Deuterium retention in VPS-W coated vanadium alloy (V-4Cr-4Ti)

Yoshio Ueda; Kazuhiro Uekita; Makoto Oya; Yusuke Ohtsuka; Takuya Nagasaka; Ryuta Kasada; Akihiko Kimura; Tomonori Tokunaga; Naoaki Yoshida

doi:10.1016/j.jnucmat.2013.01.248

Deuterium retention in VPS-W coated vanadium alloy (V-4Cr-4Ti)

Yoshio Ueda, Kazuhiro Uekita, Makoto Oya, Yusuke Ohtsuka, Takuya Nagasaka, Ryuta Kasada, Akihiko Kimura, Tomonori Tokunaga, Naoaki Yoshida

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	S1125-S1128
Journal	Journal of Nuclear Materials
Volume	438
Issue number	SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.248
Publication status	Published - Jan 1 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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title = "Deuterium retention in VPS-W coated vanadium alloy (V-4Cr-4Ti)",

abstract = "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.",

author = "Yoshio Ueda and Kazuhiro Uekita and Makoto Oya and Yusuke Ohtsuka and Takuya Nagasaka and Ryuta Kasada and Akihiko Kimura and Tomonori Tokunaga and Naoaki Yoshida",

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doi = "10.1016/j.jnucmat.2013.01.248",

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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 - 2013/1/1

Y1 - 2013/1/1

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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