Si.sub.3 N.sub.4 -A1.sub.2 O.sub.3 composite sintered bodies and

Details Si.sub.3 N.sub.4 -A1.sub.2 O.sub.3 composite sintered bodies and Si.sub.3 N.sub.4 -A1.sub.2 O.sub.3 composite sintered bodies and

1990-07-23

1992-12-22

Morris, Theodore

Compositions: ceramic

Ceramic compositions

Refractory

501 98, C04B 3558

Patent

active

051734591

ABSTRACT:
An Si.sub.3 N.sub.4 -Al.sub.2 O.sub.3 composite sintered body suitable for use in high-temperature structural materials consists of .alpha.-Al.sub.2 O.sub.3 and at least one crystal phase of Si.sub.3 N.sub.4 and sialon and is produced by sintering a shaped body of a particular Si.sub.3 N.sub.4 -Al.sub.2 O.sub.3 mixed powder at 1,500.degree.-1,900.degree. C.

REFERENCES:
patent: 3903230 (1975-09-01), Kamigaito et al.
patent: 3991166 (1976-11-01), Jack et al.
Chemical Abstracts, vol. 107, No. 20, Nov. 16, 1987, p. 385, Abstract No. 182063f, Columbus, Ohio; and JP-A-62 187 174 (Japan Auto Parts Industries Assoc.), Aug. 15, 1987.

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