Strengthening reaction sintered silicon nitride

Details Strengthening reaction sintered silicon nitride Strengthening reaction sintered silicon nitride

1976-01-30

1977-07-26

Poer, J.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 55, 106 735, 264 82, 264 60, 264 65, 264 66, C04B 3558, C04B 3570, F27B 904

Patent

active

040380920

ABSTRACT:
The strength of a reaction sintered silicon nitride body is substantially increased by impregnating the surface of the body with finely divided alumina and then firing the body in a nitrogen atmosphere to a temperature in excess of 1200.degree. C, the reaction being carried out under an appreciable partial pressure of SiO.

REFERENCES:
patent: 3222438 (1965-12-01), Parr et al.
patent: 3409417 (1968-11-01), Yates
patent: 3427373 (1969-02-01), Matsuo et al.
patent: 3535154 (1970-10-01), Meyer-Simon et al.
patent: 3639101 (1972-02-01), Washburn
patent: 3824120 (1974-07-01), Davildge et al.
patent: 3903230 (1975-09-01), Kamigaito et al.

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