Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 462, Issue 1-2, Pages 94-98Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2007.08.042
Keywords
electrode materials; mechanical milling; hot extrusion; electronic properties
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In this paper, W-40 wt.%Cu composites with high density, fine microstructure, and good properties have been obtained by hot extrusion from the powders milled for different times. The experimental results show that a homogenous structure containing very fine tungsten phases embedded in copper is formed after milling. After extrusion, the density and specific conductance of the composites decrease and the hardness increases with the increase of milling time. After annealing at 800 'C for 2 h, the specific conductance of the composites decreases from 61 % IACS to 44% IACS and the hardness increases from 215 to 255 HV with the rriilling time increases from 0 to 10 h. (c) 2007 Elsevier BX All rights reserved.
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