Silicon carbide sintered body

Details Silicon carbide sintered body Silicon carbide sintered body

1980-11-05

1984-06-19

Bell, Mark

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 88, C04B 3556

Patent

active

044553854

ABSTRACT:
A silicon carbide sintered body characterized by its microstructural stability at high temperatures is produced by forming a mixture of .beta.-silicon carbide powder, .alpha.-silicon carbide seeding powder, boron additive and a carbonaceous additive into a green body and sintering it to produce a sintered body with a density of at least 80% wherein at least 70% by weight of the silicon carbide is .alpha.-silicon carbide.

REFERENCES:
patent: 3649310 (1972-03-01), Yates
patent: 3649342 (1972-03-01), Bartlett
patent: 3725099 (1973-04-01), Nozik
patent: 3853566 (1974-12-01), Prochazka
patent: 4179299 (1979-12-01), Coppola et al.
patent: 4312954 (1982-01-01), Coppola et al.
Prochazka et al., "Investigation of Ceramics for High-Temperature Turbine Vanes", Final Report for Contract H62269-73-C-O356, Submitted to the Naval Air Development Center by General Electric Co., Apr. 1974.

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