Method for synthesizing ultrafine powder materials

Details Method for synthesizing ultrafine powder materials Method for synthesizing ultrafine powder materials

1988-01-21

1988-09-06

Stallard, Wayland

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 05BA, 75 05BB, 75 05BC, 204164, 204177, 423344, 501 97, B22F 914

Patent

active

047690640

ABSTRACT:
A method for synthesizing ultrafine powder materials, for example, ceramic and metal powders, comprises admitting gaseous reactants from which the powder material is to be formed into a vacuum reaction chamber maintained at a pressure less than atmospheric and at a temperature less than about 400.degree. K. (127.degree.C.). The gaseous reactants are directed through a glow discharge provided in the vacuum reaction chamber to form the ultrafine powder material.

REFERENCES:
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patent: 3814893 (1974-06-01), Weissfloch et al.
patent: 4138306 (1979-02-01), Niwa
patent: 4206190 (1980-06-01), Harvey, II
patent: 4262631 (1981-04-01), Kubacki
patent: 4399115 (1983-08-01), Sato et al.
patent: 4568437 (1986-02-01), Dickson, Jr.
patent: 4610857 (1986-09-01), Ogawa et al.
Vogt et al., "Thermal Plasma Chemical Synthesis of Powders", Electrochemical Society, High Temperature Materials Chemistry III, Oct. 13-18, 1985, Los Alamos Report LA-UR-85-3495.

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