Method of producing a silicon carbide sintered body

Details Method of producing a silicon carbide sintered body Method of producing a silicon carbide sintered body

1979-02-02

1980-12-09

Cooper, Jack

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 65, 264344, 423345, 106 44, C01B 3136, C04B 3556

Patent

active

042384346

ABSTRACT:
A method of producing a silicon carbide sintered body is disclosed. The sintered body having a density of at least 2.4 g/cm.sup.3 is produced by preparing a mixture consisting mainly of silicon carbide with an average particle size of not more than 3.0 microns and a temporary binder, shaping the mixture into a green body and sintering the green body at a temperature of 1,750.degree. C.-2,100.degree. C. Before the sintering, silicon carbide is contacted with either hydrofluoric acid or anhydrous hydrofluoric acid and an atmosphere is held in a non-oxidizing state after the contact treatment up to the completion of the sintering.

REFERENCES:
patent: 3271109 (1966-09-01), Mezey et al.
patent: 4004934 (1977-01-01), Prochazka
patent: 4123286 (1978-10-01), Coppola et al.

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