TUNGSTEN-COPPER COMPOSITE POWDER, COMPOSITE OXIDE POWDER AND METHOD FOR MAKING TUNGSTEN-COATED COPPER COMPOSITE POWDER AND METHOD FOR FORMING A HOMOGENEOUS W-CU PSEUDOALLOG

摘要

A high performance W-Cu composite powder is provided which is composed of individual particles having a tungsten phase and a copper phase wherein the tungsten phase substantially encapsulates the copper phase. The tungstencoated copper composite powder may be pressed and sintered into W-Cu pseudoalloy articles having a homogeneous distribution of W and Cu phases without experiencing copper bleedout or it may be used in ceramic metallization for the electronics industry.