Deuterium retention in tungsten based materials for fusion applications
Keywords: 
Deuterium retention
Tungsten heavy alloy
Tungsten self-passivating alloy
Nuclear reaction analysis
Thermal desorption
Issue Date: 
2019
Publisher: 
Elsevier BV
ISSN: 
2352-1791
Note: 
Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
Citation: 
Maier, H. (H.); Schwarz-Selinger, T. (T.); Neu, R. (R.); et al. "Deuterium retention in tungsten based materials for fusion applications". Nuclear Materials and Energy. 18 (2019), 2019, 245 - 249
Abstract
The tungsten “heavy alloy” HPM 1850, a liquid-phase sintered composite material with two weight percent Ni and one weight percent Fe, as well as the self-passivating tungsten alloy W-10Cr-0.5Y, a high temperature oxidation resistant alloy with 10 weight percent of Cr and 0.5 weight percent of Y, were investigated with respect to their deuterium retention. The samples were deuterium loaded in an electron cyclotron resonance plasma up to a fluence of 1025m−2. The deuterium retention was then investigated by Nuclear Reaction Analysis and by Thermal Desorption. In HPM 1850 the observed deuterium amount was similar to pure tungsten, however the outgassing behaviour during thermal desorption was considerably faster. In W-10Cr-0.5Y the released deuterium amount during thermal desorption was about one order of magnitude higher; by comparison of nuclear reaction analysis and thermal desorption this was attributed to deeper diffusion of deuterium into the bulk of the material.

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