Process for making a silicon carbide composition

Details Process for making a silicon carbide composition Process for making a silicon carbide composition

1989-04-14

1990-08-14

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 95, 264 66, C04B 3556

Patent

active

049487612

ABSTRACT:
A process for pressing a ceramic composite which is comprised of alpha silicon carbide whiskers and alpha alumina oxide is disclosed. The composite material is blanketed with nitrogen, heated to a temperature of from about 1,250 to about 1,450 degrees centigrade, thereafter heated to a temperature of from about 1,650 to about 1,900 degrees centigrade while pressure on the system is increased, and thereafter maintained under specified temperature and pressure conditions for from about 30 to about 90 minutes.

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"Study of Solid-State Aluminothermal Reactions: Influence of Activation and Moderation Processes", George T. Hida (Thesis, Israel Institute of Technology, Haifa, Israel, Apr. 1987).

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