Silicon nitride/silicon carbide composite densified materials prepared using composite powders
Patent
·
OSTI ID:871028
- 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.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- 86X-SK761C
- 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
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self-reinforced
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nitride powder
silicon nitride
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crystalline silicon
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