Class / Patent application number | Description | Number of patent applications / Date published |
501088000 | Silicon carbide | 85 |
20090111678 | HIGH RESISTIVITY SILICON CARBIDE - A recrystallized silicon carbide body is provided that has a resistivity of not less than about 1 | 04-30-2009 |
20090149308 | Method and Device For Siliconization of Carbon-Containing Materials - Method for treatment of workpieces of porous carbon material with liquid silicon with the formation of silicon carbide, comprising the following steps: preheating of porous carbon workpieces under an inert gas to a selected operating temperature T | 06-11-2009 |
20100041541 | SiC FIBER-BONDED CERAMIC AND PROCESS FOR PRODUCTION OF THE SAME - An SiC fiber bonded ceramic constituted of both a base material which comprises both inorganic fibers made mainly of a sintered SiC structure containing 0.01 to 1 wt % of oxygen (O) and at least one of Groups 2A, 3A and 3B metals and a 1 to 100-nm and carbon (C)-base boundary layer formed among the fibers and a surface part which is made mainly of an SiC-base ceramic structure and formed on at least part of the surface of the base material, characterized in that the boundary portion between the surface part and the base material takes such a gradient structure that the structure of the base material changes into the structure of the surface part gradually and continuously. | 02-18-2010 |
20100069223 | METHOD FOR THE PREPARATION OF CERAMIC MATERIALS - A novel process for the preparation of boron carbide, boron nitride and silicon carbide powders comprises carbidization or nitrization step of boron oxide or silicon oxide respectively, using nanoparticles substrates. | 03-18-2010 |
20100130343 | CERAMICS SLIDING MEMBER FOR USE IN PURE WATER - A ceramics sliding member for use in ultrapure water or pure water of the present invention is made of an SiC sintered body. The SiC sintered body includes β-SiC at a ratio of 20% or more thereto and has an average crystal structure whose aspect ratio is 2 or greater. | 05-27-2010 |
20110172079 | WATER-SOLUBLE BINDER AND CERAMIC MOLDING COMPOSITION - A water-soluble binder comprising a water-soluble hydroxypropyl methyl cellulose having a methoxyl substitution of 28-30 wt % and a hydroxypropyl substitution of 5-7 wt % has a syneresis value of at least 30 wt % and a clay heat gel strength of at least 0.5 kgf. A ceramic molding composition comprising a ceramic material and the water-soluble binder has improved shape retention upon drying and is effectively molded into a ceramic part. | 07-14-2011 |
20110275507 | METHOD FOR FORMING A DIELECTRIC FILM AND NOVEL PRECURSORS FOR IMPLEMENTING SAID METHOD - The invention relates to dielectric layers with a low dielectric constant, said layers being used to separate metallic interconnections especially during the production of integrated circuit boards (in the BEOL part of the circuit). According to the invention, the dielectric layer comprises SiC and/or SiOC, and is obtained from at least one precursor comprising at least one —Si—Cn—Si chain where n=I. | 11-10-2011 |
20120058881 | CERAMIC PRODUCT - The invention relates to a ceramic product, manufactured from a mixture made of natural and/or synthetic inorganic non-metal raw materials, at least one binder and optionally further additives. In order to provide ceramic products allowing for disadvantages known from the prior art to be eliminated, at least with respect to corrosion and erosion, it is proposed that the ceramic products are manufactured from a mixture comprising a) at least 10% by weight (based on the weight of all solids of the mixture) oxidic components, b) 0.05 to 2.7% by weight (based on the weight of all solids of the mixture) at least one organic-based binder, acting as a solubilizer in the mixture, and c) 3 to 10% by weight (based on the weight of all solids of the mixtures) hydrous dispersing agent, and that the ceramic product contains less than 0.1% by weight (based on the total weight of the ceramic product) of carbon after the use thereof at temperatures above 600° C. | 03-08-2012 |
20120058882 | CERAMIC NANOCOMPOSITE MATERIAL AND METHOD OF MANUFACTURING THEREOF - Ceramic nanocomposite and methods for manufacturing thereof. One method comprising: receiving a fired green ceramic body comprising ceramic matrix; introducing to the fired green ceramic body submicron particles; and introducing at least one type of location-controlling dopant at an amount that is sufficient to cover the majority of the ceramic matrix grain boundaries, as well as the majority of the interfaces between the submicron particles and the ceramic matrix grains but less than an amount that would result in a concentration that exceeds the bulk solubility limit of the location-controlling dopant ions in the ceramic matrix, at the ceramic nanocomposite sintering temperature. | 03-08-2012 |
20120165179 | INFILTRATED SILICON CARBIDE BODIES AND METHODS OF MAKING - A composite article including a body made of recrystallized silicon carbide and an infiltrant, wherein the body comprises a static impact resistance of at least about 1800 MPa. | 06-28-2012 |
20120277087 | INTERMETALLIC-CONTAINING COMPOSITE BODIES, AND METHODS FOR MAKING SAME - Composite bodies made by a silicon metal infiltration process that feature a silicon intermetallic, e.g., a metal silicide. Not only does this give the composite material engineer greater flexibility in designing or tailoring the physical properties of the resulting composite material, but the infiltrant also can be engineered compositionally to have much diminished amounts of expansion upon solidification, thereby enhancing net-shape-making capabilities. These and other consequences of engineering the metal component of composite bodies made by silicon infiltration permit the fabrication of large structures of complex shape. | 11-01-2012 |
20120295784 | Ceramic Article - A ceramic article comprises ceramic fibers having an aspect ratio of greater than 3:1 and ceramic particles. The ceramic fibers are substantially randomly oriented in three dimensions in the ceramic article. A method of forming the ceramic article includes the step of providing a composition including ceramic fibers having an aspect ratio of greater than 3:1 and ceramic particles. The composition is extruded through a multi-screw extruder having at least three intermeshing screws to form an extrudate. The extrudate is heated to form the ceramic article. | 11-22-2012 |
20130059720 | SILICON CARBIDE FIBER DISPERSION-REINFORCED COMPOSITE REFRACTORY MOLDING - A silicon carbide fiber dispersion-reinforced composite refractory molding includes an aggregate part and a bonding part which are obtained by compounding an plastic refractory composition containing at least SiC, with SiC fiber chops, in an amount of 0.1 to 3% by weight based on the plastic refractory composition, wherein fiber bundles each including a plurality of SiC inorganic fibers containing 50% or more SiC in their main component and having a length of 10 mm to 100 mm and a fiber diameter of 5 μm to 25 μm were bundled via an organic binder, kneading the mixture with water and then drying and solidifying it, wherein monofilaments including SiC inorganic fibers containing 50% or more SiC, having a fiber diameter of 5 μm to 25 μm, a fiber length of 50 μm to 2,000 μm and an aspect ratio of 5 to 200 are dispersed in the bonding part. | 03-07-2013 |
20130288880 | Sic ceramic material, sic ceramic structure, and their fabrication methods - A SiC ceramic material includes a bundle of SiC continuous fibers in a porous SiC ceramic matrix, has thermal insulation properties, a high level of strength and a high degree of toughness. A SiC ceramic structure is made of the SiC ceramic material. It is produced by preparing a pressure-sintered compact using a slurry prepared by mixing SiC powder and carbon powder in a liquid and by gasifying and releasing the carbon powder. The SiC ceramic structure can be produced by heating a reaction preparation containing a bundle of SiC continuous fibers and Si powder to a temperature equal to or higher than the melting point of silicon causing a reaction of the carbon component and Si powder and thereby obtaining a reaction-sintered compact, and by gasifying and releasing the carbon component from the reaction-sintered compact. The SiC ceramic can be produced by a chemical vapor deposition method. | 10-31-2013 |
20140206525 | POROUS SiC CERAMIC AND METHOD FOR THE FABRICATION THEREOF - There is provided a method for the fabrication of porous SiC ceramic. The method comprises oxidizing particles of SiC ceramic thereby forming amorphous silica on the surface of the particles. The oxidized SiC particles are then mixed with an additive. Alternatively, layer(s) of the additive is (are) deposited on their surface by sol-gel technique. The oxidized SiC particles mixed or coated with the additive are then mixed with at least one pore-former. Alternatively, the oxidized SiC particles mixed or coated with the additive are coated with layer(s) of a polymer or pore-former by in-situ polymerization. In embodiments where the oxidized SiC particles are mixed with an additive and a pore-former or polymer, a further additive may be used. In each of these embodiments, the resulting product is then compacted into a green body which is heated and sintered to yield the porous SiC ceramic material. There is also provided a porous SiC ceramic fabricated by the method according to the invention. | 07-24-2014 |
20140287907 | Silicon Carbide Synthesis - This disclosure concerns a method of making silicon carbide involving adding agricultural husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC). | 09-25-2014 |
20140349832 | CERAMIC NANOCOMPOSITE MATERIAL AND METHOD OF MANUFACTURING THEREOF - Ceramic nanocomposites and methods for manufacturing the ceramic nanocomposites are disclosed. One method includes introducing to a fired green ceramic body having a ceramic matrix submicron particles having coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix and at least one type of location-controlling dopant at an amount that is sufficient to cover the majority of the ceramic matrix grain boundaries. One ceramic nanocomposite includes a ceramic matrix with submicron particles dispersed in the ceramic matrix, the submicron particles having a coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix and at least one dopant that covers the majority of the ceramic matrix grain boundaries, at a concentration that does not exceed the bulk solubility limit of the dopant in the ceramic matrix at the ceramic nanocomposite sintering temperature. | 11-27-2014 |
20150087496 | Refractory ceramic batch and brick formed therefrom - The invention relates to a refractory ceramic batch and to a refractory ceramic brick produced therefrom. | 03-26-2015 |
20160016854 | Ceramic Body Comprising Silicon Carbide and Method of Forming Same - A method of forming a ceramic body including forming a mixture made of at least a first powder material (PM1) including carbon having a first average particle size (PS1), a second powder material (PM2) including carbon and different than the first powder material, the second powder material having a second average particle size (PS2) less than the first average particle size (PS1), and an aluminum content (AC2) greater than the aluminum content (AC1) of the first powder material, and further including forming a green body from the mixture, and sintering the green body and forming a ceramic body having a first type of grain having an average grain size of not greater than about 8 times the first average particle size (PS1). | 01-21-2016 |
20160068446 | SYSTEMS AND METHODS FOR CERAMIC MATRIX COMPOSITES - Methods for fabricating a ceramic matrix composite are disclosed. A fiber preform may be placed in a mold. An aqueous solution may be added to the fiber preform. The aqueous solution may include water, carbon nanotubes, and a binder. The preform may be frozen. Freezing the preform may cause the water to expand and separate fibers in the fiber preform. The carbon nanotubes may bond to the fibers. The preform may be freeze dried to remove the water. The preform may then be processed according to standard CMC process. | 03-10-2016 |
20160083305 | METHOD FOR MAKING CERAMIC MATRIX COMPOSITE ARTICLES - A method of forming a composite article includes impregnating an inorganic fiber preform with a slurry composition. The slurry composition includes a particulate, a solvent, and a pre-gellant material. Gelling of the pre-gellant material in the slurry composition is initiated to immobilize the particulate and yield a gelled article, and substantially all solvent is removed from the gelled article to form a green composite article. The green composite article is then infiltrated with a molten infiltrant to form the composite article. | 03-24-2016 |
20160122251 | METHOD FOR PRODUCING LIQUID DISPERSION OF CERAMIC MICROPARTICLES - The present invention provides a method for producing a dispersion of fine ceramic particles, the method comprising: adding fine ceramic particles having a mean particle size of less than 1 μm to a dispersion medium selected from the group consisting of a lower alcohol and water; and dispersing the fine ceramic particles in the dispersion medium using a rotor-stator homogenizer. The present invention enables the production of a highly homogeneous and stable dispersion of a nanosized ceramic powder, which is prone to aggregation and the homogeneous dispersion of which is difficult to form, by conducting a simple, uncomplicated operation. | 05-05-2016 |
20160159694 | REACTIVE FIBER INTERFACE COATINGS FOR IMPROVED ENVIRONMENTAL STABILITY - A multilayer interface coating for composite material fibers includes a first coating layer deposited onto a fiber and a second coating layer deposited onto the first coating layer. | 06-09-2016 |
20160159698 | CERAMIC MATRIX COMPOSITES AND METHODS OF MAKING THE SAME - An improved method of preparing ceramic matrix composites includes blending one or more ceramic powders with one or more paraffinic binders to form a slurry; introducing a ceramic fiber preform into a die or mold; heating the slurry to a temperature above the melting point of the one or more paraffinic binders to form a heated slurry; introducing the heated slurry into the die or mold, the heated slurry infiltrating the ceramic fiber preform to form a slurry infiltrated preform; cooling the die or mold below the solidification temperature of the paraffinic binder, thereby forming a solid component from the slurry infiltrated preform; removing the solid component from the die or mold; heating the solid component to a temperature whereby the paraffinic binder is removed; and densifying the solid component after removing the paraffinic binder, thereby forming the ceramic matrix composite. | 06-09-2016 |
20160194251 | PROCESSING OF NON-OXIDE CERAMICS FROM SOL-GEL METHODS | 07-07-2016 |
501089000 | And aluminum compound | 21 |
20080261799 | Refractory shaped body with increased alkali resistance - The invention relates to a refractory batch and to a process for its production. The batch comprises a refractory metal oxide main component containing Al | 10-23-2008 |
20100029463 | PREPARATION FOR PRODUCING REFRACTORY MATERIALS - Preparation for producing refractory materials, characterized in that it comprises one or more particulate, refractory components and one or more binders, where—the particulate, refractory component has a mean particle diameter of >0.3 m and—the binder is selected from among—from 0.05 to 50% by weight of a very finely particulate binder having a mean particle diameter of from 10 nm to 0.3 m selected from the group consisting of aluminium oxide, titanium dioxide, zirconium dioxide and/or mixed oxides of the abovementioned oxides, —from 0 to 20% by weight of an inorganic binder, from 0 to 20% by weight of a hydraulically setting binder, —from 0 to 15% by weight of an organic, silicon-free binder—and the preparation additionally contains from 0 to 35% by weight of water, where—the proportion of the particulate, refractory component is equal to 100 and the percentages of the further materials in the preparation are based on the particulate component. | 02-04-2010 |
20100081556 | Oxide-based ceramic matrix composites - An oxide-based ceramic matrix composite and a method of making oxide-based ceramic composite are provided. The oxide-based ceramic matrix composite comprises a ceramic fiber and a mullite-alumina impregnating the ceramic fiber, wherein the mullite-alumina ceramic matrix comprises of 10-70 wt % mullite-alumina mixture. | 04-01-2010 |
20100093513 | Refractory composition, formed refractory article, and sintered refractory article - A refractory composition having excellent erosion resistance and infiltration resistance to a molten metal and a formed article and a sintered article produced from the refractory composition are provided. The refractory composition comprises for 100 parts by mass of at least one compound selected from the group consisting of silicon nitride, boron nitride, and silicon carbide, 5 to 40 parts by mass of at least one compound selected from the group consisting of calcium fluoride, magnesium fluoride, calcium oxide or its precursor, magnesium oxide or its precursor, barium oxide or its precursor, and barium sulfate. The content of the silicon nitride, boron nitride, and silicon carbide in the composition is 20 mass % or more. | 04-15-2010 |
20100248929 | SILICON CARBIDE CERAMIC COMPONENTS HAVING OXIDE LAYER - A ceramic component is provided, including a ceramic body containing silicon carbide, and an oxide layer provided on the ceramic body, the oxide layer being formed by oxidizing the ceramic body in the presence of alumina having a submicron particle size. | 09-30-2010 |
20100304951 | TAPHOLE MIX - It is intended to provide a taphole mix capable of forming SiC bonds with minimum of an excess and a deficiency in components thereof, and excellent in drillability. A fine particle fraction having a particle diameter of 75 μm or less is comprised of three components consisting of a silicon nitride-based material, a carbon-based material, and roseki, or comprised of the three component, and one or more selected from the group consisting of an alumina-based material, a silicon carbide-based material, a rare-earth element oxide-based material, clay, a high-purity silica-based material containing SiO | 12-02-2010 |
20100331166 | CARBON/SILICON CARBIDE SYSTEM COMPOSITE MATERIAL - An object of the present invention is to produce a heat-resistant carbon/silicon carbide system composite material having a high density without deteriorating the mechanical properties such as toughness of carbon fiber. | 12-30-2010 |
20120142518 | CEMENT-FREE REFRACTORY - A cement free refractory mixture contains aluminum oxide, silicon carbide, fumed silica, aluminum metal, an anti-oxidant, reactive alumina, and a carbon-bearing material. The mixture can be formed by conventional techniques to create refractory articles to contain or direct the flow of liquid metals. Refractory articles formed by the mixture do not require firing to achieve an initial cure. | 06-07-2012 |
20120165180 | Method for Obtaining Ceramic Compounds and Resulting Material - Starting from, as the initial composite, an LAS component in accordance with the composition Li | 06-28-2012 |
20120309608 | POWDER FOR DRY REFRACTORY MATERIAL - The invention relates to a powder comprising more than 70% of refractory particles, in weight percent relative to the weight of the powder, a particle of said powder being classed in the fraction called “matrix” or in the fraction called “aggregate”, according to whether it is smaller than, or equal to 100 μm, or larger than 100 μm, respectively, said powder comprising, in weight percent relative to the weight of the powder: between 0.1% and 18% of particles of a heat-activatable binder, called “heat-activatable binder particles”; and more than 40% of refractory particles, called “ATZ particles”, having the following chemical composition, in weight percentages on the basis of the oxides of said ATZ particles: 10%≦Al | 12-06-2012 |
20130210605 | REFRACTORY COMPOSITION AND PROCESS FOR FORMING ARTICLE THEREFROM - A refractory composition and processes for manufacture are provided where the compositions possess improved refractory alkali resistance and superior handling properties. Compositions and processes for their manufacture may include a plurality of ceramic particles and a binder sintered to the particles wherein the binder includes crystalline aluminum orthophosphate distributed as the result of an in situ reaction of aluminum metaphosphate with alumina. Kits provided according to the invention provide materials for use in manufacture of a composition where the kit includes aluminum metaphosphate and a nonfacile additive. | 08-15-2013 |
20130260981 | ALUMINA-COATED SPINEL-SILICON CARBIDE REFRACTORY COMPOSITION WITH HIGH CORROSION RESISTANCE TO COAL SLAG AND METHOD FOR MANUFACTURING THE SAME - Disclosed is an alumina-coated spinel-silicon carbide refractory composition with good resistance to coal slag penetration and a method for manufacturing the same. The refractory composition refractory composition comprising 3 to 10 parts by weight of fine alpha alumina powder with respect to the weight of the refractory mixture, wherein the mixture is prepared by mixing alumina-coated spinel aggregates and silicon carbide in a ratio of 10:90 to 40:60 wt %, a dispersant, and an alumina sol as a binder. | 10-03-2013 |
20130260982 | CEMENT-FREE HIGH STRENGTH UNSHAPED REFRACTORY - Disclosed is a cement-free high strength unshaped refractory in which barium aluminate and a dispersant are further added to a refractory which includes a refractory material containing Al | 10-03-2013 |
20140051566 | CERAMIC SINTERED BODY AND METHOD OF MANUFACTURING CERAMIC SINTERED BODY - A ceramic sintered body according to the present invention comprises: silicon carbide and aluminum nitride, wherein a weight ratio of the aluminum nitride relative to a total weight ratio of the silicon carbide and the aluminum nitride is greater than 10% and 97% or smaller, and a bulk density is greater than 3.18 g/cm | 02-20-2014 |
20150111718 | PRODUCT MADE OF DENSE SILICON CARBIDE - Sintered product exhibiting a relative density of greater than 97% and composed of:
| 04-23-2015 |
20150315088 | SIALON BONDED SILICON CARBIDE MATERIAL - A silicon carbide based material exhibiting high strength, good thermal shock resistance, high resistance to abrasion and being chemically stable to harsh environmental conditions is described. The carbide Ball Hill ceramic comprises a β-SiAlON bonding phase in which sintering is facilitated by at least one rare earth oxide sintering agents incorporated within the Vibrating Sieve batch admixture as starting materials. The residual rare earth sintering aid being chosen so as to impart good mechanical and refractory properties. | 11-05-2015 |
20150340121 | DIELECTRIC MATERIAL - A dielectric material which is able to detect a sign of insulation breakdown before use or while in use, and thus is able to predict the insulation breakdown in advance is provided. Such a dielectric material is made of a composite sintered compact in which conductive particles are dispersed in an insulating material, in which in the conductive particles, a particle diameter D10 having a cumulative volume percentage of 10% by volume in a volume particle size distribution is 0.2 μm or less, a particle diameter D90 having a cumulative volume percentage of 90% by volume is 2 μm or less, a ratio (D90/D10) of the particle diameter D90 having a cumulative volume percentage of 90% by volume to the particle diameter D10 having a cumulative volume percentage of 10% by volume is 3.0 or more, and a ratio (D90/D50) of the particle diameter D90 having a cumulative volume percentage of 90% by volume to the particle diameter D50 having a cumulative volume percentage of 50% by volume is 1.4 or more. | 11-26-2015 |
20160039718 | CERAMIC PRECURSOR BATCH COMPOSITION AND METHOD OF INCREASING CERAMIC PRECURSOR BATCH EXTRUSION RATE - A ceramic precursor batch composition comprising inorganic ceramic-forming ingredients, a hydrophobically modified cellulose ether binder having a molecular weight less than or equal to about 300,000 g/mole and an aqueous solvent is provided. The ceramic precursor batch composition has a ratio of binder to aqueous solvent of less than about 0.32. The ceramic precursor batch composition may be used to increase the rate of extrusion of the composition. A method for increasing a rate of extrusion of a ceramic precursor batch composition is also disclosed. | 02-11-2016 |
20160075604 | REFRACTORY COMPOSITION AND PROCESS FOR FORMING ARTICLE THEREFROM - A refractory composition and processes for manufacture are provided where the compositions possess improved refractory alkali resistance and superior handling properties. Compositions and processes for their manufacture may include a plurality of ceramic particles and a binder sintered to the particles wherein the binder includes crystalline aluminum orthophosphate distributed as the result of an in situ reaction of aluminum metaphosphate with alumina. Kits provided according to the invention provide materials for use in manufacture of a composition where the kit includes aluminum metaphosphate and a nonfacile additive. | 03-17-2016 |
20160137556 | SILICON NITRIDE WEAR RESISTANT MEMBER AND METHOD FOR PRODUCING SILICON NITRIDE SINTERED COMPACT - The present invention provides a silicon nitride wear resistant member comprising a silicon nitride sintered compact containing β-Si | 05-19-2016 |
20160185667 | METHOD OF MANUFACTURING ALUMINA-BASED MILLING MEDIUM - The invention provides a cost effective and environmentally friendly process of manufacturing alumina-based, impact-resistant and wear-resistant ceramic objects from alumina of a lower purity. Particularly, the objects may serve as milling and grinding media, or as superior materials for ballistic and armor protection. | 06-30-2016 |
501090000 | And carbonaceous material | 20 |
20080227618 | BORON CARBIDE SINTERED BODY AND METHOD OF MANUFACTURING THE SAME AND PROTECTIVE BODY - A boron carbide sintered body having a plurality of pores, comprises a boron carbide as a main component and a plurality of graphite particles dispersed in the sinter. The graphite particles is exposed to the pores or is in the vicinity of the pores. | 09-18-2008 |
20080227619 | Method for pressurelessly sintering zirconium diboride/silicon carbide composite bodies to high densities - A method of sintering a ZrB | 09-18-2008 |
20090149309 | Sintered Ceramic, Slide Part therefrom, and Process for Producing Sintered Ceramic - It is an object of the invention to provide a ceramic sintered body that has a dense structure and minimal cracking and that exhibits excellent sliding properties even in a non-lubricated state, as well as a process for its production and sliding parts that employ the same. According to a preferred mode, the sintered body of the invention comprises silicon carbide as the parent material and further contains a solid lubricant A with a mean particle size of no greater than 5 μm and a solid lubricant B with a mean particle size of 10-70 μm. | 06-11-2009 |
20090305867 | METHOD FOR THE PRODUCTION OF A CERAMIC SUBSTRATE, AND A CERAMIC SUBSTRATE - A method for the production of a ceramic substrate for a semiconductor component, includes the steps of producing paper containing at least cellulose fibers, as well as a filler to be carbonized and/or SiC, pyrolizing the produced paper, and siliconizing the pyrolyzed paper. | 12-10-2009 |
20100004115 | Sliding Member, Manufacturing Method Thereof, Mechanical Seal Ring Using Sliding Member and Mechanical Seal Using Mechanical Seal Ring - A sliding member having a sliding surface comprising a silicon carbide sintered body having a primary phase comprising mainly silicon carbide, and a subphase having a different composition from the primary phase and containing at least boron, silicon and carbon. The ratio of pores having a roundness of 6 μm or less and a pore diameter of 10 to 60 μm with respect to all pores having a pore diameter of 10 μm or more in the sliding surface is 60% or more. This enables retention of good seal properties even in a long-term continuous use. The subphase in the silicon carbide sintered body is preferably granular crystal phases dotted among a plurality of the primary phases. This provides excellent lubricating liquid holding performance as well as excellent thermal conductivity and excellent thermal shock resistance properties. | 01-07-2010 |
20100152016 | Method For Producing Carbon-Containing Silicon Carbide Ceramic - [Problems] To provide a method for industrially producing carbon-containing silicon carbide ceramics having excellent structural and other various physical properties after sintering, especially density and strength. [Solving Means] A method for producing carbon-containing silicon carbide ceramics including the step of burning a mixture X of raw materials containing silicon carbide, a carbon raw material, and a sintering aid, wherein the particles constituting the mixture X have an average particle size of from 0.05 to 3 μm. | 06-17-2010 |
20100179049 | SILICON CARBIDE-SILICON CARBIDE FIBER COMPOSITE AND MAKING METHOD - A silicon carbide-silicon carbide fiber composite consists of silicon carbide particles and silicon carbide fibers. The composite has excellent oxidation resistance and finds a wide range of application as heat resistant material. The silicon carbide conversion method is simple and consistent enough to ensure production of silicon carbide-silicon carbide fiber composites with minimized variation in quality. | 07-15-2010 |
20100279845 | PROCESS OF PRODUCING CERAMIC MATRIX COMPOSITES - A process for producing a silicon-containing CMC article that exhibits improved physical, mechanical, and microstructural properties at elevated temperatures exceeding the melting point of silicon. The process entails producing a body containing a ceramic reinforcement material in a solid matrix that comprises solid elemental silicon and/or silicon alloy and a ceramic matrix material. The ceramic matrix composite article is produced by at least partially removing the solid elemental silicon and/or silicon alloy from the solid matrix and optionally reacting at least part of the solid elemental silicon and/or silicon alloy in the solid matrix to form one or more refractory materials. The solid elemental silicon and/or silicon alloy is sufficiently removed from the body to enable the ceramic matrix composite article to structurally and chemically withstand temperatures above 1405° C. | 11-04-2010 |
20100292069 | CARBON COMPOSITE MATERIALS COMPRISING PARTICLES OF METAL CARBIDES DISPERSED THEREIN AND METHOD FOR PRODUCING THE SAME - This invention provides carbon composite materials, which comprise metal carbide particles, at least the particle surfaces or the entirety of which are metal carbides, synthesized in situ from a metal source, i.e., at least one member selected from the group comprising metal particles, metal oxide particles, and composite metal oxide particles, and a carbon source, i.e., a thermosetting resin, dispersed in a carbon, carbon fiber, or carbon/carbon fiber matrix, and contain no free metal particles. This invention also provides a method for producing such composite carbon materials, which enables the production of carbon composite materials having a high coefficient of friction, high thermostability, and abrasion resistance. | 11-18-2010 |
20110028301 | SiC BODIES AND PROCESS FOR THE FABRICATION OF SiC BODIES - Disclosed is a method for the synthesis of silicon carbide (SiC) bodies having a relative density of 99% or higher and a SiC body synthesized according to the method. | 02-03-2011 |
20110160035 | METHOD OF PREPARING PRESSURELESS SINTERED, HIGHLY DENSE BORON CARBIDE MATERIALS - In a method of preparing a boron carbide material, boron carbide powder is washed with essentially pure water at an elevated temperature to generate washed boron carbide powder. The washed boron carbide powder is combined with a sintering aid. The mixture of the boron carbide powder and the sintering aid is pressed to form a shaped material, and the shaped material is sintered. A sintered boron carbide material comprises a boron carbide component that includes boron carbide, elemental carbon, and not more than about 0.6 wt % of oxygen on the basis of the total weight of the boron carbide component. The sintered boron carbide material has a density of at least about 99% of the theoretical density. Another sintered boron carbide material comprises a boron carbide component that includes boron carbide, silicon carbide, elemental carbon, and not more than about 0.3 wt % oxygen on the basis of the total weight of the boron carbide component, and has a density of at least about 97% of the theoretical density. | 06-30-2011 |
20110172080 | Dry and Wet Low Friction Silicon Carbide Seal - A porous sintered silicon carbide body that includes silicon carbide and graphite and methods of making thereof are described. The porous silicon carbide body can be a seal. The porous sintered silicon carbide body defines pores with an average pore size in a range of between about 20 μm and about 40 μm, comprising a porosity in a range of between about 1% and about 5% by volume. | 07-14-2011 |
20130090228 | COMPOSITE BODY AND METHOD OF MAKING - A composite article having a body including a first phase that includes a nitride material, a second phase that includes a carbide material, and a third phase having one of an amorphous phase material with a nitrogen content of at least about 1.6 wt % or an amorphous phase material comprising carbon. | 04-11-2013 |
20130196844 | FORMATION OF SILICON CARBIDE-SILICON NITRIDE NANOPARTICLE CARBON COMPOSITIONS - A composition having nanoparticles of silicon carbide and a carbonaceous matrix or silicon matrix. The composition is not in the form of a powder. A composition having silicon and an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining silicon and the organic compound and heating to form silicon carbide or silicon nitride nanoparticles. | 08-01-2013 |
20140038808 | PROCESS FOR FABRICATION OF HIGH-HARDNESS, FINE-GRAINED, COMPLEX-SHAPED SILICON CARBIDE ARTICLES - A process for the fabrication of a SiC-based article that includes preparing an aqueous suspension with SiC powder, a titanium source, a carbon source and boron carbide powder, spray drying the mixture to obtain a powder, preparing a green body from the powder, applying heat treatment to the green body in a pyrolysis/thermolysis step, pressureless sintering the green body, optimally followed by HIPing for further densification. | 02-06-2014 |
20140094355 | METHOD FOR PRODUCING SILICON CARBIDE-CARBON COMPOSITE - Provided is a novel method for producing a silicon carbide-carbon composite. A green body containing a carbonaceous material | 04-03-2014 |
20140100104 | CARBON FIBER-REINFORCED SILICON CARBIDE COMPOSITE MATERIAL AND METHOD OF PREPARING THE SAME - The present invention provides a method of preparing a carbon fiber-reinforced silicon carbide composite material, wherein carbon nanotubes are formed in the composite material, and then metal silicon is melted and infiltrated into the composite material, so the amount of unreacted metal is reduced and the strength of the composite material is improved, and provides a carbon fiber-reinforced silicon carbide composite material prepared by the method. | 04-10-2014 |
20140329663 | FORMATION OF SILICON CARBIDE-SILICON NITRIDE NANOPARTICLE CARBON COMPOSITIONS - A composition having nanoparticles of silicon carbide and a carbonaceous matrix or silicon matrix. The composition is not in the form of a powder. A composition having silicon and an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining silicon and the organic compound and heating to form silicon carbide or silicon nitride nanoparticles. | 11-06-2014 |
20150141235 | CARBON FIBER-REINFORCED ARTICLE AND METHOD THEREFOR - A method of fabricating a carbon fiber-reinforced article includes providing carbon fibers that have surfaces that include an initial interfacial bonding strength capacity with respect to bonding with boron nitride. The surfaces are then modified to reduce the initial interfacial bonding strength capacity. A layer of boron nitride is then deposited on the modified surfaces and the carbon fibers are then embedded in a ceramic matrix. A carbon fiber-reinforced article includes the carbon fibers, the layer of boron nitride on the surfaces of the carbon fibers, and the ceramic matrix. The article exhibits non-brittle fracture. | 05-21-2015 |
20150299053 | METHOD FOR CONTROLLING CHARACTERISTICS OF CERAMIC CARBON COMPOSITE, AND CERAMIC CARBON COMPOSITE - In a method for controlling characteristics of a ceramic carbon composite, an interfacial layer of a ceramic is formed throughout a carbonaceous material and the interfacial layer of the ceramic has a continuous three-dimensional network throughout the carbonaceous material; and characteristics of a ceramic carbon composite are controlled. In a method, an interfacial layer ( | 10-22-2015 |
501091000 | And different carbide | 11 |
20090264273 | CERAMIC MATERIAL SUITABLE FOR REPAIR OF A SPACE VEHICLE COMPONENT IN A MICROGRAVITY AND VACUUM ENVIRONMENT, METHOD OF MAKING SAME, AND METHOD OF REPAIRING A SPACE VEHICLE COMPONENT - A precursor of a ceramic adhesive suitable for use in a vacuum, thermal, and microgravity environment. The precursor of the ceramic adhesive includes a silicon-based, preceramic polymer and at least one ceramic powder selected from the group consisting of aluminum oxide, aluminum nitride, boron carbide, boron oxide, boron nitride, hafnium boride, hafnium carbide, hafnium oxide, lithium aluminate, molybdenum silicide, niobium carbide, niobium nitride, silicon boride, silicon carbide, silicon oxide, silicon nitride, tin oxide, tantalum boride, tantalum carbide, tantalum oxide, tantalum nitride, titanium boride, titanium carbide, titanium oxide, titanium nitride, yttrium oxide, zirconium, diboride, zirconium carbide, zirconium oxide, and zirconium silicate. Methods of forming the ceramic adhesive and of repairing a substrate in a vacuum and microgravity environment are also disclosed, as is a substrate repaired with the ceramic adhesive. | 10-22-2009 |
20090312173 | VOLUME-CHANGE RESISTANT SILICON OXY-NITRIDE OR SILICON OXY-NITRIDE AND SILICON NITRIDE BONDED SILICON CARBIDE REFRACTORY - A reaction sintered silicon carbide-based product, including a silicon carbide component, a bond component, wherein the bond component includes silicon oxynitride in excess of any silicon nitride of the bond component, and at least one boron component residual to an amount present prior to reaction sintering to cause increased resistance of the reaction sintered silicon carbide-based product to volume change under oxidative stress, and methods of making the same. | 12-17-2009 |
20100035746 | Methods for Making Carbide-Metal Nanocomposite Powders - This chemical vapor synthesis process was designed so that a metal carbide precursor and a secondary metal precursor are separately or together fed into each evaporator in a reactor by specially designed precursor feeders, either simultaneously or sequentially. The reduction and carburization of the vaporized precursors by gaseous mixtures produces carbide-metal nanocomposite powders. The product can be a very uniform mixture of the constituent powders or a uniform agglomerate, which is important to ensure a high quality of bulk cemented metal carbide product after consolidation and sintering. These nanocomposite powders can be readily characterized using XRD, carbon analyzer and TEM. | 02-11-2010 |
20100130344 | High resistivity SiC material with B, N and O as the only additions - A dense silicon carbide (SiC) material with boron (B), nitrogen (N) and oxygen (O) as the only additives and with excellent insulting performance (electrical volume resistivity greater than 1×10 | 05-27-2010 |
20100240517 | COMPOSITIONS FOR IMPROVED CERAMIC ARMOR - The present invention contemplates the addition of zirconium compounds to well known ceramic ballistic materials to increase resistance to penetration by projectiles. In the preferred embodiments of the present invention, the zirconium compound that is employed consists of ZrO | 09-23-2010 |
20110009255 | BORON-SILICON-CARBON CERAMIC MATERIALS AND METHOD OF MAKING - A reaction bonded ceramic body that has 50% to 60%, by weight, boron carbide, and 20% to 30%, by weight, silicon carbide. The reaction bonded ceramic body has least a portion of the boron carbide reacted with silicon to become siliconized boron carbide. Also, a method of making a reaction bonded ceramic material. The method may include the steps of forming a green body from a mixture of boron carbide, carbon, and an organic binder, and contacting the green body with a liquid infiltrant comprising silicon. The infiltrant has a temperature of about 1625° C. to about 1700° C. Furthermore, a method of making a reaction bonded boron carbide ceramic body. The method includes the steps of forming a green body from a mixture of boron carbide, carbon, and an organic binder. The weight ratio of boron carbide to carbon in the green body may be about 5:5 to 1 or more. The method also includes siliconizing a first portion of the boron carbide to siliconized boron carbide by contacting the green body with a molten silicon infiltrant, where the infiltrant has a temperature of about 1625° C. to about 1700° C. The method may further include dissolving a second portion of the boron carbide in the silicon infiltrant, where at least some of the dissolved boron carbide is reprecipated as smooth particulates. | 01-13-2011 |
20110136654 | COMPONENT IN A COMBUSTION SYSTEM, AND PROCESS FOR PREVENTING SLAG, ASH, AND CHAR BUILDUP - Disclosed herein is a component in a combustion system comprising a composite, the composite comprising silicon carbide; and a refractory metal silicide comprising a phase selected from Rm | 06-09-2011 |
20120157292 | DENSE BORON CARBIDE CERAMIC AND PROCESS FOR PRODUCING THE SAME - An aspect of the present invention is to provide an economical production technology for obtaining a dense boron carbide ceramic product without impairment to excellent mechanical properties, which boron carbide ceramics are inherently equipped with, by conducting heating under normal pressure without application of pressure and without needing addition of a large amount of a sintering additive to a raw material or needing any special additive or treatment. The present invention provides a production process in which, upon heating a boron carbide green body under normal pressure without application of pressure after pressing a boron carbide powder material to obtain the boron carbide green body, the boron carbide green body is heated with one of a powder, green body or sintered body, which contains at least one of aluminum and silicon, being disposed in a furnace. | 06-21-2012 |
20130184141 | PROCESS FOR PRODUCING CERAMIC FIBER-REINFORCED COMPOSITE MATERIAL AND CERAMIC FIBER-REINFORCED COMPOSITE MATERIAL - To obtain a ceramic fiber-reinforced composite material, by melt-infiltrating a composite material substrate obtained by forming ceramic fibers into a composite with a matrix formed of an inorganic substance, with an alloy having a composition that is constituted by a disilicate of at least one or more transition metal among transition metals that belong to Group 3A, Group 4A or Group 5A of the Periodic Table and silicon as the remainder, and having the silicon content ratio of 66.7 at % or more. | 07-18-2013 |
20150376069 | Multi-Functional BN-BN Composite - Multifunctional Boron Nitride nanotube-Boron Nitride (BN—BN) nanocomposites for energy transducers, thermal conductors, anti-penetrator/wear resistance coatings, and radiation hardened materials for harsh environments. An all boron-nitride structured BN—BN composite is synthesized. A boron nitride containing precursor is synthesized, then mixed with boron nitride nanotubes (BNNTs) to produce a composite solution which is used to make green bodies of different forms including, for example, fibers, mats, films, and plates. The green bodies are pyrolized to facilitate transformation into BN—BN composite ceramics. The pyrolysis temperature, pressure, atmosphere and time are controlled to produce a desired BN crystalline structure. The wholly BN structured materials exhibit excellent thermal stability, high thermal conductivity, piezoelectricity as well as enhanced toughness, hardness, and radiation shielding properties. By substituting with other elements into the original structure of the nanotubes and/or matrix, new nanocomposites (i.e., BCN, BCSiN ceramics) which possess excellent hardness, tailored photonic bandgap and photoluminescence, result. | 12-31-2015 |
20160145158 | PROCESS FOR PRODUCING CERAMIC FIBER-REINFORCED COMPOSITE MATERIAL AND CERAMIC FIBER-REINFORCED COMPOSITE MATERIAL - To obtain a ceramic fiber-reinforced composite material, by melt-infiltrating a composite material substrate obtained by forming ceramic fibers into a composite with a matrix formed of an inorganic substance, with an alloy having a composition that is constituted by a disilicate of at least one or more transition metal among transition metals that belong to Group 3A, Group 4A or Group 5A of the Periodic Table and silicon as the remainder, and having the silicon content ratio of 66.7 at % or more. | 05-26-2016 |
501092000 | And boride, silicide, nitride, or oxynitride | 8 |
20080234122 | A SINTERED REFACTORY MATERIAL BASED ON SILICON CARBIDE WITH A SILICON NITRIDE BINDER - A sintered material based on silicon carbide (SiC) reactively sintered between 1,100° C. and 1,700° C. to form a silicon nitride binder (Si | 09-25-2008 |
20090048087 | HIGH-DENSITY PRESSURELESSLY SINTERED ZIRCONIUM DIBORIDE/SILICON CARBIDE COMPOSITE BODIES AND A METHOD FOR PRODUCING THE SAME - A method of sintering a ZrB | 02-19-2009 |
20090312174 | CERAMIC ARTICLE - A ceramic article comprises ceramic fibers having an aspect ratio of greater than 3:1 and ceramic particles. The ceramic fibers are substantially randomly oriented in three dimensions in the ceramic article. A method of forming the ceramic article includes the step of providing a composition including ceramic fibers having an aspect ratio of greater than 3:1 and ceramic particles. The composition is extruded through a multi-screw extruder having at least three intermeshing screws to form an extrudate. The extrudate is heated to form the ceramic article. | 12-17-2009 |
20100016144 | Sintered Silicon Wafer - Provided is a sintered silicon wafer, wherein the volume ratio of silicon oxide contained in the wafer is 0.01% or more and 0.2% or less, the volume ratio of silicon carbide is 0.01% or more and 0.15% or less, and the volume ratio of metal silicide is 0.006% or less. Additionally provided is a sintered silicon wafer having a diameter of 400 mm or more and having the following mechanical properties (1) to (3) measured by collecting a plurality of test samples from the sintered silicon wafers: (1) average value of the deflecting strength based on a three-point bending test is 20 kgf/mm | 01-21-2010 |
20100120604 | SILICON CARBIDE MATERIAL FOR NUCLEAR APPLICATIONS, PRECURSOR AND METHOD FOR FORMING SAME, AND STRUCTURES INCLUDING THE MATERIAL - A precursor formulation of a silicon carbide material that includes a ceramic material and a boron-11 compound. The ceramic material may include silicon and carbon and, optionally, oxygen, nitrogen, titanium, zirconium, aluminum, or mixtures thereof. The boron-11 compound may be a boron-11 isotope of boron oxide, boron hydride, boron hydroxide, boron carbide, boron nitride, boron trichloride, boron trifluoride, boron metal, or mixtures thereof. A material for use in a nuclear reactor component is also disclosed, as are such components, as well as a method of producing the material. | 05-13-2010 |
20100248930 | COMPOSITE MATERIALS AND BODIES INCLUDING SILICON CARBIDE AND TITANIUM DIBORIDE AND METHODS OF FORMING SAME - Methods of forming composite materials include coating particles of titanium dioxide with a substance including boron (e.g., boron carbide) and a substance including carbon, and reacting the titanium dioxide with the substance including boron and the substance including carbon to form titanium diboride. The methods may be used to form ceramic composite bodies and materials, such as, for example, a ceramic composite body or material including silicon carbide and titanium diboride. Such bodies and materials may be used as armor bodies and armor materials. Such methods may include forming a green body and sintering the green body to a desirable final density. Green bodies formed in accordance with such methods may include particles comprising titanium dioxide and a coating at least partially covering exterior surfaces thereof, the coating comprising a substance including boron (e.g., boron carbide) and a substance including carbon. | 09-30-2010 |
20120172193 | METHOD FOR PRODUCING PRESSURELESSLY SINTERED ZIRCONIUM DIBORIDE/SILICON CARBIDE COMPOSITE BODIES - A method of sintering a ZrB | 07-05-2012 |
20130059721 | SUPERHARD ELEMENT, METHOD OF USING SAME AND METHOD OF MAKING SAME - A superhard element ( | 03-07-2013 |