Process for forming high density silicon carbide

Details Process for forming high density silicon carbide Process for forming high density silicon carbide

1975-03-06

1976-12-21

Rutledge, L. Dewayne

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

423345, 264 66, 264 293, C04B 3552, C04B 3570

Patent

active

039986462

ABSTRACT:
High density sintered silicon carbide articles are formed by first forming a green blank or billet out of powdered silicon carbide, heat treating the billet to cause it to lightly sinter and become partially densified, shaping the billet to the desired final dimensions and configuration, and fully sintering and densifying the partially sintered shape by heat alone or by heat in the presence of silicon. The product of the process possesses high mechanical strength and may be very fine grained.

REFERENCES:
patent: 1916836 (1933-06-01), Haeuber
patent: 2964823 (1960-12-01), Fredriksson
patent: 3171871 (1965-03-01), Watson et al.
patent: 3275722 (1966-09-01), Popper
patent: 3495939 (1970-02-01), Forrest
patent: 3836673 (1974-09-01), Weaver
Popper, P., ed.; Special Ceramics 5; Rogers; M. G., "High-Pressure Slip Casting of Silicon Carbide," (1972) pp. 87-99.
Alliegro, R. A., et al., "Pressure Sintered Silicon Carbide," Journal of the American Ceramics Society, vol. 39, pp. 386-389, (1956).
Forrest, C. W. et al., "The Fabrication and Properties of Self-Bonded Silicon Carbide Bodies," Special Ceramics, vol. 5, pp. 99-123 (1972).

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