Silicon nitride sintered body and method of producing the same

Details Silicon nitride sintered body and method of producing the same Silicon nitride sintered body and method of producing the same

1985-07-18

1987-10-13

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 97, 264 65, C04B 3558

Patent

active

046998900

ABSTRACT:
A highly dense Si.sub.3 N.sub.4 sintered body having a substantially crystalline intergranular phase, which has an improved mechanical strength at high temperatures and excellent static fatigue properties so as to be particularly useful for high temperature structural components or parts, is produced by sintering a molded body of a blend comprising Si.sub.3 N.sub.4, Y-, Mg- and Ce-compounds with a specified composition range.

REFERENCES:
patent: 4180410 (1979-12-01), Masaki
patent: 4280850 (1981-07-01), Smith et al.
patent: 4388414 (1983-06-01), Mangels et al.
patent: 4535063 (1985-08-01), Matsuhiro et al.
Giachello, A. et al. "Sintering and Properties of Silicon Nitride Containing Y.sub.2 O.sub.3 and MgO"-Ceramic Bull., 59(2), 1980, pp. 1212-1215.
Chemical Abstracts, vol. 90, (1979).
Chemical Abstracts, vol. 99, (1983).

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