Microcomposite of metal carbide and ceramic particles
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-035/60
출원번호
US-0529783
(1983-09-06)
발명자
/ 주소
Brun Milivoj K. (Ballston Lake NY) Lee Minyoung (Schenectady NY) Szala Lawrence E. (Schenectady NY)
출원인 / 주소
General Electric Company (Schenectady NY 02)
인용정보
피인용 횟수 :
24인용 특허 :
2
초록▼
A particulate mixture of ceramic powder, free carbon and a hydride of a metal selected from the group consisting of hafnium, niobium, tantalum, titanium, vanadium, zirconium and mixtures thereof is hot pressed decomposing the hydride and reacting the resulting metal with carbon producing a polycryst
A particulate mixture of ceramic powder, free carbon and a hydride of a metal selected from the group consisting of hafnium, niobium, tantalum, titanium, vanadium, zirconium and mixtures thereof is hot pressed decomposing the hydride and reacting the resulting metal with carbon producing a polycrystalline microcomposite comprised of a continuous phase of the carbide of the metal which encapsulates at least about 20% by volume of the ceramic particles and which either encapsulates or is intermixed with the balance of said ceramic particles.
대표청구항▼
A process for producing a polycrystalline microcomposite consisting essentially of a continuous interconnecting phase of a carbide of a metal selected from the group consisting of hafnium, niobium, tantalum, titanium, vanadium, zirconium and mixtures thereof and a phase of ceramic particles, said ph
A process for producing a polycrystalline microcomposite consisting essentially of a continuous interconnecting phase of a carbide of a metal selected from the group consisting of hafnium, niobium, tantalum, titanium, vanadium, zirconium and mixtures thereof and a phase of ceramic particles, said phases being distributed at least significantly uniformly in said microcomposite, said microcomposite having a density greater than 95% of the theoretical density for said composite, which consists essentially of forming a particulate mixture of elemental or free carbon, a hydride of a metal selected from the group consisting of hafnium, niobium, tantalum, titanium, vanadium, zirconium and mixtures thereof, and a ceramic powder, hot pressing the particulate mixture under a pressure of at least about 200 psi at a temperature ranging from about 1200°C. to about 2000°C. decomposing said hydride of said metal producing said metal and by-product gas which vaporizes away and reacting said metal with said carbon producing the carbide of said metal as a continuous interconnecting phase, said continuous metal carbide phase encapsulating at least about 20% by volume of said ceramic particles and either encapsulating or being intermixed with the balance of said ceramic particles, said process having no significant effect on said ceramic particles, said continuous interconnecting metal carbide phase ranging from about 20% by volume to about 80% by volume of said microcomposite and the balance of said microcomposite consisting essentially of particles of said ceramic.
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이 특허에 인용된 특허 (2)
Lee Minyoung (Schenectady NY) Szala Lawrence E. (Scotia NY), Al2O3Ceramic composite.
Pastor Antonio C. (Santa Monica CA) Gentile Anthony L. (Thousand Oaks CA) Wysocki Joseph A. (Oxnard CA), Fabrication of rods of uniform high density from powders of refractory materials.
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