Influence of the microstructure on the deuterium retention in tungsten

The microstructure of tungsten samples is systematically modified by recrystallization to investigate the structure dependence of deuterium (D) retention. After a thorough characterization by scanning and transmission electron microscopy, non-recrystallized samples and samples recrystallized by diff...

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Bibliographic Details
Published in:Journal of nuclear materials 2011-08, Vol.415 (1), p.S632-S635
Main Authors: Manhard, A., Schmid, K., Balden, M., Jacob, W.
Format: Article
Language:English
Subjects:
Applied sciences
Controled nuclear fusion plants
Crystallites
Deuterium
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
Implantation
Installations for energy generation and conversion: thermal and electrical energy
Microstructure
Nuclear fuels
Nuclear reactions
Recrystallization
Scanning electron microscopy
Tungsten
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Summary:The microstructure of tungsten samples is systematically modified by recrystallization to investigate the structure dependence of deuterium (D) retention. After a thorough characterization by scanning and transmission electron microscopy, non-recrystallized samples and samples recrystallized by different degrees are loaded with deuterium in a low-temperature plasma device. The deuterium inventory is measured by nuclear reaction analysis and thermal desorption spectroscopy. The post implantation surface morphology is investigated by scanning electron, optical and atomic force microscopy. The modification by recrystallization allows a wide variation in the crystallite size and has a strong impact on the measured D retention. Both the total amount and the binding state of the retained D are changed.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2010.10.045