Amorphous silicon oxycarbide coated silicon carbide or carbon fi

Details Amorphous silicon oxycarbide coated silicon carbide or carbon fi Amorphous silicon oxycarbide coated silicon carbide or carbon fi

1995-07-03

1997-02-04

Edwards, Newton

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428378, 428387, 428379, 428384, 428388, 501 39, 4234471, D02G 300

Patent

active

055996248

ABSTRACT:
Fibers having reduced surface roughness have a continuous coating of a silicone resin that undergoes pyrolysis in hydrogen or helium to form a hard, amorphous solid coat containing silicon, oxygen, and carbon. This silicon oxycarbide glass coating has exceptional high temperature strength and chemical stability compared to even vitreous silica. The coating is resistant to crystallization and oxidation at temperatures above 1000.degree. C.

REFERENCES:
patent: 4981820 (1991-01-01), Renlund et al.
patent: 5039635 (1991-08-01), Stempin et al.
patent: 5279780 (1994-01-01), Lipowitz et al.
patent: 5366943 (1994-11-01), Lipowitz et al.
patent: 5418194 (1995-05-01), Dawes et al.
"Gas Phase Reactions, Fibers and Whisker, Joining" by Shigeyuki Somiya and Yoshizo Inomata, Silicon Carbide Ceramics-2-1988-pp. 81-98.
"Silicon Oxycarbide Glasses:Part I. Preparation and Chemistry", G M Renlund, S. Prochazka, R H Doremus, J. Mat. Res., vol. 6, No. 12, Dec. 1991, pp. 2716-2722.
"Silicon Oxycarbide Glasses: Part II. Structure and Properties", G M Renlund, S. Prochazka, R H Doremus, J. Mat. Res., vol. 6, No. 12, Dec. 1991, pp. 2723-2733.

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