C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/6
C04B 35/56 (2006.01) C04B 35/565 (2006.01) C04B 35/575 (2006.01)
Patent
CA 1079309
BERYLLIUM CONTAINING SILICON CARBINE POWDER COMPOSITION ABSTRACT Disclosure is made of a suitable silicon carbide mixture which is prepared by mixture finely divided silicon carbide containing between about 0.5 and about 5.0 per cent by weight of excess carbon with a finely divided beryllium containing additive wherein the amount of beryllium in the mixture is equal in between about 0.03 to about 3.0 per cent by weight of the powder. A dense silicon carbide ceramic product may be prepared from the powder mixture by either but pressing the mixture at temperatures of between about 1900° and about 2200° C. at a pressure between about 1,000 to about 10.000 psi or by pressureless sintering wherein the article is imitially shaped and subsequently sintered at a temperature from about 1950° to about 2300° C.
289906
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