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Tungsten/Copper Functionally Graded Materials: Possible Applications and Processing through the Powder Metallurgy Route

Journal Materials Science Forum (Volumes 534 - 536)
Volume Progress in Powder Metallurgy
Edited by Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages 1569-1572
DOI 10.4028/www.scientific.net/MSF.534-536.1569
Citation O. Ozer et al., 2007, Materials Science Forum, 534-536, 1569
Online since January, 2007
Authors O. Ozer, J.M. Missiaen, Celine Pascal, Sabine Lay, Jean Marc Chaix, Raphael Mitteau
Keywords Cu Liquid Migration, Functionally Graded Material (FGM), Oxide Reduction, Sintering, TG/DT Analysis
Abstract

Processing of W-Cu graded materials from attritor-milled W-CuO mixtures is described. The powder reduction steps are investigated by TG and XRD analyses and by microstructural observations (SEM, TEM). Sintering of reduced powder with different compositions is analysed by dilatometry. Sintering behaviour of the graded component processed by co-compaction of a 10/20/30wt%Cu multi-layer material is briefly discussed. Liquid Cu migration is observed and smoothes the composition gradient. Perspectives to control this migration are discussed.

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