Process for production of sintered ceramic body

Details Process for production of sintered ceramic body Process for production of sintered ceramic body

1981-03-20

1985-12-03

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 62, 264 65, 264 66, 501 91, C04B 3552

Patent

active

045565260

ABSTRACT:
A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500.degree. to 2300.degree. C. in an environment of vacuum or inert gases, reducing gases or hydrocarbon gases, said copolymer comprising polycarbosilane blocks having a main-chain skeleton composed mainly of carbosilane units of the formula (Si--CH.sub.2) and zirconoxane units of the formula (Zr--O); and shaping the heated product, and simultaneously with, or after, the shaping of the heated product, sintering the shaped product at a temperature of from 800.degree. C. to 2300.degree. C. in an environment of vacuum or inert gases, reducing gases or hydrocarbon gases; and a sintered ceramic body consisting substantially of Si, Zr and C and optionally of O, said sintered body being composed substantially of

REFERENCES:
patent: 3485904 (1969-12-01), Ostrowski
patent: 3631139 (1971-12-01), Bauer et al.
patent: 3907954 (1975-09-01), Mansmann et al.
patent: 4127411 (1978-11-01), Yajima et al.
patent: 4158687 (1979-06-01), Yajima et al.
patent: 4289720 (1981-09-01), Yajima et al.
patent: 4387080 (1983-06-01), Hatta et al.
Japanese Patent Pub. 94314/78-English Abstract.
Japanese Patent Pub. 3815/79-English Abstract.
Japanese Patent Pub. 16521/79-English Abstract.

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