Sialon composition

Details Sialon composition Sialon composition

1991-06-27

1993-03-09

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501151, C04B 3558

Patent

active

051927209

ABSTRACT:
A process for heat-treating a composite material is disclosed. The composite material contains alumina, free silicon, and a beta-sialon material of the formula Si.sub.6-z Al.sub.z O.sub.z N.sub.8-z, wherein z is from 2.5 to 3.5. In the heat treatment process, the composite material is subjected to temperatures of 800-1,000 degrees centigrade, 1,240 to 1,260 degrees centigrade, and 1,400 to 1,450 degrees centigrade for various times and under specified conditions.

REFERENCES:
patent: 4243621 (1981-01-01), Mori et al.
patent: 4365022 (1982-12-01), Tabata et al.
patent: 4957885 (1990-09-01), Hida
patent: 4990295 (1991-02-01), Hida
patent: 5006290 (1991-04-01), Hida
Hida, Solid-State Aluminothermal Reactions: Influence of Activation and Moderation Processes, Apr. 1987.

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