Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1977-11-07
1978-10-10
Vertiz, O. R.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 55, C04B 3558
Patent
active
041194756
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: 3992497 (1976-11-01), Terwilliger et al.
patent: 4017319 (1977-04-01), Greskovich et al.
Mitomo, M., "Pressure Switching of Si.sub.3 N.sub.4 ", Journal of Nat'l Science, 11 (1976), 1103-1107.
Charles Richard J.
Giddings Robert A.
Greskovich Charles D.
Prochazka Svante
Bell Mark
Binkowski Jane M.
Cohen Joseph T.
General Electric Company
Vertiz O. R.
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