Ceramic powder material and method for manufacturing the same

Details Ceramic powder material and method for manufacturing the same Ceramic powder material and method for manufacturing the same

1979-09-21

1981-08-18

Carter, Herbert T.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 734, 106 735, 423344, C04B 3558, C04B 3550

Patent

active

042844320

ABSTRACT:
Ceramic powder material mainly consists of silicon nitride wherein the content of oxygen combined with generally unavoidable impurities as measured by activation analysis accounts for less than 2% by weight. The above-mentioned ceramic powder material can also be prepared preferably by the method which comprises the step of heating raw ceramic powder material mainly consisting of silicon nitride to 1,400.degree. C. to 1,900.degree. C. in the presence of a separately prepared nonsintered molding of ceramic material or sintered molding of ceramic material having a porosity of at least 10%.

REFERENCES:
patent: 3830652 (1974-08-01), Gazze
patent: 3969125 (1976-07-01), Koweya et al.
patent: 3992497 (1976-11-01), Terwilliger
patent: 4046580 (1977-09-01), Ishii et al.
patent: 4071371 (1978-01-01), Milberg et al.

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