Dense polycrystalline silicon carbide

Details Dense polycrystalline silicon carbide Dense polycrystalline silicon carbide

1975-10-06

1976-07-06

Douglas, Winston A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

106 44, 106 55, C04B 3556, C04B 3552, C04B 3514

Patent

active

039681947

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: 3468992 (1969-09-01), Lubatti et al.
patent: 3853566 (1974-12-01), Prochazka
patent: 3892523 (1975-07-01), Winter et al.

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