METHOD OF PRODUCING NANOPHASE WC-BASED POWDER BY VAPOR PHASE REACTION AT ATMOSPHERIC PRESSURE

摘要

PROBLEM TO BE SOLVED: To provide a method of producing nanophase WC powder of a several tens nm grade used as materials, e.g., for high-strength and wear-resistance cemented carbide.;SOLUTION: The production method comprises preparing a precursor containing tungsten; producing gas by vaporizing said precursor in a reactor 5; and carburizing said vaporized precursor in a non-oxidizing atmosphere. The nanophase WC powder produced as such has high-strength and excellent wear-resistance, which can be suitably used as materials for carbide tools, carbide cement, wear-resistance components, or metal molds.;COPYRIGHT: (C)2005,JPO&NCIPI