Process for producing Si.sub.3 N.sub.4 article

Details Process for producing Si.sub.3 N.sub.4 article Process for producing Si.sub.3 N.sub.4 article

1977-03-23

1978-07-18

Cooper, Jack

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264DIG19, 106 735, 423344, C01B 2106

Patent

active

041016165

ABSTRACT:
Si.sub.3 N.sub.4 fibrous articles are produced by forming a low density compact of amorphous Si.sub.3 N.sub.4 powder and heat treating the compact to promote in-situ formation of fibrous crystalline alpha Si.sub.3 N.sub.4. Such articles are useful as thermal insulants, packing materials, resilient seals, etc.

REFERENCES:
patent: B581564 (1976-03-01), Jacobson
patent: 3084998 (1963-04-01), Dess
patent: 3399979 (1968-09-01), Hamling
Mazdiyasni et al., "J. Am. Ceram. Soc. 56", pp. 628-633, 1973.

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