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US 5,635,432 AGranted
High-strength silicon nitride sintered body
AssigneeNGK Insulators, Ltd.
InventorsToshihiko Honda, Hisayoshi Nonaka
Life of this patent
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Abstract
A high-strength silicon nitride sintered body wherein the halogen element content in the silicon nitride sintered body is 200 ppm or higher. The silicon nitride sintered bodies have high strength at near room temperature. Therefore, such sintered bodies may be used favorably as a structural material for mechanical parts and the like, such as sliding members, whose strength at near room temperature is important.
Claims4
A silicon nitride sintered body consisting essentially of silicon nitride and a sintering additive, which body contains a halogen element content of 200 ppm or above.
Dependencies are inferred from the claim text.