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| Number | Title | Issue Date |
| 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 |
| 7247513 | Dissociation of silicon clusters in a gas phase during chemical vapor deposition homo-epitaxial growth of silicon carbide A method of forming a layer of silicon carbide wherein silicon clusters are dissociated in a gas phase. Silicon clusters may be dissociated by a silicon-etching gas such as a group VII-containing component. A semiconductor device is also disclosed having a layer for... | 07/24/2007 |
| 7153543 | Refractory-carbon composite brake friction elements Refractory carbide particles are located in a defined area of a matrix, specifically silicon carbide particles are encapsulated within a porous matrix or carbon precursor, by locating particles of refractory carbide-forming material or a precursor thereof in a defin... | 12/26/2006 |
| 6942893 | Densifying hollow porous substrates by chemical vapor infiltration A porous substrate having a concave inside face and an outside face is disposed in an enclosure, and reactive gas is introduced into the enclosure to densify the substrate. At least a portion of the gas is divided into two non-zero fractions. The first fraction of t... | 09/13/2005 |
| 6896968 | Coatings and method for protecting carbon-containing components from oxidation A protective coating for a carbon-containing component comprises a material selected from the group consisting of non-stoichiometric silicon and carbon; non-stoichiometric silicon and oxygen; non-stoichiometric silicon and nitrogen; compounds of silicon, oxygen, and... | 05/24/2005 |
| 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 |
| 6596340 | Method of regulating a high temperature gaseous phase process and use of said method A method of regulating a high temperature gas phase process on the basis of a measurement curve determined by means of infrared spectroscopy, the curve having at least one spectral peak which is characteristic for the regulation of the process and which d... | 07/22/2003 |
| 6447842 | Process for producing a corrosion-resistant member A corrosion-resistant member includes a substrate made of a ceramic material and having a diameter of at least 200 mm, and a film of chemically vapor deposited silicon carbide having a thickness of not less than 0.5 mm and covering at least such a portion... | 09/10/2002 |
| 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 |
| 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 |
| 6265077 | Ceramic articles and method for manufacturing the same A ceramic article having a base made of an insulating ceramic material, the insulating ceramic material includes a metal element, and a conductive surface layer provided on the base, wherein the conductive surface layer includes carbon atoms as its main c... | 07/24/2001 |
| 6197374 | Method for chemical vapor infiltration of refractory substances, especially carbon and silicon carbide A method for isothermic, isobaric chemical vapor infiltration (CVI) of refractory substances, especially of carbon (C) and silicon carbide (SiC), based on diffusion in a porous structure, whereby the pressure of the gas or partial pressure of an educt gas... | 03/06/2001 |
| 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 |
| 5825565 | Reflector In order to produce lightweight mirror structures or other reflecting components, preformed silicon elements of sufficient wall thickness are applied to a CFC or CMC substrate structure with the dimensions of the component to be produced, at a temperature... | 10/20/1998 |
| 5654034 | Composite thermocouple protection tubes A semiconductor protection tube is a ceramic tube with a layer of silicon carbide covering at least a portion of the tube adjacent an open front end of the tube and extending forward of the open end to form a hollow, closed-end tip. The protection tube is... | 08/05/1997 |
| 5304397 | Oxidation resistant carbon and method for making same A coated carbon body having improved resistance to high temperature oxidation and a method for producing the coated carbon body are described. The coated carbon body comprises a carbon body, an intermediate glass forming coating within said converted laye... | 04/19/1994 |
| 5209950 | Composition for SiC pack cementation coating of carbonaceous substrates This invention relates to an improved pack mixture composition useful for the formation of a SiC pack cementation coating for protecting a carbonaceous substrate from degradation at temperatures above about 800° F. comprising: Si from about 15% to about ... | 05/11/1993 |
| 4871587 | Process for coating an object with silicon carbide A process for coating a carbon or graphite object with silicon carbide by contacting it with silicon liquid and vapor over various lengths of contact time. In the process, a stream of silicon-containing precursor material in gaseous phase below the decomp... | 10/03/1989 |
| 4624735 | Constituent members of a semiconductor element-manufacturing apparatus and a reaction furnace for making said constituent members The constituent members of a semiconductor element-manufacturing apparatus which are formed by depositing a silicon carbide layer on a carbon substrate, and wherein a peak X-ray diffraction on the (200) plane of the silicon carbide layer has a half value ... | 11/25/1986 |
| 4591514 | Method for making self-protecting carbon bodies A method of forming a coated article is described. The article is composed of a carbon body having a thermochemically deposited coating which renders the body resistant to oxidation at high temperatures. A volatile gaseous halide of silicon is partially r... | 05/27/1986 |
| 4476164 | Deposition of improved SiC coatings on carbon-base materials Carbon-carbon composite materials are provided with significantly enhanced oxidation resistance by the formation of a SiC coating. The coating is produced from a pack containing a small but effective amount of boron. The balance of the pack is preferably ... | 10/09/1984 |
| 4373006 | Silicon carbide coated carbon fibers and composites Silicon carbide coated carbon fibers and composite materials incorporating these fibers are disclosed. The silicon carbide coating provides electrical insulation and improved resistance to environmental degradation. The coated fibers may be embedded in or... | 02/08/1983 |
| 4315968 | Silicon coated silicon carbide filaments and method Silicon carbide filament is produced by overcoating a carbon monofilament core using continuous process vapor deposition. The deposition takes place by passing the carbon monofilament through a reactor into which gaseous sources of silicon and carbon are ... | 02/16/1982 |
| 4293512 | Making temperature-stable protectively coated graphite molded body In order to prevent a protective carbide layer on a graphitic molded article from splitting off under thermal stress, an external carbide layer is provided on a graphitic molded article having a graded content of silicon or zirconium (in the carbide state... | 10/06/1981 |
| 4194028 | Process for applying a protective layer to shaped carbon bodies The invention relates to the preparation of a material more favorably pri that the usual quartz crucible for use in the crucible-pulling of silicon according to Czochralski. To prevent reaction of the crucible wall with molten silicon, the surface of the... | 03/18/1980 |
