Silicon nitride sintered bodies

Details Silicon nitride sintered bodies Silicon nitride sintered bodies

1990-03-01

1992-02-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501 97, 501102, 501103, 264 65, C04B 3558, F27B 910

Patent

active

050894498

ABSTRACT:
Silicon nitride sintered bodies including Si.sub.3 N.sub.4 and at least one element selected from Y.sub.2 O.sub.3, MgO, ZrO.sub.2. In the silicon nitride bodies, a J phase solid solution is present in an intergranular phase, which satisfies a relation of 0.65x.ltoreq.y.ltoreq.x+2 wherein y is an amount of J phase solid solution and x is an amount of Y.sub.2 O.sub.3 as an additive.

REFERENCES:
patent: 4801565 (1989-01-01), Matsui

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