Affiliation:
1. Agency for Defence Development
Abstract
An infiltration technique using W-Cu composite powder has been developed to enhance
microstructural uniformity of W-Cu pseudo-alloy. W-Cu composite powder, manufactured by
reduction from WO3 and CuO powder mixtures, were blended with W powder and then cold isostatically
pressed into a cylindrical bar under 150 MPa. The pressed samples were pre-sintered at
1300 oC for 1 hour under hydrogen to make a skeleton structure. This skeleton structure was more
homogeneous than that formed by using W and Cu powder mixtures. The skeleton structures were
infiltrated with Cu under hydrogen atmosphere. The infiltrated W-Cu pseudo-alloy showed
homogeneous microstructure without Cu rich region.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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