Sintering of silicon nitride using Mg and Be additives

Details Sintering of silicon nitride using Mg and Be additives Sintering of silicon nitride using Mg and Be additives

1977-01-03

1978-10-10

Douglas, Winston A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

106 735, 106 55, C04B 3558, C04B 3564

Patent

active

041196902

ABSTRACT:
A particulate dispersion of silicon nitride, magnesium additive and beryllium additive is formed into a green body and sintered at a temperature ranging from about 1800.degree. C to about 2200.degree. C in a sintering atmosphere of nitrogen at superatmospheric pressure producing a sintered body with a density ranging from about 80 to about 100%.

REFERENCES:
patent: 3953221 (1976-04-01), Lange
patent: 3999497 (1976-11-01), Terwilliger et al.
patent: 4017319 (1977-04-01), Greskovich et al.
Mitomo; M., "Pressure Sintering of Si.sub.3 N.sub.4 ", Journal of Materials Science, 11(1976), 1103-1107.

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