| 摘要 |
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 or platelet particles of silicon carbide which have a size ranging from 5 to 20 .mu.m, the particles of silicon carbide being contained at a volume ratio ranging from 3 to 50 %. The platelet particles have a maximum diameter ranging from 5 to 50 .mu.m and a thickness which is 1/3 or less of the maximum diameter. The powdery mixture is molded into a shaped product, which is then sintered in a temperature range from 1,400 to 1,900.degree.C for the base material which is composed of oxide ceramic or in a temperature range from 1,500 to 2,000.degree.C for the base material which is composed of nonoxide ceramic.
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