Method of producing silicon carbide articles

Details Method of producing silicon carbide articles Method of producing silicon carbide articles

1982-06-18

1985-04-23

Meros, Edward J.

Coating processes

Heat decomposition of applied coating or base material

Base material decomposed or carbonized

427228, 427249, 423345, 423346, 501 88, 501 90, B05D 310, C23C 1108, C04B 3554, C04B 3580

Patent

active

045130302

ABSTRACT:
A method of producing articles comprising reaction-bonded silicon carbide (SiC) and graphite (and/or carbon) is given. The process converts the graphite (and/or carbon) in situ to SiC, thus providing the capability of economically obtaining articles made up wholly or partially of SiC having any size and shape in which graphite (and/or carbon) can be found or made. When the produced articles are made of an inner graphite (and/or carbon) substrate to which SiC is reaction bonded, these articles distinguish SiC-coated graphite articles found in the prior art by the feature of a strong bond having a gradual (as opposed to a sharply defined) interface which extends over a distance of mils. A method for forming SiC whisker-reinforced ceramic matrices is also given. The whisker-reinforced articles comprise SiC whiskers which substantially retain their structural integrity.

REFERENCES:
patent: 3205043 (1965-09-01), Taylor
patent: 3269802 (1966-08-01), Wainer et al.
patent: 3369920 (1968-02-01), Bourdeau et al.
patent: 3622272 (1971-11-01), Shyne et al.
patent: 3653851 (1972-04-01), Gruber
patent: 3991248 (1976-11-01), Bauer
patent: 3994822 (1976-11-01), De Bacci et al.
Carbon, 12, No. 1, 358-362 (Jan. 1974).
J. Am. Cer. Soc., 33, No. 12, 353-360 (12/1/50).
"Refel-Self Bonded Silicon Carbide", U.K.A.E.A. Reactor Group, Sep. 1973.

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