Deuterium retention in W and binary W alloys irradiated with high energy Fe ions

Jing Wang, Yuji Hatano, Tatsuya Hinoki, Vladimir Kh Alimov, Alexander V. Spitsyn, Nikolay P. Bobyr, Sosuke Kondo, Takeshi Toyama, Heun Tae Lee, Yoshio Ueda, Thomas Schwarz-Selinger

Research output: Contribution to journalArticlepeer-review

Abstract

To investigate systematically the effects of Re and other elements on deuterium (D) retention, W and binary W-alloys (Re, Mo and Ta) were irradiated with 6.4 MeV Fe ions at high temperatures (1073–1273 K) and then exposed to D2 gas at 673 K. Depth profiles of D were measured by nuclear reaction analysis (NRA), and D retention was determined by thermal desorption spectrometry (TDS) and NRA. The addition of 5 at.% Re into W reduced the content of D trapped at radiation-induced defects created by irradiation with the Fe ions at 1273 K to the peak damage level of 5 displacements per atom (dpa). At Re fractions of 1, 3 and 5 at.%, comparable effects on D retention were observed after irradiation to 0.5 dpa at 1073 K. The addition of Mo and Ta to W resulted in no visible effects in D retention.

Original languageEnglish
Article number152749
JournalJournal of Nuclear Materials
Volume545
DOIs
Publication statusPublished - 2021 Mar

Keywords

  • Deuterium retention
  • Ion irradiation
  • Molybdenum
  • Rhenium
  • Tantalum
  • Tungsten

ASJC Scopus subject areas

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

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