Silicon nitride-based fibers and composite material reinforced w

Details Silicon nitride-based fibers and composite material reinforced w Silicon nitride-based fibers and composite material reinforced w

1991-07-18

1992-09-29

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501 92, 501 97, 264DIG19, C04B 3558

Patent

active

051513900

ABSTRACT:
Inorganic fibers having a high strength and a high modulus of elasticity at a high temperature are provided. The inorganic fibers are amorphous inorganic silicon nitirde-based fibers composed of silicon and nitrogen, optionally with oxygen, carbon and hydrogen, and having atomic ratio between above respective elements of N/Si=0.3 to 3, O/Si=up to 15, C/Si=up to 7 and H/Si=up to 15, wherein ratios of X-ray scattering intensity thereof to that of air at 1.degree. and 0.5.degree. are from 1 to 20 respectively and the silicon nitride-based fiber is still amorphous after heating in an inactive atmosphere at 1200.degree. C. for 1 hour. Composites of a metal, a ceramics, and a high molecular weight organic compound reinforced with the above fibers are also provided.

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Penn et al., "J. of Applied Polymer Science" vol. 27, 3751-3761 (1982).
Penn et al., I.E.C., "Proc. Des, Dev." vol. 23, No. 2, 217-220 (1984).
W. M. Scantlin, Inorganic Chemistry, 11 (1972).
A. Stock Ber. 54, p. 740 (1921).
"Jikken Kagaku Kohza (Experimental Chemistry Lectures) 4" Maruzen, K. K. pp. 269-298.

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