Process for preparing ultrafine carbide powder

Details Process for preparing ultrafine carbide powder Process for preparing ultrafine carbide powder

1979-11-14

1981-06-30

Edmundson, F.

Chemistry of inorganic compounds

Silicon or compound thereof

Binary compound

204164, 204173, 423439, 423440, C01B 3136, C01B 3130

Patent

active

042762758

ABSTRACT:
A process for preparing ultrafine carbide powder of silicon or titanium and other carbide which are used as refractory materials comprises the steps of passing electric current to a carbon member held in contact with a material such as silicon in a vacuum vessel into which an inert gas at a desired pressure is introduced and collecting a carbide powder of the material fuming into the gas as a result of a high-temperature reaction between the material and carbon member in contact, thus producing carbide powder of ultrafine particles and of high-purity with high efficiency. A preheater facilitates the passing of electricity through the material by reducing the resistance thereof and leads to efficient preparation of the ultrafine carbide powder.

REFERENCES:
patent: 2149939 (1939-03-01), Kinzie et al.
patent: 4152194 (1979-05-01), Frosch
patent: 4153527 (1979-05-01), Greenewald
Kosolapova, Carbides, pp. 191-199, Pub. by Plenum Press (1971).

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