Binary beryllium–tungsten mixed materials

Both Be and W are planned as wall materials for ITER. Although these materials will dominate the ITER first wall, and despite the fact that their interaction during operation will be dominated by surface processes, mostly bulk material data on the Be–W binary system are available. This article descr...

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Bibliographic Details
Published in:Journal of nuclear materials 2007-06, Vol.363-365, p.1129-1137
Main Authors: Linsmeier, Ch, Ertl, K., Roth, J., Wiltner, A., Schmid, K., Kost, F., Bhattacharyya, S.R., Baldwin, M., Doerner, R.P.
Format: Article
Language:English
Subjects:
Applied sciences
Beryllium
Controled nuclear fusion plants
Diffusion
Energy
Energy. Thermal use of fuels
Exact sciences and technology
First wall
Installations for energy generation and conversion: thermal and electrical energy
Surface analysis
Tungsten
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Summary:Both Be and W are planned as wall materials for ITER. Although these materials will dominate the ITER first wall, and despite the fact that their interaction during operation will be dominated by surface processes, mostly bulk material data on the Be–W binary system are available. This article describes investigations of thin films of Be deposited on W, the inverse system (W films on Be), as well as experiments where W surfaces are exposed to a Be-seeded deuterium plasma. The formed alloy phases Be2W and Be12W are identified by X-ray photoelectron spectroscopy (XPS) and depth profile data both from sputter-XPS and MeV ion beam analysis are presented.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2007.01.224