High-strength silicon nitride sintered body

Details High-strength silicon nitride sintered body High-strength silicon nitride sintered body

1996-07-10

1997-06-03

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

C04B 35587

Patent

active

056354320

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.

REFERENCES:
patent: 5006491 (1991-04-01), Ueda et al.
M. Asayama et al., The proceedings of the 1993 Annual Meeting of the Japan Ceramic Society, "The Effect of Halogen Impurities in Raw Powder on Mechanical Properties of Si.sub.3 N.sub.4 Sintered Bodies"--p. 611.
I. Tanaka et al., "High-Temperature Strength of Fluorine-Doped Silicon Nitride", Journal of the American Ceramic Society, vol. 77, No. 1 (1994), pp. 275-277.

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