Method of heat-treating silicon nitride sintered body

Details Method of heat-treating silicon nitride sintered body Method of heat-treating silicon nitride sintered body

1991-09-12

1992-10-27

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 98, 264 65, 264 66, 423344, C04B 3558

Patent

active

051589141

ABSTRACT:
In the method of heat-treating a silicon nitride sintered body which was produced from silicon nitride powder and sintering aid powder in order to provide it with an increased crystallinity, the silicon nitride sintered body is heat-treated in a non-oxidizing atmosphere under conditions such that the silicon nitride sintered body is embedded in at least one selected from the group consisting of powders of W, Mo, Ta, Re and carbides thereof.

REFERENCES:
patent: 4072532 (1978-02-01), Fletcher et al.
patent: 4466820 (1984-08-01), Clarke
patent: 4506021 (1985-03-01), Jack et al.
patent: 4830800 (1989-05-01), Thomas et al.
patent: 4892848 (1990-01-01), Yoshida et al.
patent: 4977112 (1990-12-01), Matsui
Journal of the American Ceramic Society, vol. 73, No. 5, May 1990, pp. 1443-1445.
Journal of Materials Science, vol. 26, No. 4, Feb. 1991, pp. 970-976.
Derwent Publications Abstract for JP 57140381.

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