Silicon nitride/silicon carbide composite densified materials prepared using composite powders

Dunmead, Stephen D; Weimer, Alan W; Carroll, Daniel F; Eisman, Glenn A; Cochran, Gene A; Susnitzky, David W; Beaman, Donald R; Nilsen, Kevin J

Silicon nitride/silicon carbide composite densified materials prepared using composite powders

Patent · Tue Jul 01 00:00:00 EDT 1997

OSTI ID:871028

Dunmead, Stephen D ^[1]; Weimer, Alan W ^[1]; Carroll, Daniel F ^[1]; Eisman, Glenn A ^[1]; Cochran, Gene A ^[1]; Susnitzky, David W ^[1]; Beaman, Donald R ^[1]; Nilsen, Kevin J ^[1]

Midland, MI

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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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Assignee:: Dow Chemical Company (Midland, MI)

Patent Number(s):: US 5643843

Application Number:: 08/678199

OSTI ID:: 871028

Country of Publication:: United States

Language:: English

References (15)

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Silicon nitride/silicon carbide composite densified materials prepared using composite powders

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