High toughness silicon nitride sintered body and process for pro

Details High toughness silicon nitride sintered body and process for pro High toughness silicon nitride sintered body and process for pro

1985-08-21

1986-09-16

Lechert, Jr., Stephen J.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 87, 501 97, 264 56, 264 60, 264125, 264332, 156DIG64, 156DIG99, C04B 3502

Patent

active

046122966

ABSTRACT:
A high toughness silicon nitride sintered body comprises silicon nitride as a main component and at least one member selected from the group consisting of silicides and carbides in the form of plate particles, of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W. In the sintered body, the longer diameter d.sub.1 of principal plane of plate of the plate particles and the shorter diameter d.sub.2 of the same plane has a relation of d.sub.1 /d.sub.2 <10, and the thickness of plate of the plate particles is 1/5 or below of d.sub.2.

REFERENCES:
patent: 4440707 (1984-04-01), Shimamori et al.
patent: 4521525 (1985-06-01), Hsieh

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