Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1995-06-07
1996-06-11
Group, Karl
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
501 97, 423344, 423345, 423409, C04B 35596, C04B 35577
Patent
active
055255566
ABSTRACT:
Prepare silicon nitride-silicon carbide composite powders by carbothermal reduction of crystalline silica powder, carbon powder and, optionally, crystalline silicon nitride powder. The crystalline silicon carbide portion of the composite powders has a mean number diameter less than about 700 nanometers and contains nitrogen. The composite powders may be used to prepare sintered ceramic bodies and self-reinforced silicon nitride ceramic bodies.
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Beaman Donald R.
Carroll Daniel F.
Cochran Gene A.
Dunmead Stephen D.
Eisman Glenn A.
Group Karl
The Dow Chemical Company
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