After melting with the production manner of the tungsten - copper based compound powder and the production mannered null water soluble tungsten salt and copper

摘要

PROBLEM TO BE SOLVED: To provide a method of producing tungsten-copper composite powder for producing a tungsten-copper sintered alloy for a heat-radiation material, which has excellent sinterability without the addition of other components, and has excellent electrical and thermal conductivity.;SOLUTION: The production method includes: a stage where tungsten salt and copper salt dissolved into water, are thereafter subjected to spray drying, and are subsequently calcined to prepare compound oxide powder; a stage where tungsten salt is separately calcined to prepare tungsten oxide; a stage where the compound oxide powder of 20 to 75 wt.% and the tungsten oxide of 25 to 80 wt.% are mixed, and this mixture is subjected to ball milling to form ultra-fine tungsten-copper oxide powder; and a stage where the ultra-fine compound oxide powder is reduced.;COPYRIGHT: (C)2003,JPO