Method for producing a sintered silicon nitride base ceramic and

Details Method for producing a sintered silicon nitride base ceramic and Method for producing a sintered silicon nitride base ceramic and

1975-11-18

1977-01-25

Garvin, Patrick P.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 58, 106 62, 106 735, 106 65, 106 66, 106 733, 106 7333, 106 734, 264 65, C04B 3558, C04B 3502, C04B 3500, F27B 904

Patent

active

040049370

ABSTRACT:
A silicon nitride based ceramic is formed of silicon nitride and at least two metal oxides of such a type that when the metal oxides are heated separately they form a spinel. Combination of said metal oxides and said silicon nitride as fine powders and sintering same at a specified temperature for a specified period of time results in a silicon nitride based ceramic having improved mechanical and chemical properties.

REFERENCES:
patent: 3549402 (1970-12-01), Whitney et al.
patent: 3811928 (1974-05-01), Henney et al.
patent: 3833389 (1974-09-01), Komeya et al.
patent: 3876742 (1975-04-01), Bird
patent: 3903230 (1975-09-01), Kamigaito et al.
Kingery, Introduction to Ceramics, p. 40 (1967).
Formation and Reactivity of Nitrides III, Boron, Aluminum and Silicon Nitrides, by N. G. Coles et al., J. Appl. Chem., 1969, vol. 19, June.

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