Yttrium-containing composite powder, composite sintered...

C - Chemistry – Metallurgy – 04 – B

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C04B 35/58 (2006.01) C04B 35/589 (2006.01) C08G 77/62 (2006.01)

Patent

CA 2138489

An yttrium-containing composite powder for use as a material of a silicon nitride/silicon carbide composite sin- tered body is produced by thermally decomposing yttrium-con- taining 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°C, and grinding the thermally decomposed yttrium- containing polysilazane.

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