TY - JOUR
T1 - Deuterium retention in VPS-W coated vanadium alloy (V-4Cr-4Ti)
AU - Ueda, Yoshio
AU - Uekita, Kazuhiro
AU - Oya, Makoto
AU - Ohtsuka, Yusuke
AU - Nagasaka, Takuya
AU - Kasada, Ryuta
AU - Kimura, Akihiko
AU - Tokunaga, Tomonori
AU - Yoshida, Naoaki
PY - 2013
Y1 - 2013
N2 - D retention in a VPS W coated V alloy (V-4Cr-4Ti, NIFS Heat 2) was investigated by an ion beam irradiation with a HiFIT device. Irradiation temperature changed from 473 K to 773 K and ion fluence was 1024 m 2. In addition, during ion irradiation atmospheric pressure was 0.5 mTorr. It was found that ambient gas absorption was the dominant process for D retention. Ion irradiation could enhance gas absorption probably due to surface modification (oxide layer removal) and could produce ion induced trapping sites. Although these ion induced processes can be avoided by W coating layers, D retention is still significant for VPS-W coated V alloy. D trapping could be done mainly in V-alloy and its mechanisms could be related to some intrinsic defects in V alloy and formation of titanium hydride at elevated temperature.
AB - D retention in a VPS W coated V alloy (V-4Cr-4Ti, NIFS Heat 2) was investigated by an ion beam irradiation with a HiFIT device. Irradiation temperature changed from 473 K to 773 K and ion fluence was 1024 m 2. In addition, during ion irradiation atmospheric pressure was 0.5 mTorr. It was found that ambient gas absorption was the dominant process for D retention. Ion irradiation could enhance gas absorption probably due to surface modification (oxide layer removal) and could produce ion induced trapping sites. Although these ion induced processes can be avoided by W coating layers, D retention is still significant for VPS-W coated V alloy. D trapping could be done mainly in V-alloy and its mechanisms could be related to some intrinsic defects in V alloy and formation of titanium hydride at elevated temperature.
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U2 - 10.1016/j.jnucmat.2013.01.248
DO - 10.1016/j.jnucmat.2013.01.248
M3 - Article
AN - SCOPUS:84885483500
SN - 0022-3115
VL - 438
SP - S1125-S1128
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - SUPPL
ER -