Production process for silicon nitride sintered body

Details Production process for silicon nitride sintered body Production process for silicon nitride sintered body

1992-04-20

1993-05-25

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 97, C04B 3558

Patent

active

052140075

ABSTRACT:
A process for producing silicon nitride sintered body of this invention comprises a) molding raw material powder mainly comprising silicon nitride powder and beta-silicon nitride whiskers; and b) sintering molded body obtained. The silicon nitride sintered body produced by the process of this invention is highly sinterable and dense and has excellent toughness.

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Singh et al., "Fracture Toughness and Strength of SiC-Whisker-Reinforced Si.sub.3 Ny Composites", Advanced Ceramics Materials, 3[4], pp. 357-360 (1988).
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"Whiskers", George A. Hoffman, Journal of Melts, pp. 591-595.

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