Sintered dense silicon carbide

Details Sintered dense silicon carbide Sintered dense silicon carbide

1976-04-22

1977-01-25

Douglas, Winston A.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

264 65, C04B 3556

Patent

active

040049345

ABSTRACT:
A method of making a dense silicon carbide ceramic is disclosed involving the steps of homogeneously dispersing silicon carbide with a sufficient amount of a boron containing additive and a carbonaceous additive, forming the powder mixture into a shaped green body and then sintering the body in a controlled atmosphere and in the absence of external pressure at a temperature of about 1900.degree.-2100.degree. C. such that density of the body is at least 85% of the theoretical density of silicon carbide. The complex shaped silicon carbide product formed thereby is also disclosed.

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patent: 3808012 (1974-04-01), Bailey et al.
patent: 3852099 (1974-12-01), Prochazka
patent: 3853566 (1974-12-01), Prochazka

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