TY - JOUR
T1 - Surface morphology and deuterium retention in tungsten and tungsten-rhenium alloy exposed to low-energy, high flux D plasma
AU - Alimov, V. Kh
AU - Hatano, Y.
AU - Sugiyama, K.
AU - Balden, M.
AU - Oyaidzu, M.
AU - Akamaru, S.
AU - Tada, K.
AU - Kurishita, H.
AU - Hayashi, T.
AU - Matsuyama, M.
N1 - Funding Information:
The authors would like to thank G. Matern (IPP Garching, Germany) for preparation and metallographic images of the W and W–5%Re samples, and J. Dorner and M. Fußeder (IPP Garching, Germany) for technical assistance with the 3 He beam analyses. This work was partly supported by the NIFS Collaboration Research Program ( NIFS13KUMR013 ) and the Japan Atomic Energy Agency as a part of Broader Approach Activities ( #25K286 ).
PY - 2014/8/19
Y1 - 2014/8/19
N2 - Surface topography and deuterium retention in polycrystalline hot-rolled W and W-5%Re have been examined after exposure to a low-energy (76 eV), high flux (around 1022 D/m2 s) deuterium plasma to an ion fluence of 1026 D/m2 at various temperatures. The methods used were confocal laser scanning microscopy and the D(3He, p)4He nuclear reaction at 3He energies varied from 0.69 to 4.0 MeV. During exposure to the D plasma at temperatures in the range from 348 to 673 K, small blisters of size in the range from about 1 to about 15 μm, depending on the exposure temperature, are formed on the W and W-5%Re surfaces. In the W-5%Re, the deuterium retention demonstrates its maximum at exposure temperature of 463 K, while in the W this maximum is shifted to 523 K. A difference in the temperature dependence of the D retention for the W and W-5%Re is explained, as a rough approximation, by temperature dependences of the ductility of these materials.
AB - Surface topography and deuterium retention in polycrystalline hot-rolled W and W-5%Re have been examined after exposure to a low-energy (76 eV), high flux (around 1022 D/m2 s) deuterium plasma to an ion fluence of 1026 D/m2 at various temperatures. The methods used were confocal laser scanning microscopy and the D(3He, p)4He nuclear reaction at 3He energies varied from 0.69 to 4.0 MeV. During exposure to the D plasma at temperatures in the range from 348 to 673 K, small blisters of size in the range from about 1 to about 15 μm, depending on the exposure temperature, are formed on the W and W-5%Re surfaces. In the W-5%Re, the deuterium retention demonstrates its maximum at exposure temperature of 463 K, while in the W this maximum is shifted to 523 K. A difference in the temperature dependence of the D retention for the W and W-5%Re is explained, as a rough approximation, by temperature dependences of the ductility of these materials.
UR - http://www.scopus.com/inward/record.url?scp=84906346895&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2014.07.064
DO - 10.1016/j.jnucmat.2014.07.064
M3 - 学術論文
AN - SCOPUS:84906346895
SN - 0022-3115
VL - 454
SP - 136
EP - 141
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -