Method of manufacturing a composite sintered body

Details Method of manufacturing a composite sintered body Method of manufacturing a composite sintered body

1994-12-19

1996-09-24

Group, Karl

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 97, 264 65, C04B 35571, C04B 35589

Patent

active

055590624

ABSTRACT:
An yttrium-containing composite powder for use as a material of a silicon nitride/silicon carbide composite sintered body is produced by thermally decomposing yttrium-containing polysilazane having an Si--N bond and an Si--C bond and an Si--O--Y bond and/or an N--O--Y bond in molecules thereof in an inert gas atmosphere or a vacuum at a temperature of at least 800.degree. C., and grinding the thermally decomposed yttrium-containing polysilazane.

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WPI Abstract No. 88-261836 of Japanese Patent 63-191832 (Sep. 26 1986).
Riedel, "Sintering of Amorphous Polymer-Derived Si, N and C Containing Composite Powders, " Journal of the European Ceramic Society, vol. 5., No. 2, pp. 113-122 (1989) Great Britain.
Seyferth et al., "High-Yield Synthesis of Si.sub.3 N.sub.4 /SiC Ceramic Materials by Pyrolysis of a Novel Polyorganosilazane," Journal of the American Ceramic Society, vol. 67, No. 7, pp. C132-C133 (1984) Columbus, Ohio.

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