Polycrystalline silicon carbide fibers

Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing

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501 87, 501 94, 501 95, 423344, 423345, C04B 3502, C04B 3552, C01B 3306, C01B 3136

Patent

active

051622696

ABSTRACT:
This invention relates to the preparation of thermally stable, substantially polycrystalline silicon carbide ceramic fibers derived from a polycarbosilane resin. The unexpected thermal stability of these fibers is achieved by the incorporation of boron prior to ceramification.

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patent: 4283376 (1981-08-01), Yajima et al.
patent: 4342712 (1982-08-01), Yajima et al.
patent: 4604367 (1986-08-01), Takamizawa et al.
patent: 4847027 (1989-07-01), Lu
patent: 5071600 (1991-12-01), Deleeuw et al.

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