Dense polycrystalline silicon carbide

Details Dense polycrystalline silicon carbide Dense polycrystalline silicon carbide

1974-01-08

1976-06-01

Douglas, Winston A.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

C04B 3556, C04B 3558

Patent

active

039605779

ABSTRACT:
A dense silicon carbide material having improved electrically conducting properties is disclosed which is prepared by forming a homogeneous dispersion of silicon carbide, a sufficient amount of a boron containing additive, and 3.5-10.0% by weight of silicon nitride and hot pressing the dispersion at a sufficient temperature and pressure whereby a dense substantially nonporous ceramic is formed. The silicon carbide material can be machined by electrical discharge machining or by electrochemical machining.

REFERENCES:
patent: 2609318 (1952-09-01), Swentzel
patent: 2992960 (1961-07-01), Leeg et al.
patent: 3291623 (1966-12-01), Saunders et al.
patent: 3329514 (1967-07-01), Saunders et al.
patent: 3853566 (1974-12-01), Prochozka

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