Paper Title:
Development of Tungsten Coatings for Application in Fusion Experiments
  Abstract

In the development of nuclear fusion into a future peaceful energy source, the scheme of magnetically confined fusion plasmas has experienced substantial progress in the last decades. Some of the main remaining materials issues are the high heat loads and the erosion of plasmafacing components by erosion from particle impact. Since component lifetime considerations and the negative influence of impurities on the plasma lead to opposite conclusions about the materials choice, an experimental investigation of the applicability of tungsten as plasma-facing material is currently performed at the tokamak fusion experiment ASDEX Upgrade in Garching, Germany. For this purpose an industrial scale method to coat graphite tiles with tungsten thin films was required. Therefore a comparative study of the heat load behaviour of coatings deposited with various PVD techniques was performed. Tungsten coatings on graphites and fiber reinforced carbons were investigated with respect to their properties relevant for fusion research including electron-beam loading with heat loads exceeding 20MW/m2.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
1377-1382
DOI
10.4028/www.scientific.net/MSF.475-479.1377
Citation
H. Maier, "Development of Tungsten Coatings for Application in Fusion Experiments", Materials Science Forum, Vols. 475-479, pp. 1377-1382, 2005
Online since
January 2005
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Gou, Ji Lei Zhu, Jun Guo Ran, Suang Feng Yan
Abstract:In order to improve the adhesion between diamond coatings and cemented tungsten carbide (WC-Co) substrates, the diamond coatings were...
1889
Authors: Shu Xiang Song, Zhang Jian Zhou, Juan Du, Zhi Hong Zhong, Chang Chun Ge
Abstract:Tungsten coatings with different interlayers onto the oxygen-free copper substrates were fabricated by atmosphere plasma spraying. The...
425
Authors: Zeng Yi, Xue Bin Zheng, Heng Ji, Wei Wu, Soo Wohn Lee
Abstract:The W coatings were prepared by applying the vacuum plasma spraying process (VPS). The phase composition, microstructure and laser...
849
Authors: V.L. Goncharov, Y.V. Lakhotkin, V.P. Kuzmin, Vladimir K. Alimov, J. Roth
Abstract:The physico-chemical fundamentals (thermodynamics, kinetics) of tungsten carbides crystallization process are presented. Chemically vapor...
62
Authors: Michael Rieth, Dave Armstrong, Bernhard Dafferner, Sylvia Heger, Andreas Hoffmann, Mirjam Diana Hoffmann, Ute Jäntsch, Christian Kübel, Edeltraud Materna-Morris, Jens Reiser, Magnus Rohde, Torsten Scherer, Verena Widak, Horst Zimmermann
Abstract:Refractory materials, in particular tungsten base materials are considered as primary candidates for structural high heat load applications...
11