Paper Title:
Preparation of W/Cu Functionally Graded Material
  Abstract

A W/Cu system functionally graded material (FGM), which may be used as plasma facing component for fusion reactors, was prepared by inserting W-Cu layers with gradient composition between tungsten and copper alloy plates. W-Cu gradient layers were hot-press sintered from W-Cu powder mixtures added with zinc powder as the sintering aid, whose relative density increased with sintering temperature, reaching a value higher than 96% at 850°C. XRD and SEM measurements showed that the sintered W-Cu gradient layers were the mechanical mixtures of W and Cu. A wholly dense W/Cu system FGM was then obtained at 850°C by hot-press, whose composition and structure changed gradually. The finite element method (FEM) calculation showed that the residual stresses in the W/Cu FGM were effectively reduced as compared with the directly-bonded W/Cu joint.

  Info
Periodical
Materials Science Forum (Volumes 631-632)
Edited by
Akira Kawasaki, Akinaga Kumakawa and Masayuki Niino
Pages
431-434
DOI
10.4028/www.scientific.net/MSF.631-632.431
Citation
C. B. Wang, H. Zeng, Y.G. Chen, Q. Shen, L. M. Zhang, "Preparation of W/Cu Functionally Graded Material", Materials Science Forum, Vols. 631-632, pp. 431-434, 2010
Online since
October 2009
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Price
$32.00
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