Patent
Composite article and method of making same
TLDR
In this article, a method of composite article and a composite article specifically adapted for use in high temperature, corrosive and errosive environments comprising a carbon fibrous substrate, including a pyrolytic carbon sheath formed about each fiber of the substrate; a metallic carbide, oxide, or nitride compliant coating over the coated fibers of the substrates; and an impermeable metallic carbides, oxide or nitric outer protective layer formed about the entire periphery of the coated substrate.Abstract:
A method of making a composite article and a composite article specifically adapted for use in high temperature, corrosive and errosive environments comprising a carbon fibrous substrate, including a pyrolytic carbon sheath formed about each fiber of the substrate; a metallic carbide, oxide, or nitride compliant coating over the coated fibers of the substrate; and an impermeable metallic carbide, oxide or nitride outer protective layer formed about the entire periphery of the coated substrate. In accordance with the method of the invention, the compliant metallic coating is applied to the fibers in a manner such that any mechanical stresses built-up in the substrate due to a mismatch between the coefficient of thermal expansion of the fibrous substrate and the coating are effectively accomodated.read more
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Carbon fibrils, method for producing same and compositions containing same
TL;DR: In this paper, the fibrils of this invention may be produced by contacting for an appropriate period of time and at a suitable pressure a suitable metal-containing particle with a suitable gaseous, carbon-containing compound, at a temperature between about 850°C and 1200°C.
Patent
METHOD FOR ACHIEVING IMPROVED EPITAXY QUALITY (SURFACE TEXTURE AND DEFECT DENSITY) ON FREE-STANDING (ALUMINUM, INDIUM, GALLIUM) NITRIDE ((Al,In,Ga)N) SUBSTRATES FOR OPTO-ELECTRONIC AND ELECTRONIC DEVICES
Jeffrey S. Flynn,George R. Brandes,Robert P. Vaudo,David Keogh,Xueping Xu,Barbara E. Landini +5 more
TL;DR: In this paper, the authors describe a III-V nitride homoepitaxial microelectronic device structure comprising a 3-v nitride epi layer on a substrate, e.g., of freestanding character.
Patent
Composite materials and methods for making the same
Kennedy Christopher R,Birol Sonuparlak,Ali Syed Fareed,John Edward Garnier,Gerhard Hans Schiroky +4 more
TL;DR: In this paper, the getterer materials are added to the composite body which gather or scavenge undesirable oxidants which may enter the composite composite body, such that any undesirable oxidant approaching, for example, a fiber reinforcement would be scavenged by (e.g., reacted with) the getter materials.
Patent
Carbon composite article and method of making same
TL;DR: In this paper, a composite structural ceramic article and method of fabrication thereof is described, which is specifically designed for use in high temperature, corrosive and erosive environments such as those found in heat engines, heat exchangers, stationary power equipments and industrial process equipments.
Patent
Multiple-propellant air vehicle and propulsion system
TL;DR: In this article, a propulsion system and a method having means for cooling the combustor liner and throat liner of a rocket casing by endothermic pyrolysis of a hydrocarbon fuel in the fuel passageway is presented.
References
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Patent
Silicon carbide coated graphite members and process for producing the same
Elmer G Fatzer,Edgar L Kochka +1 more
TL;DR: A preferred process for producing coated isotropic graphite members comprises: A. HEAT TREATING the ISOTROPIC GRAPHITE MEMBER to a TEMPERATURE from about 1700*C to 2400*C in a halogen atmosphere comprising chlorine or fluorine to reduce the impurity ash content to the range of the order to 2 to 10 ppm, B. ULTRASONICALLY CLEANING the MACHINED graphite BODY in a LIQUID CLEANing FLuid to REMOVE LOOSE SURFACE PARTICLES, D
Patent
Method of making molten silicon infiltration reaction products and products made thereby
TL;DR: In this paper, a mixture of molten silicon and certain blends of particulated carbon and various particulated inorganic materials substantially unreactive to molten silicon, such as boron nitride particles, are provided.
Patent
Composite silicon carbide/silicon nitride coatings for carbon-carbon materials
TL;DR: In this article, a multilayer coating system for the protection of carbon-carbon composites is described, which includes an inner layer of SiC (produced by a conversion process in which Si is diffused into the carbon substrate) and an outer layer of CVD (chemically vapor deposited) Si3 N4.
Patent
Silicon carbide filaments and method
Harold E. Debolt,Thomas W. Henze +1 more
TL;DR: In this article, a silicon carbide filament containing an inner and outer surface layer of carbon rich silicon carbides, together with a method of making the same, is described, and a method to make the same is described.
Patent
Fiber reinforced carbon and graphite articles and a method of producing said articles
TL;DR: Fiber reinforced carbon and graphite as discussed by the authors articles are characterized by a matrix of fibrous carbon material bonded together by a deposited pyrolytic material and having the residue of a carbonized filler material dispersed within the article.