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Helium retention and surface morphology of oxidized vanadium alloy

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Title: Helium retention and surface morphology of oxidized vanadium alloy
Authors: Yamauchi, Y. Browse this author →KAKEN DB
Oku, D. Browse this author
Hino, T. Browse this author
Shibayama, T. Browse this author
Nobuta, Y. Browse this author
Nagasaka, T. Browse this author
Muroga, T. Browse this author
Keywords: Helium retention
oxidation
vanadium alloy
thermal desorption
blister formation
Issue Date: 1-Oct-2011
Publisher: Elsevier B.V.
Journal Title: Journal of Nuclear Materials
Volume: 417
Issue: 1-3
Start Page: 327
End Page: 329
Publisher DOI: 10.1016/j.jnucmat.2010.12.103
Abstract: The effects of the surface oxidation on the helium desorption and retention behaviors of vanadium alloy were investigated. V-4Cr-4Ti alloy, which was thermally oxidized at 873 K for 15 minutes with 0.05 Pa, was irradiated by helium ions with energy of 5 keV at room temperature. Then, the helium desorption and retention behaviors were evaluated using a technique of thermal desorption spectroscopy. The changes in surface structures by the irradiation were also evaluated. Helium desorption behavior in low temperature region were significantly changed by the oxidation. Helium desorption around 700 K became large for the oxidized sample. The amount of retained helium and the blister size in the oxidized sample were smaller than of those in the non-oxidized one. These results indicate that the surface oxidation significantly affects the helium retention and desorption behaviors of the vanadium alloy.
Type: article (author version)
URI: http://hdl.handle.net/2115/47978
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山内 有二

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