Silicon nitride based ceramic fibers, process of preparing same

Details Silicon nitride based ceramic fibers, process of preparing same Silicon nitride based ceramic fibers, process of preparing same

1989-03-02

1991-07-16

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 97, 525474, 525477, 528 25, 528 31, C04B 3502, C04B 3558, C08F28300, C08G 7704

Patent

active

050325515

ABSTRACT:
Silicon nitride based ceramic fibers containing Si, N, O and at least one metal M in amounts providing the atomic ratios N/Si of 0.3 to 3, O/Si of 0.0001 to 15 and M/Si of 0.001 to 5 and exhibiting an X-ray small angle scattering such that the ratio of the intensity of the small angle scattering of the fibers to that of air is 1 to 20. The ceramic fibers are produced by spinning of a polymetallosilazane into fibers and calcining the spun fibers and are useful as reinforcing fibers for composite artices having a metal or resin matrix.

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patent: 4762895 (1988-08-01), Chandra et al.
patent: 4818611 (1989-04-01), Arai et al.
Japanese Abstracts Aoki et al., 60-134025, "Heat Resistant Fiber and Its Production", Jul. 17, 1985.
Chemical Abstracts, vol. 104, No. 4: 114880h.
Chemical Abstracts, vol. 105, No. 18: 157761h.

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