C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/128
C04B 35/56 (2006.01) C04B 35/565 (2006.01)
Patent
CA 1122384
N3-8a BERYLLIUM CONTAINING SILICON CARBIDE POWDER COMPOSITION ABSTRACT A sinterable silicon carbide mixture is described which is prepared by mixing finely-divided silicon carbide contain- ing between about 0.5 and about 5.0 percent by weight of excess carbon with a finely-divided beryllium-containing additive wherein the amount of beryllium in the mixture is equal to between about 0.03 and about 1.5 percent by weight of the powder. A dense silicon carbide ceramic product is prepared from the powder mixture by pressureless sintering wherein the article is initially shaped and subsequently sintered in a beryllium-containing atmosphere at a temperature from about 950° to about 2300°C.
329041
Fetherstonhaugh & Co.
Kennecott Corporation
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