Patent application number | Description | Published |
20080304959 | Joint Between a Metal Part and a Ceramic Part Based Sic and/or C - An assembly between a metal piece and a ceramic material piece made of SiC and/or C based ceramic material. The assembly includes a stack structure including the following elements assembled together in pairs in this order, by brazing: the metal piece; a first intermediate piece; a second intermediate piece; and the ceramic material piece. The second intermediate piece is made of another ceramic material, that is chemically less reactive relative to metals than are SiC or C, and that presents a coefficient of expansion smaller than that of the material constituting the metal piece. The first intermediate piece is made of metal and can deform to compensate for expansion difference between the metal piece and the second intermediate piece. The assembly can be used in a turbomachine. | 12-11-2008 |
20080307793 | Brazed Joint Between a Metal Part and a Ceramic Part - An assembly including a metal piece, a piece made of ceramic material, and at least one intermediate connection element assembled to each of the pieces by brazing. The intermediate connection element includes a deformable sheet presenting at least two flat zones brazed to respective ones of the pieces, the two flat zones being interconnected by a deformable zone presenting at least two free undulations oriented in alternation towards the metal piece and towards the piece made of ceramic material. | 12-18-2008 |
20090068004 | BRAZED JOINT BETWEEN A TITANIUM-BASED METAL PART AND A CERAMIC PART BASED ON SILICON CARBIDE (SIC) AND/OR CARBON - The assembly comprises a stack structure made up of the following elements assembled together in pairs by brazing: the titanium-based metal piece ( | 03-12-2009 |
20090155671 | SUPERPLASTIC SEALING SYSTEM, PREFERENTIALY FOR ELECTROCHEMICAL CELL SYSTEM - The invention relates to a seal ( | 06-18-2009 |
20110176911 | ASSEMBLING TITANIUM AND STEEL PARTS BY DIFFUSION WELDING - A method of assembling together titanium parts and steel parts by diffusion welding, the method interposing two thin layers of niobium or vanadium and copper respectively between a titanium part and a steel part, evacuating the assembly of parts and interposed metal layers, and subjecting the assembly to hot isostatic compression at a temperature lying in a range 900° C. to 950° C. and at a pressure lying in a range 1000 bars to 1500 bars for about two hours. The method can be applied to fabricating turbine shafts for turbomachines. | 07-21-2011 |
20110262638 | DEVICE AND METHOD FOR DEPOSITING A POWDER MIXTURE FOR FORMING AN OBJECT WITH COMPOSITION GRADIENTS - A device for depositing a mixture of powders to form an object with composition gradients, including: a plurality of tanks respectively configured to contain different powders; a powder mixer placed under the tanks and including a rotatably mounted mixing member; a plurality of powder dispensing mechanisms respectively cooperating with the tanks, and each configured to regulate mass flow rate of the powder escaping from a respective of the tanks towards the mixer; a powder mixture collector placed under the mixer; and a powder mixture dispenser placed under the collector. | 10-27-2011 |
20120222971 | HYDROGEN STORAGE TANK WITH METAL HYDRIDES - A tank for storing hydrogen through absorption into a material, the tank having a longitudinal axis and including an outer enclosure and an inner structure having a longitudinal axis, including a plurality of stages and a heat exchange system within the inner structure, each stage including a lower bottom, an upper bottom, longitudinal partition walls, and transverse partition walls. The partition walls form with the lower and upper bottoms compartments for receiving the hydrogen storage material. The upper bottom and/or the upper bottom and the transverse partition walls or longitudinal partition walls are made as a single piece. | 09-06-2012 |
20120222972 | HYDROGEN STORAGE TANK HAVING METAL HYDRIDES - A hydrogen storage tank by absorption into a hydrogen storage material, the tank having a longitudinal axis and including an enclosure and an inner structure provided within the enclosure. The inner structure includes a plurality of stages and a heat exchange system within the inner structure, each stage including a plurality of compartments distributed into a plurality of rows directed along the longitudinal direction, each compartment having a semi-cylindrical shape, and each compartment containing a hydrogen storage material, wherein the material has been introduced through the opening. | 09-06-2012 |