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5654094 Metal carbide fibers  
This invention relates to a process for forming metal or non-metal carbide fiber from the corresponding metal or non-metal containing material such as a silicon sol or mixtures thereof and...
5651950 Process for producing silicon carbide  
Disclosed is a process for producing silicon carbide. The process includes the steps of (1) mixing β-resin extracted from coal-tar pitch with α-resin and silica gel; (2) after being dried,...
5648028 Method of manufacturing a sintered composite body of silicon nitride and silicon carbide  
A sintered composite body of silicon nitride and silicon carbide is manufactured by mixing a silicon powder with a carbonaceous powder and a sintering additive, producing a mixture, molding the...
5618510 Process for producing silicon carbide material  
A silicon carbide material in the form of fibers, sheets or three-dimensionally structured articles useful as a reinforcing material and heat-insulating material, is produced by reacting an...
5616308 Process for producing an oxygen-free or low-oxygen, high-temperature resistant shaped article of silicon carbide  
A process for producing oxygen-free or low-oxygen shaped bodies of silicon carbide, particularly SiC fibers, by using chemically reactive polysilanes and/or polycarbosilanes as precursors. In...
5614162 Process for the production of long fibrous silicon carbide whiskers  
The production of SiC whiskers and of mats thereof on a substrate by treatment, at 1250° to 1500° C., of a gaseous mixture including hydrogen and sources of Si and C atoms which are in the form of...
5612132 Chemical vapor deposition-produced silicon carbide having improved properties  
β-silicon carbide which is optically transmitting in the visible and infrared regions is produced by chemical vapor deposition. Deposition conditions are temperatures within a 1400°-1500° C....
5589116 Process for preparing a silicon carbide sintered body for use in semiconductor equipment  
A process for the preparation of a silicon carbide sintered body of high purity which has a content of 1 ppm or less of each atom harmful to the manufacture of semiconductor equipment including...
5571758 Nitrogen-reacted silicon carbide material  
A process for preparing a material includes preparing a preform having carbon particles and a carrier material. A first end of a wick, made of a material that is wetted by liquid silicon, is...
5465184 Hard disc drives and read/write heads formed from highly thermally conductive silicon carbide  
Silicon carbide is produced by chemical vapor deposition at temperatures from 1340°-1380° C., deposition chamber pressures of 180-200 torr, H2 /methyltrichlorosilane ratio of 4-10 and deposition...
5462800 Silicon carbide coated carbon composite material and method for making same  
A silicon carbide coated carbon matrix/carbon fiber composite material is provided. The carbon composite base material, coated with silicon carbide, comprises a siliconized layer and a...
5460759 Method of obtaining porous solids based on refractory carbide  
The disclosure teaches a method for obtaining porous solids of refractory carbide with a large specific surface area. An exclusively organic, polymeric and/or copolymerizable compound, for example...
5455212 In situ production of silicon carbide-containing ceramic composite powders  
A method for producing alumina-silicon carbide ceramic powders by in situ production of silicon carbide particles by introducing a pyrolyzable carbon source, preferably a gaseous hydrocarbon, into...
5449654 Manufacture of silicon carbide foam from a polyurethane foam impregnated with resin containing silicon  
The invention concerns a process for preparing a silicon carbide foam consisting of attacking a polyurethane foam with an alkaline solution, impregnating it, after rinsing and drying, with a...
5441799 Porous silicon carbide  
Silicon carbide sintered bodies having controlled porosity in the range of about 3-25 vol % are prepared from raw batches containing a multimodal distribution of silicon carbide particles and...
5427761 Process for the production of metal carbides having a large specific surface under atmospheric pressure inert gas scavenging  
A process for the production of a metal carbide having a BET specific surface area of 10 to 200 m2 /g, in which a reaction mixture including carbon having a specific surface area of at least 200...
5407750 High purity dense silicon carbide sintered body and process for making same  
A high purity and high density silicon carbide sintered body is made by controlling an amount of aluminum in an aluminum compound as a sintering additive from more than the solid solution upper...
5391524 Production of heavy metal carbides of high specific surface area  
A method of producing heavy metal carbides of high specific surface area characterised in that a compound in the gazeous state of said heavy metal is caused to react with reactive carbon having a...
5383421 Method for forming beta-silicon carbide whiskers, singly or in a matrix, using an organotitanium coordination compound catalyst  
Beta-silicon carbide whiskers of superior uniformity can be formed, either singly or in-situ in a matrix, by heating a source for silicon with a source of carbon (greater than 0 percent but less...
5380511 Process for producing silicon carbide-base complex  
A process for producing silicon carbide-base complex is disclosed. In the process of this invention, a silicon carbide-base complex is produced by means of depositing carbon produced by means of...
5366713 Method of forming p-type silicon carbide  
A method of forming p-type silicon carbide which comprises using reactive source gases comprising silane, hydrogen, trimethylboron, and either diborane or boron trifluoride, to thereby attain a...
5366941 Composite ceramics and their production process  
A composite ceramic material that is stable and shows a high strength in the temperature range of room temperature to 1600° C. as well as has a toughness high-enough to be used as structural...
5348718 Method and apparatus for producing carbride products  
A method and apparatus are provided for producing a product comprising a carbide compound, such as for example silicon carbide. A reactor is provided which has a chamber defined therein which is...
5342502 Method of preparing silicon carbide particles dispersed in an electrolytic bath for composite electroplating of metals  
A method for preparing silicon carbide particles dispersed in an electrolytic bath for composite electroplating of metals includes the steps of washing the silicon carbide particles with an...
5324494 Method for silicon carbide production by reacting silica with hydrocarbon gas  
A method is described for producing silicon carbide particles using a silicon source material and a hydrocarbon. The method is efficient and is characterized by high yield. Finely divided silicon...
5322822 Ultra-high-strength refractory silicon carbide fiber and process for producing same  
Ultra-high-strength refractory silicon carbide fiber having a decomposition temperature of not less than about 1800K, a breaking strength of not less than about 5 GPa, and a modulus of elasticity...
5318761 Process for preparing silicon carbide powder for use in semiconductor equipment  
A process for the preparation of a beta-silicon carbide powder of high purity which is suitable for use in the manufacture of semiconductor equipment and which has a content of 1 ppm or less of...
5298467 Granulated product composed of silicon carbide powder and silicon carbide ceramic formed therefrom  
A binder-containing granulated silicon carbide products for the manufacture of highly dense silicon carbide ceramic products and the SiC ceramic products which can be made from the novel...
5288444 Controlled resistivity ceramic fibers and process for making them  
Ceramic fibers formed by the pyrolysis of organosilicon preceramic polymers are provided with increased resistivity by treating the fibers in air at temperatures of less than 1,000° C. to oxidize...
5283044 Super heat-resistant silicon carbide fibers from poly-carbosilane  
A super heat-resistant silicon carbide fiber has an oxygen content of less than 0.1% by weight. In a process for producing the super heat-resistant silicon carbide fiber, a precursor fiber...
5265118 Silicon carbide whisker production apparatus  
A silicon carbide whisker production apparatus manufactured by placing a plurality of lidded reaction vessels in the longitudinal direction of an Acheson furnace at intervals, packing graphite...
5262235 Coated ceramic fiber system  
A ceramic fiber is provided with a plurality of coatings to define a system useful in making composite articles in the manufacture of which the fiber experiences applied stress such as thermal...
5258170 Process for producing silicon carbide platelets  
A process for producing silicon carbide platelets having a size of 20 μm or less, and the platelets so produced. The process comprises reacting particles of carbon from a source containing less...
5256448 Sol-gel method of making silicon carbide and of protecting a substrate  
Method of making a coherent film of silicon carbide on a surface, comprising forming a solution in the solvent of from 0.05 to 0.3 moles alkoxy silicon per mole of water, the solution also...
5252766 Method for producing polysilanes  
There is disclosed a method for producing a polysilane which comprises reacting a hydrosilane compound in the presence of an organolanthanoid complex.
5248483 Apparatus and methods for producing ceramic products  
An apparatus and methods are provided for producing ceramic products in a reactor so as to minimize deposits therein. The reactor has a chamber defined therein which is divided into a combustion...
5234675 Manufacturing sintered body of silicon carbide by using SiC whiskers in a multiple heating step process  
An organosilicon high molecular compound having a skeleton of silicon and carbon or a compound obtained by polymerization of an organometallic compound and the organosilicon high molecular...
5234674 Process for the preparation of metal carbides  
A process for the recovery of metal carbides from ferroalloys and nickel alloys of niobium, tantalum, vanadium, and hydrides thereof is disclosed. The selected ferroalloy or nickel alloy is...
5232951 Method of converting environmentally pollutant waste gases to methanol  
A continuous flow method and system is provided for converting environmentally pollutant by-product waste gases emitted during the manufacture of silicon carbide in a first manufacturing plant to...
5221526 Production of silicon carbide whiskers using a seeding component to determine shape and size of whiskers  
A process for producing silicon carbide whiskers in which a particulate form of carbon is combined with a silicon component, a boron component and seeding component to form a mixture which is then...
5202105 Method for making hexagonal silicon carbide platelets with the addition of a growth additive  
Crystalline silicon carbide wherein at least 90 weight percent of the silicon carbide is formed from a plurality of hexagonal crystal lattices wherein at least 80 weight percent of the crystals...
5200157 Susceptor for vapor-growth deposition  
The susceptor according to the present invention comprises a main body in the shape of a trapezoidal plate, and which has three circular depressions formed in its surface. The main body is made of...
5190737 High yield manufacturing process for silicon carbide  
A process for preparing silicon carbide by carbothermal reduction which includes transporting, in a gaseous medium, a particulate reactive mixture of a silica source and a carbon source through a...
5178847 Process for producing ceramic raw materials  
The invention relates to a process for the production of silicon ceramic whiskers and silicon ceramic powder from silicon fluoride and ammonia or a hydrocarbon, at an elevated temperature....
5173283 Platelets for producing silicon carbide platelets and the platelets so-produced  
A process for producing silicon carbide platelets having a size of 20 μm or less, and the platelets so produced. The process comprises reacting particles of a non-graphitizable form of hard carbon...
5167943 Titanium nitride coated silicon carbide materials with an interlayer resistant to carbon-diffusivity  
Finely divided silicon carbide materials, particularly powders, whiskers and short fibers, are provided with a titanium nitride surface coating by the process of (i) placing a low carbon...
5168014 Silicon carbide-reinforced light alloy composite material  
A silicon carbide-reinforced light alloy composite material comprises a matrix of a light weight alloy and a reinforcing material consisting of at least one of a silicon carbide whisker and a...
5164345 Al2 O3 /B4 C/SiC composite  
The processes of the invention involve the formation of an initial reactant mixture by combining sources of SiO2, B2 O3, aluminum, and carbon. The mixture may then optionally be shaped or...
5162269 Polycrystalline silicon carbide fibers  
This invention relates to the preparation of thermally stable, substantially polycrystalline silicon carbide ceramic fibers derived from a polycarbosilane resin. The unexpected thermal stability...
5128115 Manufacture of silicon carbide using solar energy  
A method is described for producing silicon carbide particles using solar energy. The method is efficient and avoids the need for use of electrical energy to heat the reactants. Finely divided...

Matches 151 - 200 out of 450 < 1 2 3 4 5 6 7 8 9 >