B based rare-earth sintered magnet according to the present invention, at a depth of 20 μm under the surface of its magnet body, crystal grains of an R | 07-22-2010 |
20100188180 | MAGNETIC ELEMENT, AND ANTENNA DEVICE USING THE MAGNETIC ELEMENT - Provided is a magnetic element capable of enhancing fixing strength of a base with respect to a core even if the base is fixed to the core by insert molding. A magnetic element ( | 07-29-2010 |
20100194508 | RARE-EARTH PERMANENT MAGNET - There is provided a rare-earth permanent magnet optimized to an IPM type motor for a car, capable of improving corrosion resistance, abrasion resistance, and impact resistance. The rare-earth permanent magnet | 08-05-2010 |
20100194509 | RARE EARTH MAGNET - A rare earth magnet having a composition represented by RTB wherein R denotes a rare earth element, T a transition metal and B boron, the magnet being composed of magnet powder constituted by crystalline particles. The particles of the magnetic powder have a ratio of a short diameter being 10 μm or more to a long diameter is 0.5 or less. An element Rm having a magnetic anisotropy higher than that of the rare earth element is contained in the surface and inside of the magnet constituted by the magnet powder in an approximately constant concentration. An oxy-fluoride and carbon are present at boundaries of the particles of the magnet powder. | 08-05-2010 |
20100219921 | RARE-EARTH IRON-BASED MAGNET WITH SELF-RECOVERABILITY - A rare-earth iron-based magnet with self-recoverability is provided and includes a plurality of segments, wherein the segments each include a matrix having a microstructure in which rare-earth iron-based aligned magnetic powders of at least one kind are solidified by a cross-linking reaction phase and also in which the cross-liking reaction phase and a viscous deformation phase resulting from on a viscosity flow are chemically bound to each other between the magnetic powders, and wherein while the inner and outer circumferential surfaces of the segments are constrained, the fracture surfaces of the segments, and also the segments on a needed-basis, are mutually aggregated and rigidified together by taking advantage of self-recovery function based on viscous deformation caused by heat and external force and also on cross-linking reaction. | 09-02-2010 |
20100219922 | NANO-COMPOSITE MAGNET, QUENCHED ALLOY FOR NANO-COMPOSITE MAGNET, AND METHOD FOR PRODUCING THEM AND METHOD FOR DISTINGUISHING THEM - A nanocomposite magnet according to the present invention has a composition represented by the general formula: R | 09-02-2010 |
20100231338 | R-Fe-B RARE-EARTH SINTERED MAGNET AND PROCESS FOR PRODUCING THE SAME - First, an R—Fe—B based rare-earth sintered magnet body including, as a main phase, crystal grains of an R | 09-16-2010 |
20100245006 | RARE EARTH BONDED MAGNET - A rare earth bonded magnet is provided which is produced such that a mixture which comprises: a rare earth magnet powder; a resin binder comprising a thermosetting resin; an organic phosphorus compound; and a coupling agent is compress-molded, heated and cured, wherein the organic phosphorus compound and the coupling agent are represented by the following respective chemical formulas (structural formulas): | 09-30-2010 |
20100245007 | PULSAR RING FOR MAGNETIC ROTARY ENCODER - A magnetized layer ( | 09-30-2010 |
20100295644 | R-FE-B BASED SINTERED MAGNET HAVING ON THE SURFACE THEREOF VAPOR DEPOSITED FILM OF ALUMINUM OR ALLOY THEREOF, AND METHOD FOR PRODUCING THE SAME - An objective of the present invention is to provide an R—Fe—B based sintered magnet having on the surface thereof a vapor deposited film of aluminum or an alloy thereof, which maintains excellent adhesion strength with the adhered object even after subjecting it to a severe heat cycle test, and a method for producing the same. As a means for solving the problems, an R—Fe—B based sintered magnet having on the surface thereof a vapor deposited film of aluminum or an alloy thereof of the present invention is characterized in that the vapor deposited film of aluminum or an alloy thereof comprises a columnar crystalline structure grown broader from the surface of the bulk magnet body outward to the outer surface, which has a part within a region defined in the thickness direction of the film as taken from the surface of the bulk magnet body to ⅓ of the film thickness, 5 to 30 intercrystalline gaps of 0.01 μm to 1 μm in width as counted per 10 μm length in the lateral direction of the film are existing at the part. The method for producing the same is characterized by, on forming the vapor deposited film of aluminum or an alloy thereof on the surface of the R—Fe—B based sintered magnet, individually controlling the average film formation rate in the initial stage and in the later stage of the film formation as such that it is slower up to a predetermined point, and that it is speeded up later thereon. | 11-25-2010 |
20100321139 | PERMANENT MAGNET AND METHOD OF PRODUCING PERMANENT MAGNET - A method of producing a permanent magnet includes: forming a multiplicity of solidified ribbons that are composed of nanosized crystal grains by melting a magnet material and rapidly cooling the molten product; binding the multiplicity of solidified ribbons together by compression molding and sintering to form a sintered body; and performing plastic forming on the sintered body to provide the sintered body with a distribution of strain which increases from a peripheral portion to a central portion. | 12-23-2010 |
20110001593 | PERMANENT MAGNET AND METHOD OF MANUFACTURING SAME - By eliminating the necessity of a prior step for cleaning a sintered magnet before adhering Dy and/or Tb to the surface of the sintered magnet S, the productivity of a permanent magnet having diffused Dy and/or Tb into grain boundary phase is improved. Iron-boron-rare earth based sintered magnet (S) disposed in a processing chamber ( | 01-06-2011 |
20110012699 | R-Fe-B RARE EARTH SINTERED MAGNET - An R—Fe—B based rare-earth sintered magnet according to the present invention includes, as a main phase, crystal grains of an R | 01-20-2011 |
20110012700 | PERMANENT MAGNET AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a permanent magnet obtained by sintering a green sheet which is produced by mixing a magnet raw material with a resin binder and molding the resulting mixture, and a method for producing the same. Since the present invention has such a constitution, the contraction due to sintering becomes uniform, whereby the deformations such as warpage and depressions do not occur after sintering. Further, it is unnecessary to perform the conventional correcting processing after sintering, which can simplify the production steps, because the pressure unevenness at the time of pressing disappears. Therefore, it becomes possible to mold the permanent magnet with a high degree of dimension accuracy. Furthermore, even when the permanent magnet is reduced in film thickness, the magnetic characteristics are not deteriorated by the processing-deteriorated layer on the surface. | 01-20-2011 |
20110018663 | Correlated Magnetic Breakaway Device and Method - A breakaway device for locking connected objects in relation to one another comprises a first magnetic field structure attached to a first object and a second magnetic field structure attached to a second object. The first magnetic field structure becoming attached to the second magnetic field structure when substantially aligned. The first structure and the second structure becoming detached when subjected to a force that overcomes a spatial force between the first magnetic field structure and the second magnetic field structure. The first magnetic field structure and the second magnetic field structure having magnetic field sources with polarities and positions in accordance with a code corresponding to a desired spatial force function. | 01-27-2011 |
20110018664 | PERMANENT MAGNET AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a permanent magnet obtained by wet-mixing a Dy compound or a Tb compound with a magnet raw material to coat a surface of the magnet raw material with the Dy compound or the Tb compound, and sintering a green sheet obtained by mixing the resulting magnet raw material with a resin binder and molding the resulting mixture. Since the present invention has the above-mentioned constitution, it becomes possible to sufficiently improve coercive force by Dy or Tb while decreasing the amount of Dy or Tb used. Further, it can be prevented that Dy or Tb is solid-solutionized in magnet particles to decrease residual magnetization. | 01-27-2011 |
20110025440 | R-T-B-TYPE SINTERED MAGNET AND METHOD FOR PRODUCTION THEREOF - An R-T-B based sintered magnet according to the present invention has a composition including: 27.3 mass % to 29.5 mass % of R; 0.92 mass % to 1 mass % of B; 0.05 mass % to 0.3 mass % of Cu; 0.02 mass % to 0.5 mass % of M; and T as the balance, and has an oxygen content of 0.02 mass % to 0.2 mass %. The main phase of the sintered magnet is an R | 02-03-2011 |
20110037548 | PERMANENT MAGNET AND PROCESS FOR PRODUCING PERMANENT MAGNET - The present invention relates to a permanent magnet manufactured by steps of: wet-pulverizing a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic in a solvent together with a magnet raw material to pulverize the magnet raw material into fine particles having a grain size of 3 μm or less and to coat a surface of the pulverized magnet raw material with the high-melting metal element-containing organic compound or the precursor of the high-melting ceramic; adding a resin binder to the magnet raw material coated with the high-melting metal element-containing organic compound or the precursor of the high-melting ceramic; producing a slurry by kneading the magnet raw material and the resin binder; molding the slurry into a sheet form to prepare a green sheet; and sintering the green sheet. | 02-17-2011 |
20110037549 | RARE EARTH METAL-BASED PERMANENT MAGNET - An objective of the present invention is to provide a rare earth metal-based permanent magnet with improved adhesion properties. A rare earth metal-based permanent magnet of the present invention as a means for achieving the objective has a laminated plating film, and is characterized in that the plating film comprises as an outermost surface layer a SnCu alloy plating film having a film thickness in a range from 0.1 μm to 2 μm, the composition of the SnCu alloy plating film is 35 mass % or more but less than 55 mass % of Sn and the rest being Cu, and a base plating film having two or more layers including at least a Ni plating film and a Cu plating film which are formed as the lower layer under the SnCu alloy plating film, and among the base plating film, the Ni plating film is located just below the SnCu alloy plating film. A joined structure fabricated using the rare earth metal-based permanent magnet of the present invention exhibits favorable initial adhesion strength when combined with a silicone-based adhesive, and is less deteriorated in adhesion strength even after a moisture resistance test. | 02-17-2011 |
20110043311 | PERMANENT MAGNET AND PROCESS FOR PRODUCING PERMANENT MAGNET - The present invention relates to a permanent magnet manufactured by steps of: pulverizing a magnet raw material; mixing the pulverized magnet raw material with a rust preventive oil in which a Dy compound or a Tb compound is dissolved, thereby preparing a slurry; compression molding the slurry to form a molded body; and sintering the molded body. | 02-24-2011 |
20110057756 | Rare Earth Composite Magnets with Increased Resistivity - Dielectric rare earth fluorides are blended with rare earth magnet powders to produce high-resistivity fluoride composite rare earth magnets. | 03-10-2011 |
20110074530 | MIXED RARE-EARTH PERMANENT MAGNET AND METHOD OF FABRICATION - A permanent magnet comprises boron, cobalt, a metallic alloy component, about 28-35 weight percent of mixed rare-earth material, and iron as a balance. The metallic alloy component is selected from the group consisting of aluminum, copper, niobium, gallium, vanadium, chromium, zirconium, and combinations thereof. The mixed rare-earth material comprises light rare-earth material and heavy rare-earth material. The light rare-earth material comprises at least about 50 weight percent of praseodymium and about 5-50 weight percent of neodymium. The heavy rare-earth material comprises dysprosium or a combination of dysprosium and terbium. The mixed rare-earth material comprises about 3-45 weight percent of heavy rare-earth material. A sum of intrinsic coercivity in the unit of kilo Oersted (kOe) and maximum energy product in unit of mega gauss Oersteds (MGOe) of the permanent magnet is at least about 55. | 03-31-2011 |
20110074531 | ANISOTROPIC RARE EARTH-IRON BASED RESIN BONDED MAGNET - Anisotropic rare earth-iron based resin bonded magnet comprises: [1] a continuous phase including: (1) a spherical Sm | 03-31-2011 |
20110090032 | RARE EARTH PERMANENT MAGNET AND ITS PREPARATION - A rare earth permanent magnet is prepared by disposing a powdered metal alloy containing at least 70 vol % of an intermetallic compound phase on a sintered body of R—Fe—B system, and heating the sintered body having the powder disposed on its surface below the sintering temperature of the sintered body in vacuum or in an inert gas for diffusion treatment. The advantages include efficient productivity, excellent magnetic performance, a minimal or zero amount of Tb or Dy used, an increased coercive force, and a minimized decline of remanence. | 04-21-2011 |
20110095855 | R-T-Cu-Mn-B TYPE SINTERED MAGNET - An R-T-Cu—Mn—B based sintered magnet includes: 12.0 at % to 15.0 at % of R, which is at least one of the rare-earth elements that include Y and of which at least 50 at % is Pr and/or Nd; 5.5 at % to 6.5 at % of B; 0.08 at % to 0.35 at % of Cu; 0.04 at % to less than 0.2 at % of Mn; at most 2 at % (including 0 at %) of M, which is one, two, or more elements that are selected from the group consisting of Al, Ti, V, Cr, Ni, Zn, Ga, Zr, Nb, Mo, Ag, In, Sn, Hf, Ta, W, Au, Pb and Bi; and T as the balance, which is either Fe alone or Fe and Co and of which at most 20 at % is Co if T includes both Fe and Co. | 04-28-2011 |
20110102116 | MAGNETIC WRITER HAVING MULTIPLE GAPS WITH MORE UNIFORM MAGNETIC FIELDS ACROSS THE GAPS - A magnetic device according to one embodiment includes a source of flux; a magnetic pole coupled to the source of flux, the magnetic pole having two or more gaps; and a low reluctance path positioned towards at least one of the gaps and not positioned towards at least one other of the gaps for affecting a magnetic field formed at the at least one of the gaps when the source of flux is generating flux. Other disclosed embodiments include devices having coil turns with a non-uniform placement in the magnetic yoke for altering a magnetic field formed at the at least one of the gaps during writing. In further embodiments, a geometry of the magnetic pole near or at one of the gaps is different than a geometry of the magnetic pole near or at another of the gaps to help equalize fields formed at the gaps when the source of flux is generating flux. | 05-05-2011 |
20110102117 | PROCESS FOR THE PRODUCTION OF MACROSCOPIC NANOSTRUCTURED PERMANENT MAGNETS WITH HIGH DENSITY OF MAGNETIC ENERGY AND CORRESPONDING MAGNETS - Process for the production of permanent magnets, of the kind that allows the production of nanostructured alloys (containing a volume fraction lower than 10% of the rare-earth-based stoichiometric compound) in the form of a multilayered material, comprising a stoichiometric hard phase containing rare earths localized in a series of stacked layers intercalated by soft ferromagnetic layers. According to the invention, comprises producing nanostructured elements along a respective vertical axis by means of an inkjet printing system and the parallelization of such productive phase, by means of matrices of productive elements. | 05-05-2011 |
20110128106 | Rare earth magnet having high strength and high electrical resistance - This rare earth magnet having high strength and high electrical resistance has a structure including an R—Fe—B-based rare earth magnet particles | 06-02-2011 |
20110205006 | R-Fe-B ANISOTROPIC SINTERED MAGNET - An R—Fe—B based anisotropic sintered magnet according to the present invention has, as a main phase, an R | 08-25-2011 |
20110210810 | ND BASED SINTERED MAGNET AND ITS PREPARATION - The invention provides a sintered Nd base magnet which is free of a decline of remanence, has a high coercive force, especially at the edges thereof, is unsusceptible to demagnetization even at high temperature, and is suited for use in permanent magnet rotary machines. | 09-01-2011 |
20110234345 | COMBINED MAGNETIC BODY, COMBINED MAGNETIC BODY PRODUCTION METHOD, COMBINED MAGNETIC BODY INJECTION APPARATUS, COMBINED MAGNETIC BODY INJECTION CONTROL SYSTEM, MAGNETIC FIELD CONTROL APPARATUS AND COMBINED MAGNETIC BODY INJECTION CONTROL METHOD - According to one aspect of the present invention, a combined magnetic body includes a plurality of nanowires composed of a magnetic material. In the combined magnetic body, the nanowires are combined together to be formed into a tubular structure or a basket-shaped structure. | 09-29-2011 |
20110234346 | BONDED RARE EARTH MAGNET - A bonded rare earth magnet which exhibits excellent magnetic properties for a long time is provided by improving oxidation resistance at high temperatures. The magnet has a magnet body ( | 09-29-2011 |
20110234347 | POLE PIECE FOR PERMANENT MAGNET MRI SYSTEMS - A pole piece for a permanent magnet MRI system and a method for increasing the stability of a gradient field in an MRI system. The method includes: obtaining an MRI system comprising a magnet capable of providing a gradient magnetic field within an image volume in an air gap; and fixing a plurality of pole pieces within said MRI system, thereby defining the air gap, the raw material of construction of the pole piece being a material including a plurality of ferromagnetic particles coated with an electrically insulating substance. The fixing increases the stability of said gradient field by at least 10% relative to that of a gradient magnetic field in an MRI system identical except for the use of the material in the fabrication of the pole pieces. | 09-29-2011 |
20110234348 | RARE-EARTH MAGNET, METHOD OF MANUFACTURING RARE-EARTH MAGNET, AND ROTATOR - A rare-earth magnet is an R-T-B-based rare-earth magnet containing a rare-earth element R, a transition metal element T, and boron B. The rare-earth magnet further contains Cu and Co, while having a Cu concentration distribution with a gradient along a direction from a surface of the rare-earth magnet to the inside thereof, Cu having a higher concentration on the surface side of the rare-earth magnet than on the inside thereof, and a Co concentration distribution with a gradient along a direction from the surface of the rare-earth magnet to the inside thereof, Co having a higher concentration on the surface side of the rare-earth magnet than on the inside thereof. The rare-earth magnet is excellent in corrosion resistance. | 09-29-2011 |
20110234349 | PENCIL CORE - In a pencil core having a substantially circular cross-section, a stack of laminations are bonded together with bonding layers on each lamination which is heated and cured. The bonded stack has no embossments, has no cutouts forming channels at end faces, and also has no welds at end faces of the pencil core to hold the laminations together. The pencil core has a substantially circular cross-section. | 09-29-2011 |
20110234350 | MODIFIED ND-FE-B PERMANENT MAGNET WITH HIGH CORROSION RESISTANCE - A type of sintered Nd—Fe—B permanent magnet with high corrosion resistance is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050˜1125° C., and annealing at 920-1020° C. and 500-650° C. successively | 09-29-2011 |
20110241810 | PERMANENT MAGNET AND METHOD FOR MANUFACTURING THE SAME, AND MOTOR AND POWER GENERATOR USING THE SAME - According to one embodiment, a permanent magnet is provided with a sintered body having a composition represented by R(Fe | 10-06-2011 |
20110241811 | CYLINDRICAL BONDED MAGNET, METHOD FOR PRODUCING A CYLINDRICAL BONDED MAGNET, AND ROD-SHAPED MAGNET DEVICE - A cylindrical bonded magnet is provided which is multipolar-magnetized in the axial direction and can be produced with high productivity. The cylindrical bonded magnet includes magnetic powder and resin. The cylindrical bond magnet is an integrally formed member. The cylindrical bond magnet is magnetized so that a plurality of N and S poles are alternately provided in the axial direction. In the cylindrical bonded magnet, a totally even number of at least four N and S poles are alternately provided. The surface magnetic flux density distribution has a substantially sinusoidal wave with the both ends of the sinusoidal wave corresponding to nodes when the surface magnetic flux of the cylindrical bonded magnet is measured as viewed from the side surface of the cylindrical bond magnet along the axial direction. | 10-06-2011 |
20110241812 | MAGNETIC FIELD GENERATOR BASED ON DUAL PERMANENT MAGNET RINGS - A magnet assembly primarily for use in MRI applications is disclosed comprising two main permanent magnet rings that are spaced-apart and arranged to be coaxially aligned with two easy-access openings. The magnetization direction in each magnet ring is substantially radially oriented and maintains an anti-parallel orientation with respect to each other. Together, these two magnet rings create a homogeneous and strong magnetic field in the central enclosure between them with two orthogonal access paths to the enclosure. Through one access pathway a patient can be inserted while through the other pathway a doctor can fully access the patient and perform interventional procedures during a real-time MRI scan. Embodiments of the system also have poles and yokes that shape the field and minimize fringe fields. Embodiments of this magnet assembly can achieve high magnetic fields for whole-body scanning without saturating the magnet pole and other structures. | 10-06-2011 |
20110241813 | MAGNET CAP - One or more method(s), system(s), and/or device(s) produces an assembly for securing a product to a dissimilar material, such as a magnet to plastic. A magnet assembly may include a plastic cap having one or more wings extending laterally from a side surface of the plastic cap. A plastic holder defines a product cavity and has one or more grooves formed to integrally fit with the one or more wings of the plastic cap. A magnet is positioned within the product cavity. The plastic cap is joined to the plastic holder, such as through staking or welding, to capture the magnet within the product cavity. | 10-06-2011 |
20110254646 | HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME - A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %. | 10-20-2011 |
20110260816 | R-Fe-B RARE-EARTH SINTERED MAGNET AND PROCESS FOR PRODUCING THE SAME - First, an R—Fe—B based rare-earth sintered magnet body including, as a main phase, crystal grains of an R | 10-27-2011 |
20110267160 | PERMANENT MAGNET AND PROCESS FOR PRODUCING PERMANENT MAGNET - The present invention relates to a permanent magnet manufactured by steps of: pulverizing a magnet raw material into fine particles having a grain size of 3 μm or less; mixing the pulverized magnet raw material with a rust preventive oil in which a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic is dissolved, thereby preparing a slurry; compression molding the slurry to form a molded body; and sintering the molded body. | 11-03-2011 |
20110273252 | CORROSION-RESISTANT MAGNET AND METHOD FOR PRODUCING THE SAME - An object of the present invention is to provide an R—Fe—B based sintered magnet that exhibits excellent corrosion resistance and maintains excellent adhesion strength to an adherend even under severe conditions, and a method for producing the same. A corrosion-resistant magnet of the present invention as a means for achieving the object is characterized by comprising a chemical conversion film containing at least Zr, V, Al, fluorine, and oxygen as constituent elements and not containing phosphorus over a surface of an R—Fe—B based sintered magnet with a film made of Al or an alloy thereof therebetween. | 11-10-2011 |
20110279205 | R-T-B RARE EARTH SINTERED MAGNET - A rare earth sintered magnet consists essentially of 26-36 wt % R, 0.5-1.5 wt % B, 0.1-2.0 wt % Ni, 0.1-3.0 wt % Si, 0.05-1.0 wt % Cu, 0.05-4.0 wt % M, and the balance of T and incidental impurities wherein R is a rare earth element, T is Fe or Fe and Co, M is selected from Ga, Zr, Nb, Hf, Ta, W, Mo, Al, V, Cr, Ti, Ag, Mn, Ge, Sn, Bi, Pb, and Zn. Simultaneous addition of Ni, Si, and Cu ensures magnetic properties and corrosion resistance. | 11-17-2011 |
20110285487 | ELECTROMAGNETIC ENERGY TRANSDUCER - An electromagnetic energy transducer configured to convert mechanical energy into electrical energy comprises two magnetic elements including a permanent magnetic element and a soft-magnetic element and an electrical coil. The permanent magnetic element and the soft-magnetic element are arranged to form a magnetic circuit and one of the two magnetic elements is movable in relation to the other of the two magnetic elements. The electrical coil surrounds a part of the soft magnetic element. The movable magnetic element is held in a first position by a spring force and moved into a second position by applying an external mechanical force exceeding the spring force, and at the first position the magnetic flux within the soft magnetic element is different than the flux at the second position. | 11-24-2011 |
20110298571 | RARE EARTH MAGNETIC MATERIALS COMPRISING GALLIUM AND METHODS OF MAKING THE SAME - Disclosed herein are rare earth permanent magnets comprising Ga, and a magnetic intermetallic compound. In one embodiment, the magnetic intermetallic compound comprises at least one rare earth element (R), at least three transition metal elements (T), with the balance comprising iron. Non-limiting examples of R include Y, Nd, Pr, and Dy; and non-limiting examples of T include Cu, AI, and Co. Methods of making the disclosed rare earth permanent magnets are also disclosed. | 12-08-2011 |
20120001711 | Permanent magnet with low or no dysprosium for high temperature performance - A permanent magnet operable above about 125 C to about 200 C has a major phase represented by MRE | 01-05-2012 |
20120032764 | ALLOY FOR SINTERED R-T-B-M MAGNET AND METHOD FOR PRODUCING SAME - In order to make a sintered R-T-B-M magnet so that R | 02-09-2012 |
20120075046 | PERMANENT MAGNET AND MOTOR AND GENERATOR USING THE SAME - In one embodiment, a permanent magnet has a composition represented by (Sm | 03-29-2012 |
20120086531 | PERMANENT MAGNET AND A MANUFACTURING METHOD THEREOF - A method for manufacturing a permanent magnet can effectively improve the magnetizing properties and coercive force with efficiently diffusing Dy into grain boundary phases without deteriorating a surface of sintered magnet of Nd—Fe—B family and does not require any subsequent working process. Sintered magnet S of Nd—Fe—B family and Dy are arranged in a processing chamber apart from each other. Then Dy is evaporated by heating the processing chamber under a reduced pressure condition to evaporate Dy with elevating the temperature of sintered magnet S to a predetermined temperature and to supply and deposit evaporated Dy atoms onto the surface of sintered magnet S. During which the supplying amount of Dy atoms onto the sintered magnet S is controlled so as to diffuse and homogeneously penetrate them into the grain boundary phases of sintered magnet before Dy layer is formed on the surface of sintered magnet. | 04-12-2012 |
20120092106 | COMPOSITE MAGNETIC BODY AND METHOD FOR PRODUCING THE SAME - A composite magnetic body is formed by pressure-molding Fe—Al—Si based magnetic metal powder having a composition not more than 5.7 wt % and not less than 8.5 wt % of Al, not more than 6.0 wt % and not less than 9.5 wt % of Si, and the balance of Fe together with an insulating binder, and heat-treating the molded powder at a temperature ranging from 600° C. to 900° C. The magnetic metal powder has a negative magnetocrystalline anisotropy constant at a room temperature, and has a positive magnetostriction constant at the room temperature. A temperature coefficient of core loss at the room temperature is negative. This composite magnetic body has improved temperature characteristics of the core-loss as well as excellent soft magnetic characteristics, such as lower loss and higher permeability. | 04-19-2012 |
20120098630 | CYLINDRICAL PERMANENT MAGNET DEVICE WITH AN INDUCED MAGNETIC FIELD HAVING A PREDETERMINED ORIENTATION, AND PRODUCTION METHOD - A cylindrical permanent magnet device that induces in a central area of interest a homogeneous magnetic field of predetermined orientation relative to a longitudinal axis (z) of the device comprises first and second annular magnetized structures ( | 04-26-2012 |
20120105184 | ANISOTROPIC RARE EARTH SINTERED MAGNET AND MAKING METHOD - An anisotropic rare earth sintered magnet has a tetragonal R | 05-03-2012 |
20120105185 | METHOD FOR PRODUCING SINTERED FERRIT MAGNET, AND SINTERED FERRITE MAGNET - A sintered ferrite magnet comprising (a) a ferrite phase having a hexagonal M-type magnetoplumbite structure comprising Ca, an element R which is at least one of rare earth elements and indispensably includes La, an element A which is Ba and/or Sr, Fe, and Co as indispensable elements, the composition of metal elements of Ca, R, A, Fe and Co being represented by the general formula of Ca | 05-03-2012 |
20120112861 | METHOD OF MANUFACTURING A MAGNET ASSEMBLY - A method of manufacturing a magnet assembly that includes surrounding a bonded magnet with a sleeve, heating the magnet, and compressing the magnet in an axial direction such that the magnet and sleeve expand in a radial direction. | 05-10-2012 |
20120112862 | RARE EARTH MAGNET AND METHOD FOR MANUFACTURING SAME - A rare-earth element including a magnet body containing a rare-earth element, and a protective layer formed on a surface of the magnet body. The protective layer may include a first layer covering the magnet body and containing a rare-earth element, and a second layer covering the first layer and containing substantially no rare-earth element. Another protective layer in accordance may include an inner protective layer and an outer protective layer successively from the magnet body side. The outer protective layer is any of an oxide layer, a resin layer, a metal salt layer, and a layer containing an organic-inorganic hybrid compound. | 05-10-2012 |
20120112863 | PROCESS FOR PRODUCTION OF R-T-B BASED SINTERED MAGNETS AND R-T-B BASED SINTERED MAGNETS - A method for producing a sintered R-T-B based magnet includes the steps of: providing a sintered R-T-B based magnet body | 05-10-2012 |
20120119860 | MAGNETIC BODY AND A PROCESS FOR THE MANUFACTURE THEREOF - There is disclosed a magnetic body comprising an agglomeration of bonded rare earth magnetic particles characterized in that said magnetic body exhibits a maximum energy product loss (ΔBHmax) of 12% or less as measured by ASTM 977/977M when subjected to a temperature of 180° C. for 1000 hours and a process for the manufacture of the same. | 05-17-2012 |
20120133466 | Method and Apparatus for Coil-less Magnetoelectric Magnetic Flux Switching for Permanent Magnets - Methods and apparatus that employ a coil-less magnetoelectric flux switch arrangement to repeatedly switch magnetic flux from at least one permanent magnet for the purposes of generating motive force and/or electrical energy. | 05-31-2012 |
20120161910 | FERRITE MAGNETIC MATERIAL - An object of the present invention is to provide a ferrite magnetic material capable of providing a permanent magnet in which high Br and HcJ are kept, and which has a high Hk/HcJ. A ferrite magnetic material in accordance with a preferred embodiment has a ferrite phase having a hexagonal structure and has a main composition represented by Ca | 06-28-2012 |
20120176211 | SINTERED NdFeB MAGNET AND METHOD FOR MANUFACTURING THE SAME - Disclosed is a sintered NdFeB magnet having high coercivity (H | 07-12-2012 |
20120176212 | METHOD AND SYSTEM FOR PRODUCING SINTERED NdFeB MAGNET, AND SINTERED NdFeB MAGNET PRODUCED BY THE PRODUCTION METHOD - A method and system for producing a slim-shaped sintered NdFeB magnet having a high level of coercive force and high degree of orientation, as well as a sintered NdFeB magnet produced by the aforementioned method or system. A system for producing a slim-shaped sintered NdFeB magnet according to the present invention includes: a filling unit and filling alloy powder; an orienting unit; a sintering furnace; and a conveying unit. The orienting unit is provided with a heating and orienting coil for heating the alloy powder in the molds before and/or after the application of the magnetic field so as to decrease the coercive force of the individual particles of the alloy powder. | 07-12-2012 |
20120182102 | METHOD OF MAKING ND-FE-B SINTERED MAGNETS WITH DY OR TB - A method of making a permanent magnet is described. In one embodiment, the method includes providing a first alloy powder having a desired composition, the alloy powder containing neodymium, iron, and boron; coating the first alloy powder with dysprosium, dysprosium alloy. terbium, or terbium alloy so that the first alloy powder has a surface concentration of dysprosium, terbium, or both in excess of a bulk concentration of dysprosium, terbium, or both; and forming the permanent magnet from the coated alloy powder using a powder metallurgy process, the permanent magnet having a non-uniform distribution of dysprosium, terbium, or both therein. Permanent magnets are also described. | 07-19-2012 |
20120182103 | MAGNET AND METHOD OF MANUFACTURING OF THE SAME - A magnet includes: a magnet main body; and an ultraviolet curing resin layer formed on a surface of the magnet main body. | 07-19-2012 |
20120182104 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof enabling carbon content contained in magnet particles to be reduced in advance before sintering even when wet milling is employed, and also the entirety of the magnet to be densely sintered without making a gap between a main phase and a grain boundary phase in the sintered magnet. Coarsely-milled magnet powder is further milled by a bead mill in an organic solvent. Thereafter, a compact body of compacted magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius to perform hydrogen calcination process. Thereafter, through sintering process, a permanent magnet | 07-19-2012 |
20120182105 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof capable of preventing degrade in the magnetic properties by densely sintering the entirety of the magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR) | 07-19-2012 |
20120182106 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof capable of preventing grain growth in a main phase and enabling rare-earth rich phase to be uniformly dispersed. To fine powder of milled neodymium magnet material is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR) | 07-19-2012 |
20120182107 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof that enables concentration of V, Mo, Zr, Ta, Ti, W or Nb contained in an organometallic compound in grain boundaries of the permanent magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR) | 07-19-2012 |
20120182108 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof capable of densely sintering the entirety of the magnet without making a gap between a main phase and a grain boundary phase in the sintered magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR) | 07-19-2012 |
20120182109 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof capable of inhibiting grain growth of magnet grains having single domain particle size during sintering so as to improve magnetic properties. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR) | 07-19-2012 |
20120188038 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof capable of manufacturing metal alkoxide in better work environment, simpler production facilities and easier manufacturing process and also reducing the manufacturing costs. | 07-26-2012 |
20120194310 | PERMANENT MAGNET AND MANUFACTURING METHOD THEREOF - There are provided a permanent magnet and a manufacturing method thereof capable of densely sintering the entirety of the magnet without making a gap between a main phase and a grain boundary phase in the sintered magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M- (OR) | 08-02-2012 |
20120206227 | R-Fe-B TYPE RARE EARTH SINTERED MAGNET AND PROCESS FOR PRODUCTION OF THE SAME - In an R—Fe—B based rare-earth sintered magnet according to the present invention, at a depth of 20 μm under the surface of its magnet body, crystal grains of an R | 08-16-2012 |
20120229239 | Layered magnet - A layered magnet for a magnet arrangement of an electrical machine includes a number of primary magnet layers and a number of subordinate magnet layers, wherein each magnet layer includes a ferromagnet with a layer concentration of a lanthanide, and wherein the layer concentration of the lanthanide is greatest in a primary magnet layer. Further, a method of manufacturing such a layered magnet and an electrical machine with a magnet arrangement are provided. | 09-13-2012 |
20120229240 | R-Fe-B RARE EARTH SINTERED MAGNET AND METHOD FOR PRODUCING SAME - In a method for producing an R—Fe—B based rare-earth sintered magnet according to the present invention, first, provided is an R—Fe—B based rare-earth sintered magnet body including, as a main phase, crystal grains of an R | 09-13-2012 |
20120235778 | R-T-B RARE EARTH SINTERED MAGNET - The invention provides an R-T-B rare earth sintered magnet | 09-20-2012 |
20120242438 | MAGNETIC OSCILLATION ELEMENT AND SPIN WAVE DEVICE - According to one embodiment, a magnetic oscillation element includes a first electrode/a second magnetic layer/a nonmagnetic spacer layer/a first magnetic layer/ a second electrode, stacked in this order. The first magnetic layer has variable magnetization direction. The second magnetic layer has fixed magnetization direction. A thickness of the first magnetic layer in a direction connecting the first and second electrodes is greater than 2 times a spin penetration depth of the first magnetic layer. The thickness of the first magnetic layer is less than a maximum width of the second electrode. The first magnetic layer has edge portion provided outside the first surface when viewed along the direction. A width of the edge portion in a direction perpendicular to a tangent of an edge of the second electrode is not less than an exchange length of the first magnetic layer. | 09-27-2012 |
20120242439 | MAGNET MEMBER - A magnet member excellent in both corrosion resistance and adhesion is provided. The magnet member | 09-27-2012 |
20120256717 | DISPLAY DEVICES, ACCESSORIES THEREFOR AND METHODS - A kit of components for use with a pin permeable board, the kit of components comprising a pin suitable for penetrating the pin permeable board for frictional engagement with the pin permeable board; and a magnet; further wherein the pin has a gripping handle, the gripping handle having a magnet attractive top surface configured to receive the magnet; whereby the magnet can be attached to the gripping handle by magnetic force thereby to allow an object to be displayed to be secured to the gripping handle between the handle and the magnet, and wherein the magnet remains in position on the gripping handle by magnetic attraction through the object when the pin is engaged in a vertically disposed pin permeableboard. | 10-11-2012 |
20120268226 | MAGNETIC PARTICLE, HIGH FREQUENCY MAGNETIC MATERIAL AND HIGH FREQUENCY DEVICE - A magnetic particle includes a metallic magnetic and a coating film. The coating film includes an oxide, a nitride, a carbide or a fluoride, and covers the metallic magnetic. Hydrophobic treatment using a hydrophobing agent is carried out on the magnetic particle. | 10-25-2012 |
20120280775 | RARE EARTH PERMANENT MAGNETS AND THEIR PREPARATION - A sintered magnet body (R | 11-08-2012 |
20120286911 | Variable effort magnetic brake assist for physically handicapped persons - A magnetic reduced effort braking apparatus for use to reduce the amount of effort required to depress the brake pedal of a vehicle. A rigid plate is secured to the floor of a vehicle between the gas pedal and the brake pedal and adjacent to the brake pedal and a first magnet is secured to the rigid plate. A second magnet is secured to the underside of the brake pedal slightly aligned with but slightly offset from the location of the first magnet. The magnets attract one another and reduce the amount of foot pressure required to depress the brake pedal. | 11-15-2012 |
20120299675 | ANISOTROPIC RARE EARTH MAGNET AND METHOD FOR PRODUCING THE SAME - A method for producing an anisotropic rare earth magnet according to the present invention comprises a forming step of obtaining a formed body by press-forming a mixed raw material of a magnet raw material capable of generating R | 11-29-2012 |
20120299676 | CORROSION-RESISTANT MAGNET AND METHOD FOR PRODUCING THE SAME - An object of the present invention is to provide an R—Fe—B based sintered magnet having on a surface thereof a chemical conversion film with higher corrosion resistance than a conventional chemical conversion film such as a phosphate film, and a method for producing the same. The R—Fe—B based sintered magnet having a chemical conversion film on the surface thereof of the present invention as a means for achieving the object is characterized by comprising a chemical conversion film on a surface of an R—Fe—B based sintered magnet wherein R is a rare-earth element including at least Nd, the chemical conversion film having a laminate structure including at least an inner layer that contains R, fluorine, and oxygen as constituent elements and an outer layer that is amorphous and contains Zr, Fe, and oxygen as constituent elements, provided that no phosphorus is contained in the film. | 11-29-2012 |
20130009735 | PERMANENT MAGNET OPTIONS FOR MAGNETIC DETECTION AND SEPARATION - RING MAGNETS WITH A CONCENTRIC SHIM - Permanent magnet assemblies include a central cylindrical magnet having a bore. The cylindrical magnet is magnetized along a selected radial direction and is enclosed within a ferromagnetic shim. A uniform magnetic field, field gradient, or other field distribution can be produced in the bore based on the bore cross-sectional shape. | 01-10-2013 |
20130009736 | ANISOTROPIC RARE EARTH MAGNET POWDER, METHOD FOR PRODUCING THE SAME, AND BONDED MAGNET - The anisotropic rare earth magnet powder of the present invention includes powder particles having R | 01-10-2013 |
20130027160 | SINTERED MAGNET AND METHOD FOR PRODUCING THE SINTERED MAGNET - The present invention aims to ensure strength of a thin-walled sintered magnet. A sintered magnet is a ferrite sintered magnet made by sintering a magnetic material. A magnetic powder mixture obtained by mixing magnetic powder with a binder resin is injection-molded into a mold with a magnetic field applied thereto to produce a molded body, which is then sintered to produce the sintered magnet. The sintered magnet has a thickness of 3.5 mm or less in the position of center of gravity thereof. The sintered magnet has a surface roughness Rz of 0.1 or more and 2.5 μm or less. The surface roughness Rz is a 10 point average roughness. | 01-31-2013 |
20130049908 | COMPONENT AND MANUFACRING PROCESS OF RARE EARTH PERMANENT MAGNET MATERIAL - The invention relates to a component of rare earth permanent magnet material, and the atomic percents of the material are Re(x)Fe(100x-z-a-b-c)B(z)Nb(a)Al(b)M(c), wherein x=12-16, z=5.5-6.5, a=0.05-1, b=0-0.8, and c=0-3. Re stands for rare earth elements, which comprises one or more of Nd, Pr, Gd, Ho, Dy and Tb. By adding Nb, Hcj can be improved, the rectangle degree of J-H demagnetization curve can be improved, and the temperature stability of the product can also be improved; and by adding Nb, the amount of Dy and Tb in heavy rare earth can be reduced, and the cost of the material can also be reduced. | 02-28-2013 |
20130057373 | MOLD FOR MAKING PRODUCTS WITH CO-MOLDED INSERTS - A molding system with inserts placed on the die and/or the punch of the mold, which allows one to obtain molded products with co-molded ferromagnetic inserts on the surfaces thereof. | 03-07-2013 |
20130069746 | Sintered Magnet - Disclosed is a sintered magnet which is a rare-earth magnet using a less amount of a rare-earth element but having a higher maximum energy product and a higher coercivity. The sintered magnet includes a NdFeB crystal; and an FeCo crystal adjacent to the NdFeB crystal through the medium of a grain boundary. The FeCo crystal includes a core and a periphery and has a cobalt concentration decreasing from the core to the periphery. The FeCo crystal has a difference in cobalt concentration of 2 atomic percent or more between the core and the periphery. In the NdFeB crystal, cobalt and a heavy rare-earth element are unevenly distributed and enriched in the vicinity of the grain boundary. | 03-21-2013 |
20130069747 | CASE-INTEGRATED BONDED MAGNET AND PRODUCTION METHOD FOR SAME - A production method for a case-integrated bonded magnet includes: filling a tubular cavity with a magnet raw material that includes a rare-earth magnet powder and a thermosetting resin binder; heating the magnet raw material to cause the thermosetting resin softened or melted while compressively molding the magnet raw material to obtain a tubular compact; discharging the tubular compact from the tubular cavity while press-fitting the tubular compact into a metal tubular case having an inner peripheral surface coaxial with the tubular cavity; and heat-curing the tubular compact with the tubular case to cure the thermosetting resin. The tubular compact press-fitted into the tubular case is thermally cured thereby causing the tubular compact to transform to a tubular bonded magnet, which expands unexpectedly due to heat. | 03-21-2013 |
20130093551 | R-Fe-B based magnet having gradient electric resistance and method for producing the same - An R—Fe—B based magnet having gradient electric resistance and a method for producing the same are provided. The magnet includes an exterior layer (G) and a main body layer (H). The exterior layer (G) is connected with the main body layer (H) via a sintered layer (I). The oxygen content in the exterior layer (G) is higher than the oxygen content in the main body layer (H), so the electrical resistivity of the exterior layer (G) is not lower than the electrical resistivity of the main body layer (H). The R—Fe—B based magnet having gradient electric resistance is capable of maintaining high resistance and excellent magnetic performance simultaneously. | 04-18-2013 |
20130093552 | Neodymium-Iron-Boron Magnet having Gradient Coercive Force and its Preparation Method - A neodymium-iron-boron (NdFeB) magnet having gradient coercive force and its preparation method are disclosed. The NdFeB magnet includes at least two NdFeB material layers having different coercive force, including an exterior layer having high coercive force and at least a medial layer having low coercive force. The exterior layer is connected to the medial layer via a sintered layer along an orientation direction. The NdFeB magnet has high magnetic properties and high resistance to magnetism loss. | 04-18-2013 |
20130113586 | ARTICLE MADE OF AN INJECTED MATERIAL WITH A BUILT-IN MAGNET AND THE MANUFACTURING METHOD - An article for use in various industries including for manufacturing toys, promotional articles, and decorative articles using plastic includes a body ( | 05-09-2013 |
20130135068 | MAGNETIC ASSEMBLY - A magnetic assembly contains a magnetic member including two end portions with two different magnetic poles respectively and a groove fixed thereon in an axial direction, an exterior of the magnetic member and an exterior of the groove having magnetic fields surrounding therearound in different directions individually; a magnet guiding member with a magnetic permeability including a plate to contact with one end of the magnetic member, and the plate including a post extending outward therefrom to be fitted into the groove of the magnet guiding member. | 05-30-2013 |
20130135069 | PERMANENT MAGNET AND METHOD OF PRODUCING PERMANENT MAGNET - A permanent magnet has a grain structure that includes a main phase and a grain boundary phase that is primarily composed of a first metal. A second metal that enhances the coercivity of the permanent magnet and a third metal that has a lower standard free energy of oxide formation than the first metal and the second metal are diffused in the permanent magnet, and the third metal is present in the form of an oxide in the grain boundary phase. | 05-30-2013 |
20130135070 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of boosting productivity by improving thickness accuracy of a green sheet. In the method, magnet material is milled into magnet powder, and the magnet powder and a binder are mixed to obtain a mixture including 1 to 40 wt % of the binder therein. Next, by high precision coating of a substrate with the mixture, a green sheet is obtained at thickness precision within a margin of error of plus or minus 5% with reference to a designed value. Thereafter, the green sheet is held for predetermined time at binder decomposition temperature in non-oxidizing atmosphere, whereby depolymerization reaction or the like changes the binder into monomer and thus removes the binder. The green sheet with the binder removed therefrom undergoes pressure sintering such as SPS method so as to obtain a permanent magnet | 05-30-2013 |
20130141194 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of simplifying manufacturing process and improving productivity through advanced ability to produce net shapes. In the method, magnet material is milled into magnet powder, and the magnet powder and a binder are mixed to prepare a mixture. Next, the prepared mixture is formed into a green sheet. Thereafter, the green sheet is held for predetermined time at binder decomposition temperature in non-oxidizing atmosphere, whereby depolymerization reaction or the like changes the binder into monomer and thus removes the binder. The green sheet with the binder removed therefrom undergoes pressure sintering such as SPS method so as to obtain a rare-earth permanent magnet | 06-06-2013 |
20130141195 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder. Next, a mixture is prepared by mixing the magnet powder and a binder made of a fatty acid methyl ester and/or one of or a blend of polymers and copolymers each composed of monomers satisfying a given condition. Next, the mixture is formed into a sheet-like shape to obtain a green sheet. After that, the green sheet is held for a predetermined length of time at binder decomposition temperature in a non-oxidizing atmosphere so as to remove the binder by causing depolymerization reaction or the like to the binder, which turns into monomer. The green sheet from which the binder has been removed is sintered by raising temperature up to sintering temperature. Thereby a permanent magnet | 06-06-2013 |
20130141196 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of achieving improvement of magnetic properties by optimizing magnetic field orientation. In the method, magnet material is milled into magnet powder. Next, the magnet powder and a binder are mixed to obtain a mixture. Next, the thus prepared mixture is formed into long-sheet-like shape so as to obtain a green sheet | 06-06-2013 |
20130141197 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method of the rare-earth permanent magnet capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder, and the magnet powder is mixed with a binder made of a hydrocarbon to prepare slurry | 06-06-2013 |
20130154778 | Low-neodymium, non-heavy-rare-earth and high performance magnet and preparation method - The invention discloses a low-neodymium, non-heavy-rare-earth and high-performance magnet and its preparing method, and belongs to technical field of rare earth permanent magnetic material. The magnet has a chemical formula of [(Nd, Pr) | 06-20-2013 |
20130169394 | NdFeB Sintered Magnet and Method for Producing the Same - A method for producing an NdFeB sintered includes forming a layer containing Dy and/or Tb on the surface of an NdFeB sintered magnet base material and then performing a grain boundary diffusion process for diffusing Dy and/or Tb from the aforementioned layer through the crystal grain boundaries of the magnet base material into the magnet base material by heating the magnet base material to a temperature equal to or lower than the sintering temperature thereof. In this method: a) the content of a rare earth in a metallic state in the magnet base material is equal to or higher than 12.7 at %; b) the aforementioned layer is a powder layer formed by depositing a powder; and c) the powder layer contains Dy and/or Tb in a metallic state by an amount equal to or higher than 50 mass %. | 07-04-2013 |
20130169395 | CYLINDRICAL BONDED MAGNET STRUCTURE - The structure includes cylindrical columnar and tubular bonded magnets. The columnar magnet has at least one pair of N and S poles that are alternately produced in the longitudinal direction. The tubular magnet surrounds the columnar magnet, and has at least one pair of N and S poles that are alternately produced in the longitudinal direction. Poles of the columnar and tubular magnets that are opposed to each other in the direction perpendicular to the axis of the columnar magnet as the propulsion force direction are of opposite magnetic polarity so that magnetic fields are produced in the direction perpendicular to the propulsion force direction. The surface magnetic flux density profile balance can be smoothed by adjusting higher and lower parts of the profiles of the columnar and tubular magnets. | 07-04-2013 |
20130194058 | BACK SAVER - The invention disclosed here relates in general to a field of devices used to eliminate stress and strain to the body caused due to excessive bending and/or stooping. | 08-01-2013 |
20130207759 | STRING-SHAPED MAGNET - Provided is a string-shaped magnet in which first magnetic parts | 08-15-2013 |
20130207760 | MULTIPOLE MAGNET - A multipole magnet for deflecting a beam of charged particles, comprising: a plurality of ferromagnetic poles arranged in a pole plane; a plurality of permanent magnets each having a magnetisation direction, and each being arranged to supply magnetomotive force to the plurality of ferromagnetic poles to produce a magnetic field along the pole plane in a beamline space between the poles; and a plurality of ferromagnetic flux conducting members arranged to channel magnetic flux from at least one of the plurality of permanent magnets; wherein the multipole magnet comprises an even number of ferromagnetic poles, each pole being arranged to diametrically oppose another of the poles in the pole plane along a pole axis, wherein each of the plurality of permanent magnets is associated with at least one of the plurality of poles and the magnetisation direction of each permanent magnet isorientated in the pole plane at an angle of at least 45° relative to the pole axis of the associated pole. | 08-15-2013 |
20130222093 | METHOD OF MANUFACTURING MAGNET, AND MAGNET - A hard magnetic material formed of material powders made of a R—Fe—N compound containing a light rare earth element as R, or material powders made of a Fe—N compound is used as material powders. There is formed a compact in which a density of the hard magnetic material powders differs between an outer face side portion and an inside portion of the compact such that a rate of progress of powder bonding due to microwave heating is higher in the inside portion of the compact than in the outer face side portion of the compact when an outer face of the compact is irradiated with microwaves. Then, the outer face of the compact is irradiated with the microwaves to cause the microwave heating, thereby bonding the hard magnetic material powders by oxide films which are formed on the hard magnetic material powders. | 08-29-2013 |
20130222094 | METHOD OF MANUFACTURING MAGNET AND MAGNET - Material powders made of a R—Fe—N compound that contains a light rare earth element as R or material powders made of a Fe—N compound are formed into a compact having a predetermined shape through compression forming. Then, the compact formed of the material powders is heated in an oxidative atmosphere to bond the material powders to each other by oxide films formed on the material powders. | 08-29-2013 |
20130241681 | PERMANENT MAGNET, AND MOTOR AND POWER GENERATOR USING THE SAME - In one embodiment, a permanent magnet includes a composition expressed by R | 09-19-2013 |
20130241682 | PERMANENT MAGNET, AND MOTOR AND POWER GENERATOR USING THE SAME - In one embodiment, a permanent magnet includes: a composition expressed by R | 09-19-2013 |
20130257572 | DEVELOPING BULK EXCHANGE SPRING MAGNETS - A method of making a bulk exchange spring magnet by providing a magnetically soft material, providing a hard magnetic material, and producing a composite of said magnetically soft material and said hard magnetic material to make the bulk exchange spring magnet. The step of producing a composite of magnetically soft material and hard magnetic material is accomplished by electrophoretic deposition of the magnetically soft material and the hard magnetic material to make the bulk exchange spring magnet. | 10-03-2013 |
20130257573 | FERROMAGNETIC PARTICLES AND PROCESS FOR PRODUCING THE SAME, ANISOTROPIC MAGNET AND BONDED MAGNET - The present invention relates to ferromagnetic particles comprising an Fe | 10-03-2013 |
20130265127 | SOFT MAGNETIC ALLOY POWDER, COMPACT, POWDER MAGNETIC CORE, AND MAGNETIC ELEMENT - Provided are a soft magnetic alloy powder, a compact made from the soft magnetic alloy powder, a powder magnetic core including the compact, and a magnetic element including the powder magnetic core. The soft magnetic alloy powder contains Fe—Ni-based particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe. The Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm. | 10-10-2013 |
20130265128 | R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B- BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET - R-T-B-based rare earth magnet particles are produced by an HDDR treatment which comprises a first stage HD step of heating particles of a raw material alloy having a composition of R, B and Co in an inert atmosphere or in a vacuum atmosphere and then replacing the atmosphere with a hydrogen-containing gas atmosphere in which the raw material alloy particles are held in the same temperature range and a second stage HD step of heating a material obtained in the first stage HD step in which the material is held in the hydrogen-containing gas atmosphere. | 10-10-2013 |
20130271248 | RARE EARTH SINTERED MAGNET AND MAKING METHOD - A rare earth sintered magnet as an anisotropic sintered body comprising Nd | 10-17-2013 |
20130271249 | MAGNETIC BODY - A magnetic body which can reversibly change its magnetic force with a small external magnetic field while having a high residual magnetic flux density is provided. The magnetic body of the present invention has a residual magnetic flux density Br of at least 11 kG and a coercive force HcJ of 5 kOe or less, while an external magnetic field required for the residual magnetic flux density Br to become 0 is 1.10 HcJ or less. | 10-17-2013 |
20130278367 | ARCUATE MAGNET HAVING POLAR-ANISOTROPIC ORIENTATION, AND METHOD AND MOLDING DIE FOR PRODUCING IT - A die apparatus for molding an arcuate magnet having polar-anisotropic orientation in a magnetic field, which comprises a die made of non-magnetic cemented carbide, which is arranged in a parallel magnetic field generated by a pair of opposing magnetic field coils; an arcuate-cross-sectional cavity having an inner arcuate wall, an outer arcuate wall and two side walls, which is disposed in the die; a central ferromagnetic body arranged on the side of the outer arcuate wall of the cavity; and a pair of side ferromagnetic bodies symmetrically arranged on both side wall sides of the cavity; the cavity being arranged such that its radial direction at a circumferential center thereof is identical with the direction of the parallel magnetic field; the width of the central ferromagnetic body being smaller than the width of the cavity in a direction perpendicular to the parallel magnetic field; and a pair of the side ferromagnetic bodies being arranged such that the cavity is positioned in a region sandwiched by a pair of the side ferromagnetic bodies. | 10-24-2013 |
20130285778 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method thereof capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder. Next, a mixture is prepared by mixing the magnet powder and a binder made of long-chain hydrocarbon and/or of a polymer or a copolymer consisting of monomers having no oxygen atoms. Next, the mixture is formed into a sheet-like shape so as to obtain a green sheet. After that, the green sheet is held for a predetermined length of time at binder decomposition temperature in a non-oxidizing atmosphere so as to remove the binder by causing depolymerization reaction or the like to the binder, which turns into monomer. The green sheet from which the binder has been removed is sintered by raising temperature up to sintering temperature. Thereby a permanent magnet | 10-31-2013 |
20130285779 | SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD - A sintered ferrite magnet having a main phase composed of ferrite having a hexagonal, M-type magnetoplumbite structure, a grain boundary phase containing Si and Ca with a lower atomic ratio of La than in said main phase, and a third phase containing La at a higher atomic ratio than in said main phase, and a method for producing a sintered ferrite magnet having said third phase by calcining starting materials with more La than Ca, adding more than 1% and 1.8% or less by mass of SiO | 10-31-2013 |
20130293328 | R-T-B SINTERED MAGNET - This sintered R-T-B based rare-earth magnet includes: R | 11-07-2013 |
20130307653 | MAGNETOPLUMBITE-TYPE FERRITE MAGNETIC MATERIAL AND SEGMENT-TYPE PERMANENT MAGNET DERIVED THEREFROM - A ferrite magnetic material comprising a primary phase of a magnetoplumbite-type hexagonal ferrite, the primary phase having a composition represented by formula (I), can provide improved magnetic properties in terms of the residual magnetic flux density (Br), intrinsic coercive force (iHc), squareness (Hk/iHc), and maximum energy product (B.Hmax). Therefore, a segment-type permanent magnet derived therefrom can be used in the manufacture of small type motors for automobiles, motors for electric equipments as well as for home appliances, and other devices. | 11-21-2013 |
20130321112 | METHOD PRODUCING RARE EARTH MAGNET - A method of producing an R-T-B rare earth magnet that include forming an R-T-B (R: rare-earth element, T: Fe, or Fe and partially Co that substitutes for part of Fe) rare earth alloy powder into a compact and performing hot working on the compact, wherein the hot working is performed in a direction that is different from the direction in which the forming was performed. | 12-05-2013 |
20130335179 | HIGH-CORROSION RESISTANT SINTERED NDFEB MAGNET AND PREPARATION METHOD THEREFOR - High corrosion resistant sintered NdFeB magnets are provided with a composition by mass % of Nd | 12-19-2013 |
20130335180 | RARE EARTH MAGNET AND PROCESS FOR PRODUCING SAME - A process for producing a rare earth magnet comprises: an adhesion step of causing a diffusion element capable of diffusing inwardly to adhere to the surface part of a magnet material comprising a compact or sintered body of rare earth alloy particles; and an evaporation step of heating the magnet material in vacuum to evaporate at least a portion of the diffusion element having been retained on or in the surface part of the magnet material. | 12-19-2013 |
20130342298 | METHOD OF MANUFACTURING MAGNET AND MAGNET - A method of manufacturing a magnet from material powders made of a R—Fe—N compound that contains a rare earth element as R or material powders made of a Fe—N compound, includes: an oxide film bonding step in which a compact is formed by bonding the material powders to each other by oxide films formed on surfaces of the material powders; and a coating step in which a surface of the compact is covered with a coating film. | 12-26-2013 |
20140002220 | NANOCOMPOSITE PERMANENT MAGNETS AND METHODS OF MAKING THE SAME | 01-02-2014 |
20140043125 | METHOD FOR PRODUCING FULLY DENSE RARE EARTH-IRON-BASED BONDED MAGNET - Provided is a method for producing a fully dense rare earth-iron-based bonded magnet, the method comprising: kneading a non-tacky thermosetting resin composition with rare earth-iron-based magnet flakes to produce a solid granular composite magnetic material; filling the granular composite magnetic material into a cavity, applying a uniaxial pressure higher than or equal to the yield stress of the thermosetting resin composition to the granular composite magnetic material so as to produce a green compact in which voids are reduced as a result of an interaction between brittle fracture of the magnet flakes and plastic deformation of the thermosetting resin composition, the rare earth-iron-based magnet flakes are piled on top of one another highly compact in the direction of the pressure axis, and the mutual positional relations of the magnet flakes are set almost regularly; and heating the green compact to cure the thermosetting resin composition constituting the green compact. | 02-13-2014 |
20140062630 | PERMANENT MAGNET AND METHOD FOR MANUFACTURING THE SAME, AND MOTOR AND POWER GENERATOR USING THE SAME - According to one embodiment, a permanent magnet is provided with a sintered body having a composition represented by R(Fe | 03-06-2014 |
20140062631 | NdFeB SYSTEM SINTERED MAGNET - A NdFeB system sintered magnet produced by the grain boundary diffusion method and has a high coercive force and squareness ratio with only a small decrease in the maximum energy product. A NdFeB system sintered magnet having a base material produced by orienting powder of a NdFeB system alloy and sintering the powder, with Dy and/or Tb (the “Dy and/or Tb” is hereinafter called R | 03-06-2014 |
20140062632 | NdFeB SYSTEM SINTERED MAGNET - A NdFeB system sintered magnet produced by the grain boundary diffusion method that has a high coercive force and squareness ratio with only a small decrease in the maximum energy product. The NdFeB system sintered magnet has a base material produced by orienting powder of a NdFeB system alloy and sintering the powder, with Dy and/or Tb (the “Dy and/or Tb” is hereinafter called R | 03-06-2014 |
20140085022 | Synthesis of Magnetic Composites - The present disclosure relates to a method for producing magnetic composites, comprising the electrophoretic deposition of hard-magnetic particles and soft-magnetic particles from a suspension onto an electrode, as well as the composite produced by means of the method and the use thereof for producing permanent magnets. | 03-27-2014 |
20140085023 | PROCESS FOR PRODUCING FERROMAGNETIC PARTICLES, ANISOTROPIC MAGNET, BONDED MAGNET AND COMPACTED MAGNET - The present invention relates to ferromagnetic particles capable of exhibiting a high purity and excellent magnetic properties from the industrial viewpoints and a process for producing the ferromagnetic particles, and also provides an anisotropic magnet, a bonded magnet and a compacted magnet which are obtained by using the ferromagnetic particles. The ferromagnetic particles comprising an Fe | 03-27-2014 |
20140118098 | NDFEB SYSTEM SINTERED MAGNET - A NdFeB system sintered magnet according to the present invention is a NdFeB system sintered magnet having a base material produced by orienting powder of a NdFeB system alloy and sintering the powder, with Dy and/or Tb (the “Dy and/or Tb” is hereinafter called R | 05-01-2014 |
20140132376 | NANOSTRUCTURED HIGH-STRENGTH PERMANENT MAGNETS - Materials, techniques, systems, and devices are disclosed for fabricating and implementing high-strength permanent magnets. In one aspect, a method of fabricating a magnet includes distributing particles of a first magnetic material such that the particles are substantially separated, in which the particles include a surface substantially free of oxygen. The method includes forming a coating of a second magnetic material over each of the particles, in which the coating forms an interface at the surface that facilitates magnetic exchange coupling between the first and second magnetic materials. The method includes consolidating the coated particles to produce a magnet that is magnetically stronger than each of the first and second magnetic materials. | 05-15-2014 |
20140132377 | ALLOY FOR R-T-B-BASED RARE EARTH SINTERED MAGNET, PROCESS OF PRODUCING ALLOY FOR R-T-B-BASED RARE EARTH SINTERED MAGNET, ALLOY MATERIAL FOR R-T-B-BASED RARE EARTH SINTERED MAGNET, R-T-B-BASED RARE EARTH SINTERED MAGNET, PROCESS OF PRODUCING R-T-B-BASED RARE EARTH SINTERED MAGNET, AND MOTOR - An alloy for R-T-B-based rare earth sintered magnets which contains R which is a rare earth element; T which is a transition metal essentially containing Fe; a metallic element M containing one or more metals selected from Al, Ga and Cu; B and inevitable impurities, in which R accounts for 13 at % to 15 at %, B accounts for 4.5 at % to 6.2 at %, M accounts for 0.1 at % to 2.4 at %, T accounts for balance, a proportion of Dy in all rare earth elements is in a range of 0 at % to 65 at %, and the following Formula 1 is satisfied, | 05-15-2014 |
20140139304 | Self-Healing Corrosion Protection Coatings for Nd-Fe-B Magnets - A neodymium magnet (Nd—Fe—B) is protected by a self-healing, corrosion-resistant coating of (a) a sacrificial metal layer; (b) optionally, a metal pretreatment layer on the sacrificial metal layer; and (c) an electrocoat coating layer. | 05-22-2014 |
20140139305 | PERMANENT MAGNET, AND MOTOR AND POWER GENERATOR USING THE SAME - In one embodiment, a permanent magnet includes a sintered compact having a composition expressed by a composition formula: R | 05-22-2014 |
20140145807 | MAGNETIC SHEET OF CONTACTLESS POWER TRANSMISSION DEVICE - There are provided a magnetic sheet and a contactless power transmission device including the same. The magnetic sheet includes a ferrite sheet, a metal sheet formed on the ferrite sheet and including a polymer resin and a metal powder, and an adhesive film inserted between the ferrite sheet and the metal sheet. | 05-29-2014 |
20140145808 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method of a rare-earth permanent magnet capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder. Next, a mixture | 05-29-2014 |
20140152408 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method of a rare-earth permanent magnet capable of improving magnetic properties with drastically enhanced manufacturing efficiency. In the method, magnet material is milled into magnet powder. Next, the magnet powder and a binder are mixed to obtain a mixture | 06-05-2014 |
20140159842 | APPARATUS FOR RAPIDLY SOLIDIFYING LIQUID IN MAGNETIC FIELD AND ANISOTROPIC RARE EARTH PERMANENT MAGNET - An apparatus for solidifying liquid in a magnetic field includes a magnetic circuit applying the magnetic field greater than or equal to about 1 tesla to a solidified part. | 06-12-2014 |
20140167895 | METHOD OF MANUFACTURING AN Nd BASED SINTERED MAGNET - A sintered Nd base magnet segment has a coercive force high at the periphery and lower toward the inside. A method for preparing the magnet includes the steps of: (a) providing a sintered Nd base magnet block having surfaces and a magnetization direction, (b) coating the surfaces of the magnet block excluding the surface perpendicular to the magnetization direction with a Dy or Tb oxide powder, a Dy or Tb fluoride powder, or a Dy or Tb-containing alloy powder, (c) treating the coated block at a high temperature for causing Dy or Tb to diffuse into the block, and (d) cutting the block in a plane perpendicular to the magnetization direction into a magnet segment having a coercive force distribution on the cut section that the coercive force is high at the periphery and lower toward the inside and a constant coercive force distribution in the magnetization direction. | 06-19-2014 |
20140184370 | SINTERED RARE EARTH MAGNET, METHOD OF PRODUCING THE SAME, AND ROTATING MACHINE - A sintered rare earth magnet rotating machine and method improve temperature properties and strength having an excellent corrosion resistance. The sintered rare earth magnet includes at least a main phase composed of R | 07-03-2014 |
20140191831 | R-T-B RARE EARTH SINTERED MAGNET, ALLOY FOR R-T-B RARE EARTH SINTERED MAGNET, AND METHOD OF MANUFACTURING THE SAME - An R-T-B rare earth sintered magnet contains R which represents a rare earth element; T which represents a transition metal essentially containing Fe; a metal element M which represents Al and/or Ga; B; Cu; and inevitable impurities the R-T-B rare earth sintered magnet including 13.4 to 17 at % of R, 4.5 to 5.5 at % of B, and 0.1 to 2.0 at % of M, and T as the balance; in which the R-T-B rare earth sintered magnet is formed of a sintered body which includes a main phase composed of R | 07-10-2014 |
20140191832 | PRIMARY ULTRAFINE-CRYSTALLINE ALLOY RIBBON AND ITS CUTTING METHOD, AND NANO-CRYSTALLINE, SOFT MAGNETIC ALLOY RIBBON AND MAGNETIC DEVICE USING IT - A method for cutting a primary ultrafine-crystalline alloy ribbon having a structure in which ultrafine crystal grains having an average grain size of 30 nm or less are dispersed in a proportion of 5-30% by volume in an amorphous matrix, comprising placing the ribbon on a soft base deformable to an acute angle by local pressing, bringing a cutter blade into horizontal contact with a surface of the ribbon, and pressing the cutter to the ribbon to apply uniform pressure thereto, thereby bending the ribbon along a cutter blade edge to brittly fracture-cut the ribbon. | 07-10-2014 |
20140191833 | METHOD FOR PRODUCING RARE EARTH MAGNETS, AND RARE EARTH MAGNETS - A method for producing a nanocrystalline rare earth magnet having a grain and a grain boundary phase includes: quenching a melt of a rare earth magnet composition to form a quenched thin ribbon having a nanocrystalline structure; sintering the quenched thin ribbon to obtain a sintered body; heat treating the sintered body at a temperature which is higher than a lowest temperature in a first temperature range where the grain boundary phase diffuses or flows, and which is lower than a lowest temperature in a second temperature range where the grain becomes coarse; and quenching the heat treated sintered body to 200° C. or less at a cooling speed of 50° C./min or more. | 07-10-2014 |
20140197911 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet and a manufacturing method of a rare-earth permanent magnet capable of improving magnetic properties by optimizing magnetic field orientation. In the method, magnet material is milled into magnet powder. Next, the magnet powder and a binder are mixed to obtain a mixture | 07-17-2014 |
20140210579 | MAGNET ASSEMBLY - A magnet assembly, having a disk-shaped magnet, which is made predominantly of metal material and has a through-hole and, by the through-hole, can be placed onto a region of a shaft made of plastic by a press fit. In the region of the magnet placed onto the shaft, the shaft has a diameter that is smaller than the diameter of the through-hole. The shaft has a plurality of radially protruding projections in the region of the magnet placed onto the shaft. The projections are distributed evenly on the circumference of the shaft and, with respect to the longitudinal axis of the shaft, having a radius, the double of which is oversized relative to the diameter of the through-hole before the magnet is placed onto the projections of the shaft. | 07-31-2014 |
20140210580 | R-T-B-M-C Sintered Magnet And Production Method And An Apparatus For Manufacturing The R-T-B-M-C Sintered Magnet - The present invention discloses an R-T-B-M-C sintered magnet and a method for manufacturing the R-T-B-M-C sintered magnet from an R-T-B-M-C alloy powder including the lubricant. The present invention also discloses an apparatus for manufacturing the R-T-B-M-C sintered magnet from the R-T-B-M-C alloy powder including the lubricant. The apparatus includes an alloy powder feeding mechanism for distributing the R-T-B-M-C alloy powder including the lubricant, a filling mechanism including a mold for receiving the R-T-B-M-C alloy powder including the lubricant, a press mechanism for compressing the R-T-B-M-C alloy powder including the lubricant and a stacking mechanism for storing the mold including the R-T-B-M-C alloy powder including the lubricant. | 07-31-2014 |
20140210581 | RARE EARTH-FREE PERMANENT MAGNETIC MATERIAL - The invention provides rare earth-free permanent magnetic materials and methods of making them. The materials can be used to produce magnetic structures for use in a wide variety of commercial applications, such as motors, generators, and other electromechanical and electronic devices. Magnets fabricated using the materials can be substituted for magnets requiring rare earth elements that are costly and in limited supply. The invention provides two different types of magnetic materials. The first type is based on an iron-nickel alloy that is doped with one or more doping elements to promote the formation of L1 | 07-31-2014 |
20140210582 | RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet based on Nd—Fe—B, capable of improving coercive force through reducing a residual nitrogen concentration after sintering to be 800 ppm or lower, and a manufacturing method of the rare-earth permanent magnet. The rare-earth permanent magnet based on Nd—Fe—B is obtained through milling a magnet material in an atmosphere of a noble gas by dry milling, and thereafter, compacting the milled magnet material into a formed body in an atmosphere of a noble gas. The formed body is then sintered at 800 through 1180 degrees Celsius so as to obtain a permanent magnet 1 whose nitrogen concentration is 800 ppm or lower, or more preferably 300 ppm or lower. | 07-31-2014 |
20140247100 | R-T-B SINTERED MAGNET AND METHOD FOR PRODUCTION THEREOF, AND ROTARY MACHINE - An R-T-B sintered magnet | 09-04-2014 |
20140266524 | METHOD FOR PRODUCING BI-POLAR COMPLEMENTARY STRUCTURE PATTERNS - The embodiments disclose a method including creating at least one first structure including magnetically isolated features in servo fields, and creating at least one second structure including finger-structure patterns including intentional weak nucleation points in servo fields to create a regular bi-polar magnetization direction after bulk DC initialization, and wherein the first and second structures form bi-polar complementary structure patterns. | 09-18-2014 |
20140266525 | R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET - An object of the present invention is to enhance a coercive force of magnetic particles by promoting formation of a continuous R-rich grain boundary phase in a crystal grain boundary of a magnetic phase of the particles, and to thereby obtain R-T-B-based rare earth magnet particles further having a high residual magnetic flux density. The present invention relates to production of R-T-B-based rare earth magnet particles capable of exhibiting a high coercive force even when a content of Al therein is reduced, and a high residual magnetic flux density, in which formation of an R-rich grain boundary phase therein can be promoted by heat-treating Al-containing R-T-B-based rare earth magnet particles obtained by HDDR treatment in vacuum or in an Ar atmosphere at a temperature of not lower than 670° C. and not higher than 820° C. for a period of not less than 30 min and not more than 300 min. | 09-18-2014 |
20140285296 | POWER GENERATION DEVICE - A power generation device includes a first magnet member, a second magnet member which is disposed such that the N pole side thereof is in the opposite direction to the N pole side of the first magnet member, a yoke which is disposed between the first magnet member and the second magnet member, an induction coil which is disposed at an outer periphery of the yoke. When the first magnet member and the second magnet member slidingly move in synchronization or when the yoke slidingly moves, the direction of a magnetic flux flowing in the yoke changes to generate an electromotive force in the induction coil. | 09-25-2014 |
20140292453 | RARE EARTH BASED MAGNET - The present invention provides a rare earth based magnet that inhibits the high temperature demagnetization rate even when less or no heavy rare earth elements such as Dy, Tb and the like are used. The rare earth based magnet according to the present invention includes R | 10-02-2014 |
20140292454 | RARE EARTH BASED MAGNET - The present invention provides a rare earth based magnet having a microstructure in which in a section of the R | 10-02-2014 |
20140320243 | R-T-B BASED PERMANENT MAGNET - The present invention provides a permanent magnet whose magnetic properties will not be significantly decreased and which is excellent in the temperature properties compared to the existing R-T-B based permanent magnet. In the R-T-B based structure, a stack structure of R1-T-B based crystallizing layer and (Y,Ce)-T-B based crystallizing layer can be formed by alternatively stacking R1-T-B and (Y,Ce)-T-B. In this way, a high magnetic anisotropy field of the R1-T-B based crystallizing layer can be maintained while an improved temperature coefficient of the (Y,Ce)-T-B based crystallizing layer can be obtained. Further, a high coercivity can be obtained by adding the Ce-T-B based crystallizing layer with a low lattice distortion to the Y-T-B based crystallizing layer. | 10-30-2014 |
20140320244 | R-T-B BASED PERMANENT MAGNET - The present invention provides a permanent magnet whose magnetic properties will not be significantly decreased and which is excellent in the temperature properties compared to the existing R-T-B based permanent magnet. In the R-T-B based structure, a stacked structure of R1-T-B based crystallizing layer and (Y, La)-T-B based crystallizing layer can be formed by alternatively stacking R1-T-B and (Y, La)-T-B. In this way, a high magnetic anisotropy field of the R1-T-B based crystallizing layer can be maintained while an improved temperature coefficient of the (Y, La)-T-B based crystallizing layer can be obtained. Further, the lattice distortion in the total stacked structure is moderated by setting the rare earth elements in the (Y, La)-T-B based crystallizing layer as both of Y and La, and a high residual flux density can be obtained accordingly. | 10-30-2014 |
20140320245 | R-T-B BASED PERMANENT MAGNET - The present invention provides such a permanent magnet that its magnetic properties will not significantly decrease and it can be prepared at a lower temperature, compared to conventional R-T-B based permanent magnets. In the R-T-B based structure, a stacked structure of R1-T-B based crystal layer and Ce-T-B based crystal layer can be formed by alternatively stacking the R1-T-B based crystal layer and the Ce-T-B based crystal layer. In this way, a high magnetic anisotropy field of the R1-T-B based crystal layer can be maintained while the crystallization temperature can be lowered by the Ce-T-B based crystal layer. | 10-30-2014 |
20140320246 | R-T-B BASED PERMANENT MAGNET - The present invention provides a permanent magnet which is excellent in the temperature properties and the magnetic properties of which will not be significantly decreased, compared to the conventional R-T-B based permanent magnet. In the R-T-B based structure, a stacked structure of R1-T-B based crystal layer and Y-T-B based crystal layer can be formed by alternatively stacking R1-T-B and Y-T-B. In this way, a high magnetic anisotropy field of the R1-T-B based crystal layer can be maintained while the temperature coefficient of the Y-T-B based crystal layer can be improved. | 10-30-2014 |
20140327503 | NDFEB SYSTEM SINTERED MAGNET AND METHOD FOR PRODUCING THE SAME - Provided is a NdFeB sintered magnet which can be used in the grain boundary diffusion method as a base material in which R | 11-06-2014 |
20140375404 | METHOD FOR PRODUCING R-T-B SINTERED MAGNET - A method for producing a sintered R-T-B based magnet according to the present application includes the steps of: providing a sintered R-T-B based magnet body, of which the R mole fraction that is defined by the content of a rare-earth element falls within the range of 31 mass % to 37 mass %; providing an RH diffusion source including a heavy rare-earth element RH (which is at least one of Dy and Tb) and 30 mass % to 80 mass % of Fe; loading the sintered magnet body and the RH diffusion source into a processing chamber so that the magnet body and the diffusion source are movable relative to each other and readily brought close to, or in contact with, each other; and performing an RH diffusion process by conducting a heat treatment on the sintered magnet body and the RH diffusion source at a process temperature of 700° C. to 1000° C. while moving the sintered magnet body and the RH diffusion source either continuously or discontinuously in the processing chamber. | 12-25-2014 |
20150008998 | RARE-EARTH NANOCOMPOSITE MAGNET - The invention provides a nanocomposite magnet, which has achieved high coercive force and high residual magnetization. The magnet is a non-ferromagnetic phase that is intercalated between a hard magnetic phase with a rare-earth magnet composition and a soft magnetic phase, wherein the non-ferromagnetic phase reacts with neither the hard nor soft magnetic phase. A hard magnetic phase contains Nd | 01-08-2015 |
20150028976 | Rare-Earth Magnet - The purpose of the present invention is to provide a structure of a rare-earth magnet having high coercivity. In order to solve the problem, a rare-earth magnet according to the present invention comprises sheets of elements bonded with each other through a covalent bond | 01-29-2015 |
20150042430 | System and Method for Tailoring Polarity Transitions of Magnetic Structures - A system and method for tailoring a polarity transition of a magnetic structure is provided that involves printing one or more reinforcing maxels alongside one side or both sides of a polarity transition boundary between a first polarity region of the magnetic structure having a first polarity and a second polarity region of the magnetic structure having a second polarity, where printing reinforcing maxels alongside the polarity transition boundary improves the magnetic field characteristics of the polarity transition. | 02-12-2015 |
20150084727 | RARE-EARTH PERMANENT MAGNET, METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET AND SYSTEM FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET - There are provided a rare-earth permanent magnet, and a method for manufacturing a rare-earth permanent magnet and a system for manufacturing a rare-earth permanent magnet, capable of achieving improved shape uniformity. Magnet material is milled into magnet powder, and the milled magnet powder is formed into a formed body | 03-26-2015 |
20150302961 | FABRICATION METHOD OF RARE EARTH-BASED SINTERED MAGNET - Provided is a fabrication method of a rare earth-based sintered magnet including: a) a first doping step of mixing and sintering a first doping material including a first heavy rare earth compound with a rare earth-based magnet raw material powder to fabricate a first doped sintered body; and b) a second doping step of forming a coating layer of a second doping material including a second heavy rare earth compound on a surface of the first doped sintered body and performing a heat-treatment to fabricate a second doped sintered body. | 10-22-2015 |
20150318089 | RARE-EARTH PERMANENT MAGNETIC POWDER, BONDED MAGNET CONTAINING THEREOF AND DEVICE USING THE BONDED MAGNET - A rare-earth permanent magnetic powder, a bonded magnet containing thereof and a device using the bonded magnet are provided of the present disclosure. The rare-earth permanent magnetic powder comprises: 70 vol % to 99 vol % of a hard magnetic phase and 1 vol % to 30 vol % of a soft magnetic phase, the hard magnetic phase has a TbCu | 11-05-2015 |
20150323627 | MAGNETIC SHIMMING AND MAGNET ARRANGEMENTS - A passive magnetic field shim arrangement including a plurality of shim pairs. For shimming a number of magnetic field harmonics, each shim pair may include a first shim and a second opposite and substantially equal shim, each shim pair being configured for shimming one of the magnetic field harmonics. Each shim pair may include a first shim of order N and a second opposite and substantially equal shim of order N, the first and second shims together defining a magnetic field shim correction of order N−1. Each shim may include one or more shim elements arranged on a non-magnetic tubular support, the tubular supports being dimensioned such that the tubular supports may be arranged concentrically in relation to each other. A magnetic field may be shimmed by providing a shim pair configured for shimming a magnetic field harmonic, the shim pair including a first shim and a second opposite and substantially equal shim and symmetrically adjusting an axial position of the first shim and an axial position of the second shim to provide a desired shimming magnitude in order to shim the magnetic field harmonic. | 11-12-2015 |
20150325349 | HIGH PERFORMANCE PERMANENT MAGNET BASED ON MnBi AND METHOD TO MANUFACTURE SUCH A MAGNET - The invention refers to a method for manufacturing a at least 90% relative density of MnBi comprising permanent magnet ( | 11-12-2015 |
20150332819 | METHOD FOR PRODUCING SINTERED FERRIT MAGNET, AND SINTERED FERRITE MAGNET - A sintered ferrite magnet comprising (a) a ferrite phase having a hexagonal M-type magnetoplumbite structure comprising Ca, an element R which is at least one of rare earth elements and indispensably includes La, an element A which is Ba and/or Sr, Fe, and Co as indispensable elements, the composition of metal elements of Ca, R, A, Fe and Co being represented by the general formula of Ca | 11-19-2015 |
20150340145 | MAGNETIC DEVICE COMPRISING AN ACCELERATION UNIT ACTING ON THE TRANSLATOR - A magnetic device comprising at least one stator ( | 11-26-2015 |
20150380134 | RARE EARTH-COBALT PERMANENT MAGNET - There is provided a rare earth-cobalt permanent magnet containing 23 to 27 wt % R, 3.5 to 5 wt % Cu, 18 to 25 wt % Fe, 1.5 to 3 wt % Zr, and a remainder Co with inevitable impurities, where an element R is a rare earth element at least containing Sm. It has a metal structure including a cell phase ( | 12-31-2015 |
20160005537 | Process for Treating a Magnetic Structure - Process for treating a magnetic structure, wherein it comprises the following steps: providing a magnetic structure comprising one first layer of magnetic material comprising a CoFeB alloy; irradiating the magnetic structure with light low-energy ions; and simultaneously holding the magnetic structure with a preset temperature profile and for a preset time. | 01-07-2016 |
20160042847 | R-T-B BASED SINTERED MAGNET - To provide an R-T-B based sintered magnet having high B | 02-11-2016 |
20160086704 | METHOD OF MANUFACTURING ANISOTROPIC HOT-DEFORMED MAGNET USING HOT-DEFORMATION PROCESS AND HOT-DEFORMED MAGNET MANUFACTURED THEREBY - The method for fabricating an R—Fe—B hot-deformed magnet according to the present invention includes: preparing an R—Fe—B magnetic powder; mixing the magnetic powder with a high-melting point metal or a metal compound including the high-melting point metal; press sintering the mixture; and hot-deforming the sintered body by applying heat and pressure, and thus may suppress the growth of crystal grains, and does not need a sintering process of 1,000° C. or more, and the magnetization direction of crystal grains is arranged in one direction even without applying the magnetic field by the hot deformation, and thus, a hot-deformed magnet may be more economically produced. Further, the R—Fe—B hot deformed magnet of the present invention includes a structure in which anisotropic plate-shaped crystal grains of uniform size having an average diameter of 400 to 900 nm are evenly distributed throughout the magnet, and has a uniform and minute size of crystal grains in the magnet, and thus, may secure excellent coercive force, and plate-shaped crystal grains formed by the hot deformation may have excellent residual magnetic flux density because the magnetization direction is arranged in one direction. | 03-24-2016 |
20160125985 | Method Of Preparing A Hard Aluminum Film On The Surface Of A ND-FE-B Magnet - The present invention provides a Nd—Fe—B magnet including a first film of aluminum having a first predetermined hardness and an anti-corrosive coating of oxidized aluminum having a second predetermined hardness on the first film. The second predetermined hardness is at least eight times the first predetermined hardness. The present invention also provides a method for preparing a hard aluminum film on the Nd—Fe—B magnet. The method includes depositing the first film on the Nd—Fe—B magnet under vacuum, disposing the Nd—Fe—B magnet having the first film on the anode, and subjecting the Nd—Fe—B magnet having the first film to the anodic oxidation process under a solution containing an electrolyte present between 15 wt. % to 20 wt. % to form the anti-corrosive coating on the first film to prevent the Nd—Fe—B magnet from corroding. The electrolyte is selected from at least one of sulfuric acid, chromic acid, boric acid, and oxalic acid. | 05-05-2016 |
20160133366 | MAGNETIC RUBBER COMPOSITION, MAGNETIC RUBBER MOLDED ARTICLE OBTAINED BY CROSSLINKING THE SAME, AND MAGNETIC ENCODER - There is provided a magnetic rubber composition comprising a rubber (A), a thermosetting resin (B) and a magnetic powder (C), wherein a mass ratio (A/B) of the rubber (A) to the thermosetting resin (B) is 0.2 to 5, and a mass ratio [C/(A+B)] of the magnetic powder (C) to the total mass of the rubber (A) and the thermosetting resin (B) is 0.5 to 20. It gives a magnetic rubber molded article excellent in flexibility and abrasion resistance, and a magnetic encoder produced therewith. | 05-12-2016 |
20160148734 | MAGNETIC MATERIAL, USE THEREOF, AND METHOD FOR PRODUCING SAME - The invention relates to a magnetic material which contains at least one transition metal (TM), at least one rare earth metal (RE), and titanium. The content of the transition metal equals 74 to 94 at %, the content of the rare earth metal equals 2 to 20 at %, and the content of titanium equals 7 to 9 at %, in each case based on the total mass of the magnetic material, and the transition metal comprises cobalt. | 05-26-2016 |
20160148735 | ANNULAR SINTERED MAGNET WITH RADIAL MAGNETIZATION AND REINFORCED MECHANICAL STRENGTH - A sintered annular magnet with a radial orientation of a remanent magnetic field, including: a principal annular part made from a ferromagnetic material, that has a first degree of magnetic anisotropy in the radial direction; and an annular reinforcing part fixed to the principal part of the magnet, the reinforcing part being made from same ferromagnetic material as the ferromagnetic material forming the principal part, and that has a second degree of magnetic anisotropy in the radial direction, the first degree being higher than the second degree. | 05-26-2016 |
20160163435 | R-T-B BASED SINTERED MAGNET AND ROTATING MACHINE - The present invention provides an R-T-B based sintered magnet having excellent corrosion resistance together with good magnetic properties. The R-T-B based sintered magnet contains R | 06-09-2016 |
20160189839 | CONTOURED-FIELD MAGNETS - Apparatus and methods for manufacturing magnets, and magnets, having magnetically oriented grains, and apparatus including such magnets. The field of a permanent magnet may be shaped by applying an external field to the material from which the magnet is made in such a way as to magnetize different regions of the material in different directions. The apparatus may include, and the methods may involve, a metal-powder press that may press metal powder in the presence of a magnetic field. The press may compress the powder in an axial direction. The field may have flux lines that are transverse to the axial direction. The field may have flux lines that are along the axial direction. | 06-30-2016 |
20160203892 | RARE EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING THEREOF | 07-14-2016 |
20160203898 | MULTI-PHASE MAGNETIC COMPONENT AND METHOD OF FORMING | 07-14-2016 |
20160203899 | GRADED MAGNETIC COMPONENT AND METHOD OF FORMING | 07-14-2016 |
20220139601 | RARE EARTH MAGNET AND MANUFACTURING METHOD THEREFOR - The present disclosure provides a rare earth magnet having a main phase and a grain boundary phase and a manufacturing method therefor. In the rare earth magnet of the present disclosure, the overall composition is represented by a formula (R | 05-05-2022 |