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US 7,118,724 B2Granted
Method of producing nanophase WC powder by vapor phase reaction
AssigneeKorea Institute of Machinery & Materials
InventorsByung Kee Kim, Jin Chun Kim, Gook Hyun Ha, Chul Jin Choi
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Abstract
Nanophase WC powder is produced by preparing a precursor including tungsten; producing gas by vaporizing or sublimating the precursor; carbonizing the gas in the atmosphere without oxygen while maintaining pressure below atmospheric pressure; and condensing the carbonized gas
Claims10
A method of producing nanophase WC powder by vapor phase reaction, which comprises the steps of preparing a precursor including tungsten;
- producing gas by vaporizing or sublimating said precursor;
- carbonizing said gas in the atmosphere without oxygen while maintaining pressure below atmospheric pressure;
- and condensing said carbonized gas.
Dependencies are inferred from the claim text.