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Title: Silicon nitride/silicon carbide composite powders

Patent ·
OSTI ID:242590

Silicon nitride-silicon carbide composite powders are prepared 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.

Assignee:
Dow Chemical Co., Midland, MI (United States)
Patent Number(s):
US 5,525,556/A/
Application Number:
PAN: 8-484,539
OSTI ID:
242590
Resource Relation:
Other Information: PBD: 11 Jun 1996
Country of Publication:
United States
Language:
English