Silicon carbide-boron carbide carbonaceous body

Details Silicon carbide-boron carbide carbonaceous body Silicon carbide-boron carbide carbonaceous body

1984-01-16

1985-05-21

Williams, Howard S.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 91, 264 65, C04B 3556

Patent

active

045187029

ABSTRACT:
The carbonaceous body of the invention is prepared by shaping and sintering uniform powdery mixture composed of a powder of a low-temperature coke, a powder of boron carbide and a powder of silicon carbide in such a proportion that the weight proportion of the boron carbide and the silicon carbide is in the range from 2:98 to 80:20 and the volume proportion of the coke powder and the combination of the boron carbide and silicon carbide is in the range from 50:50 to 95:5. The carbonaceous body thus obtained is highly resistant against air oxidation even at a temperature of 1400.degree. C. in addition to the outstandingly high mechanical strengths in comparison with conventional carbonaceous shaped materials such as artificial graphite.

REFERENCES:
patent: 4067743 (1978-01-01), Arabei et al.
patent: 4081284 (1978-03-01), Prochazka et al.
patent: 4179299 (1979-12-01), Coppola et al.
patent: 4312954 (1982-01-01), Coppola et al.
patent: 4336216 (1982-06-01), Watanabe et al.

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