Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1990-09-14
1993-03-23
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
501 89, 501 92, C04B 3556
Patent
active
051963868
ABSTRACT:
A sintered ceramic composite body is manufactured by preparing a powdery mixture composed of a base material composed of either one of oxide ceramic such as alumina, mullite, magnesia, or the like, and nonoxide ceramic such as silicon nitride, sialon, or the like, and a reinforcement material composed of particles of silicon carbide which have a size of 1 .mu.m or less and a size ranging from 5 to 20 .mu.m, or have a size of 1 .mu.m or less and platelet silicon carbide particles having a maximum diameter ranging from 5 to 50 .mu.m and a thickness which is 1/3 or less of the maximum diameter, the particles of silicon carbide being contained at a volume ratio ranging from 10 to 50%. The powdery mixture is molded into a shaped product, which is then sintered in a temperature range from 1,400.degree. to 1,900.degree. C. for the base material which is composed of oxide ceramic or in a temperature range from 1,500.degree. to 2,000.degree. C. for the base material which is composed of nonoxide ceramic.
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Furuse Yutaka
Matsuhiro Keiji
Bell Mark L.
Jones Deborah
NGK Insulators Ltd.
The Tokyo Electric Power Company Incorporated
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