Process for making silicon carbide ceramic fibers

Details Process for making silicon carbide ceramic fibers Process for making silicon carbide ceramic fibers

1992-02-21

1994-10-11

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 66, 26421117, C04B 3569, D01F 102

Patent

active

053545273

ABSTRACT:
A method for forming a polycrystalline ceramic fiber which comprises blending about 5 to about 25 weight percent polymer, about 70 to about 95 weight percent silicon carbide powder and greater than 1 weight percent sintering aid; forming a fiber from the blend; and sintering the formed fiber. Preferably, the sintering aid is boron carbide. In addition, the fiber is preferably pre-sintered at a first temperature of from about 1700.degree. C. to 2300.degree. C. and then subsequently sintered at a second temperature of approximately 2000.degree. C. to about 2300.degree. C.

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Polymer-Derived Ceramic Fibers, Jonathan Lipowitz Ceramic Bull vol. 70, No. 12, 1991.
Crystalline Silicon Carbide Fibers Derived From Organosilicon Polymers-Jonathan Lipowitz.

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