Helium irradiation behavior of tungsten-niobium alloys under different ion energies

Meng Yao Xu, Lai Ma Luo, Yu Feng Zhou, Xiang Zan, Yue Xu, Qiu Xu, Kazutoshi Tokunaga, Xiao Yong Zhu, Yu Cheng Wu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Tungsten is a primary material in plasma-facing components (PFCs), but several disadvantages limit its application in fusion reactors. This work examined tungsten–niobium (W–Nb) alloys as potential PFC materials and investigated their response to low-energy helium ion irradiation. W–Nb powders were milled for 25 and 36 h, and the W–Nb samples were exposed to 50 and 80 eV helium ion irradiation with a flux of 1.5 × 1022 ions/m2 s at 1230 °C. The sample with a dense structure and obtained after a 25-h milling exhibited enhanced anti-irradiation performance. Sufficient energy can be provided to promote helium ion migration in the matrix, resulting in the formation of nanotendrils. Furthermore, in W–Nb alloys, the Nb-rich regions are more attractive to helium ions and thus provide protection to the tungsten matrix.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalFusion Engineering and Design
Volume132
DOIs
Publication statusPublished - Jul 1 2018

Fingerprint

Niobium alloys
Tungsten alloys
Helium
Irradiation
Ions
Facings
Tungsten
Ion bombardment
Plasmas
Fusion reactors
Powders
Fluxes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Helium irradiation behavior of tungsten-niobium alloys under different ion energies. / Xu, Meng Yao; Luo, Lai Ma; Zhou, Yu Feng; Zan, Xiang; Xu, Yue; Xu, Qiu; Tokunaga, Kazutoshi; Zhu, Xiao Yong; Wu, Yu Cheng.

In: Fusion Engineering and Design, Vol. 132, 01.07.2018, p. 7-12.

Research output: Contribution to journalArticle

Xu, Meng Yao ; Luo, Lai Ma ; Zhou, Yu Feng ; Zan, Xiang ; Xu, Yue ; Xu, Qiu ; Tokunaga, Kazutoshi ; Zhu, Xiao Yong ; Wu, Yu Cheng. / Helium irradiation behavior of tungsten-niobium alloys under different ion energies. In: Fusion Engineering and Design. 2018 ; Vol. 132. pp. 7-12.
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AU - Xu, Qiu

AU - Tokunaga, Kazutoshi

AU - Zhu, Xiao Yong

AU - Wu, Yu Cheng

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