High strength silicon nitride

Details High strength silicon nitride High strength silicon nitride

1988-03-08

1989-09-26

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 98, 501152, C04B 3558

Patent

active

048700363

ABSTRACT:
An improved silicon nitride material characterized by high mechanical strength at high temperatures comprising a combination of approximately 0.5-6.0% by weight of strontium oxide, 2.0-12% by weight of yttrium oxide and the balance silicon nitride. The improved material is densified by either an encapsulated hot isostatic pressing method or an encapsulated sinter/HIP method and can be utilized to form near net shape articles.

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