[Table of Contents]

Plasma and Fusion Research

Volume 8, 2405103 (2013)

Regular Articles

Deuterium Retention in Tungsten-Coated Reduced Activation Ferritic/Martensitic Steel
Marco ARMANDO, Yuji YAMAUCHI, Akihito TSUCHIYA, Yuji NOBUTA and Tomoaki HINO
Laboratory of Plasma Physics and Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan
(Received 22 November 2012 / Accepted 7 May 2013 / Published 15 August 2013)

Abstract

In order to evaluate tungsten (W) coating performance, thin W film was deposited onto reduced activation ferritic/martensitic steel (F82H) by using rf magnetron sputtering device, then was irradiated at room temperature by 1.7 keV D+ ions. After the irradiation, the deuterium retention of the coated sample (W/F82H) was evaluated by thermal desorption spectroscopy (TDS) and compared with those of the F82H and pure W. During TDS measurements, D2 was desorbed in all materials but HD was only found in significant amount in W/F82H and related to the increase of effective surface area due to the porous film structure. D retention increased with increasing fluence and was accompanied by growth of circular blisters. The size of blisters was limited by the F82H substrate structure.

Keywords

deuterium retention, tungsten film, coating, magnetron sputtering, ferritic steel

DOI: 10.1585/pfr.8.2405103

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This paper may be cited as follows:

Marco ARMANDO, Yuji YAMAUCHI, Akihito TSUCHIYA, Yuji NOBUTA and Tomoaki HINO, Plasma Fusion Res. 8, 2405103 (2013).