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| Number | Title | Issue Date |
| 8133532 | Method of densifying porous articles The present invention describes a method of CVI densification in which particular arrangements and mixtures of undensified porous substrates and partially densified porous substrates are arranged in particular ways in order to use the thermal characteristics of the ... | 03/13/2012 |
| 7419700 | Nanoparticle-modified carbon-ceramic brake discs Carbon-ceramic brake discs, the remaining porosity in which, after infiltration with a carbide-forming element and reaction of this element with at least part of the carbon in the preliminary body of the carbon-ceramic brake disc to form carbides, is at least partly... | 09/02/2008 |
| 7381445 | Method of coating a ceramic matrix composite fiber A method of coating a ceramic matrix composite fiber is disclosed. The method includes passing the composite fiber through a reaction zone along a path substantially parallel to a longitudinal axis of the reaction zone. It also includes passing a flow of a fiber coa... | 06/03/2008 |
| 7338684 | Vapor grown carbon fiber reinforced composite materials and methods of making and using same A process for producing-vapor grown carbon fiber (VGCF) reinforced continuous fiber performs for the manufacture of articles with useful mechanical, electrical, and thermal characteristics is disclosed. Continuous fiber preforms are treated with a catalyst or cataly... | 03/04/2008 |
| 7332195 | Chemical vapor deposition method Method for densifying a porous carbon preform (5). The method includes the steps of: (a) providing the apparatus (11); (b) charging the apparatus (11) with a plurality of stacks of annular porous carbon preforms (5), the preforms being se... | 02/19/2008 |
| 7306826 | Use of biased fabric to improve properties of SiC/SiC ceramic composites for turbine engine components A method for making a ceramic matrix composite turbine engine component, wherein the method includes providing a plurality of biased ceramic plies, wherein each biased ply comprises ceramic fiber tows, the tows being woven in a first warp direction and a second weft... | 12/11/2007 |
| 7297368 | Method of making carbon fiber-carbon matrix reinforced ceramic composites A method of making a carbon fiber-carbon matrix reinforced ceramic composite wherein the result is a carbon fiber-carbon matrix reinforcement is embedded within a ceramic matrix. The ceramic matrix does not penetrate into the carbon fiber-carbon matrix reinforcement... | 11/20/2007 |
| 6808746 | Multilayer carbon nanotube films and method of making the same This invention relates to a process for the preparation of a substrate-free aligned nanotube film, comprising: (a) synthesizing a layer of aligned carbon nanotubes on a quartz glass substrate by pyrolysis of a carbon-containing material, in the presence of a suitabl... | 10/26/2004 |
| 6726962 | Method for forming composite articles A composite structure is formed by depositing a one or more coatings on an open-cell foam skeleton to form a higher-density composite foam. In accordance with one aspect of the invention, the composite foam can be at carbon carbon composite formed by a rapid densifi... | 04/27/2004 |
| 6723389 | Process for producing coated cemented carbide excellent in peel strength A coated cemented carbide excellent in peel strength includes a cemented carbide substrate comprising a hard phase containing tungsten carbide and a binder phase, and a hard film being provided on a surface of the substrate with a single layer or two or more laminat... | 04/20/2004 |
| 6723381 | Method and apparatus for manufacturing ceramic-based composite member An organic silicon polymer is infiltrated and charged into gaps in a matrix phase of a formed fiber fabric, and its airtightness is increased by (a) CVI infiltration process 2 for forming the SIC matrix phase on the surface of the fiber fabric formed, (b) pre... | 04/20/2004 |
| 6416824 | Densification A method of deposing a carbon-containing substance in the pores of a porous body comprises establishing an open varying magnetic field flux loop and placing the body such that a magnetic field flux generated by the open magnetic field flux loop passes thr... | 07/09/2002 |
| 6413585 | Thermochemical treatment, in halogenated atmosphere, of a carbon-containing material The invention concerns (1) thermochemically treating by pack-cementation a carbon-containing material, which may have an open porosity, to generate a refractory carbide coating on its surface and, if the material is porous, within the material; and (2) th... | 07/02/2002 |
| 6410088 | CVI (chemical vapor infiltration) densification of porous structures The present invention provides a method of densifying porous structures by chemical vapor infiltration. In characteristic manner, said densification method is implemented using toluene as a precursor for carbon. Said toluene is generally used mixed with a... | 06/25/2002 |
| 6361722 | Methods of producing carbon-carbon parts having filamentized composite fiber substrates A method of producing a carbon-carbon part having a filamentized composite fiber substrate is provided. A substrate having a plurality of discontinuous filamentized fibers and a binder that binds said filaments together to form a composite substrate is pr... | 03/26/2002 |
| 6346304 | Densification of a porous structure (II) At least one layer of fibers of a material susceptible to heating by electromagnetic radiation is incorporated in a porous structure. The structure is subjected to the radiation to heat up the body which is contacted with hydrocarbon gas to cause the gas ... | 02/12/2002 |
| 6346303 | Process for synthesizing one-dimensional nanosubstances by electron cyclotron resonance chemical vapor deposition The present invention provides a process for synthesizing one-dimensional nanosubstances. A membrane having channels serves as the host material for the synthesis. The anodic membrance is brought into contact with a microwave excited plasma of a precursor... | 02/12/2002 |
| 6316051 | Process for producing silicon carbide fiber Silicon carbide fibers having an excellent mechanical strength and a superior heat resistance can be produced by the process in which activated carbon fibers having a thickness of 1 to 30 μm and a BET specific surface area of 700 to 1500 m2 /g... | 11/13/2001 |
| 6245385 | Method for making shaped carbides of cohesively intertangled single fibers Cellulosic single fibers such as cotton is prepared without any resins or pitches to a mass or bulk such as a lap which is self-shaped and retains its form by a force of cohesive intertanglement of fibers. The mass as prepared is heated for carbonization ... | 06/12/2001 |
| 6143376 | Method for manufacturing coated short fibers A method for manufacturing coated short fibers, in which the short fibers are coated in a reactor with at least one coating agent. The method includes exposing a short fiber bundle having a coating or a plastic matrix to a high-frequency field which disso... | 11/07/2000 |
| 6051167 | Process of making carbon-carbon composites A carbon composite structure, for example, an automotive engine piston, is made by preparing a matrix including of a mixture of non crystalline carbon particulate soluble in an organic solvent and a binder that has a liquid phase. The non crystalline part... | 04/18/2000 |
| 5916633 | Fabrication of carbon/carbon composites by forced flow-thermal gradient chemical vapor infiltration The fabrication of carbon/carbon composite disks using forced flow-thermal gradient chemical vapor infiltration process using propylene diluted with hydrogen as the reagent is disclosed. The independent variables included concentration of the reagent, tot... | 06/29/1999 |
| 5707916 | Carbon fibrils A volume of carbon fibrils that includes a multiplicity of fibrils having a morphology consisting of vermicular tubes that are free of a continuous thermal carbon overcoat and have graphite layers that are substantially parallel to the fibril axis and a p... | 01/13/1998 |
| 5577263 | Chemical vapor deposition of fine grained rhenium on carbon based substrates A method for producing a composite element by causing a stream of gaseous rhenium hexafluoride to flow onto a carbon substrate in a chemical vapor deposition reaction. A flow of hydrogen gas causes a reduction of the rhenium hexafluoride to rhenium metal ... | 11/19/1996 |
| 5540949 | Method for cutting threads in a carbon-carbon structure The cutting of attachment threads in a carbon-carbon billet is improved by coating the portion to be threaded with an epoxy resin, and at least partially curing the resin prior to cutting the threads.... | 07/30/1996 |
| 5525372 | Method of manufacturing hybrid fiber-reinforced composite nozzle material The conversion of carbon-carbon of a composite material at the surface to licon carbide-hybridized carbon-carbon in accordance with the method of invention is accomplished by reacting the carbon fibers and matrix with silicon monooxide at elevated tempera... | 06/11/1996 |
| 5476685 | Process for the manufacture of a fiber reinforced composite material having a ceramic matrix and preheated carbon fibers In a process according to the invention, before a carbon/fiber ceramic matrix is densified, the carbon fiber reinforcement material is subjected to a thermal treatment in a non-oxidizing environment at a temperature greater than 1300° C. and less than 22... | 12/19/1995 |
| 5466917 | Microwave-absorptive heat-generating body and method for forming a heat-generating layer in a microwave-absorptive heat-generating body A sheet-like heat generation body for use in a microwave oven, which absorbs microwave and generates heat to irradiate food to be cooked. This heat generation body comprises a conductive film, which is made of a crystalline carbon as its principal compone... | 11/14/1995 |
| 5431800 | Layered electrodes with inorganic thin films and method for producing the same A method for the preparation of layered electrodes, including ultramicroelectrodes, through application of a thin film coating of an inorganic material to a conductor by use of chemical vapor deposition. The chemical vapor deposition techniques of the pre... | 07/11/1995 |
| 5411763 | Method of making a modified ceramic-ceramic composite The present invention provides a method of making a shaped ceramic-ceramic composite articles, such as gas-fired radiant heat burner tubes, heat exchangers, flame dispersers, and other furnace elements, having a formed-on ceramic-ceramic composite thereon... | 05/02/1995 |
| 5397595 | Method of densifying porous billets In accordance with the invention there is provided a method of producing a densified carbon preform having interior a porous region of graded carbon-silicon carbide, carbon-silicon nitride or ceramic-ceramic composition.... | 03/14/1995 |
| 5389400 | Method for making a diamond/carbon/carbon composite useful as an integral dielectric heat sink A method for producing a diamond/carbon/carbon composite is provided which includes the steps of densifying a preform of interwoven vapor grown carbon fibers form a carbon/carbon composite, and then depositing a polycrystalline diamond film on the carbon/... | 02/14/1995 |
| 5380475 | Process for manufacturing an oxidation-stable component on a CFC base, particularly for space travel For the manufacturing of an oxidation-stable component that can withstand temperature changes for space travel, a solid CFC-body with a density of from 0.1 to 0.8 g/cm3, which has nondirectional short fibers, is made from short carbon fibers an... | 01/10/1995 |
| 5380556 | Part made of a carbon-carbon composite with an SIC surface-treated matrix resistant to oxidation and a process for producing it A structural part made of carbon-carbon composite with a matrix surface-treated with SiC, resistant to oxidation and a process for manufacturing it. According to the invention, the structural part has a fibrous preform (2) composed solely of carbon fibers... | 01/10/1995 |
| 5358741 | Composite fibers having a diamond surface The present invention relates to composite fibers having a diamond surface which can be produced using a substrate such as graphite, or other non-diamond inorganic fiber. These substrates produced in the manner described, give rise to improved diamond dep... | 10/25/1994 |
| 5322711 | Continuous method of covering inorganic fibrous material with particulates To inhibit agglomeration of fibrous material during composite preparation and to increase transverse strength, particulates such as whiskers have been attached to the fibrous material. Whiskers can be economically grown on the fibrous material while it is... | 06/21/1994 |
| 5284685 | Composite material with carbon reinforced fibers and its production A process for making a composite material wherein carbon reinforcing fibers may be coated with a carbon coating and a silicon carbide coating. The fibers are then densified in a carbon-based matrix, covered by a first silicon carbide layer, optionally sea... | 02/08/1994 |
| 5254396 | Carbon fiber structure and process for producing the same An infusiblized, or infusiblized and slightly carbonized fiber of optically anisotropic pitch type is combined with a phenolic resin fiber to produce a high bulk density carbon fiber structure in the form of a laminate of mutually entangled carbon fiber s... | 10/19/1993 |
| 5217657 | Method of making carbon-carbon composites A process for making 2D and 3D carbon-carbon composites having a combined high crystallinity, high strength, high modulus and high thermal and electrical conductivity. High-modulus/high-strength mesophase derived carbon fibers are woven into a suitable cl... | 06/08/1993 |
| 5165909 | Carbon fibrils and method for producing same The invention relates to carbon fibrils characterized by a substantially constant diameter, length greater than about 5 times the diameter, an ordered outer region of catalytically grown, multiple, substantially continuous layers of ordered carbon atoms h... | 11/24/1992 |
