Sintering of silicon nitride with Be additive

Details Sintering of silicon nitride with Be additive Sintering of silicon nitride with Be additive

1981-08-27

1983-02-22

Parrish, John A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264332, 501154, C04B 3558

Patent

active

043747922

ABSTRACT:
A compact composed of a mixture of silicon nitride with less than about 0.5 weight % cation impurities and containing beryllium additive, and having an oxygen content of at least about 1.4 weight %, is sintered from 1900.degree. C. to 2200.degree. C. in nitrogen at superatmospheric pressure producing a sintered compact of at least about 80% density.

REFERENCES:
patent: 4119689 (1978-10-01), Prochazka
patent: 4119690 (1978-10-01), Prochazka

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