Combined effect of laser thermal shock and helium ion irradiation on W-Y 2 O 3 composites

Yu Xiang Zhang, Xiao Yue Tan, Lai Ma Luo, Yue Xu, Xiang Zan, Qiu Xu, Kazutoshi Tokunaga, Xiao Yong Zhu, Yu Cheng Wu

Research output: Contribution to journalArticle

Abstract

Tungsten can be the preferred plasma-facing material for nuclear fusion reaction. In this work, W-Y 2 O 3 composite powder was successfully fabricated through the wet chemical method, and bulk materials were obtained by rolling and high temperature annealing. W-2 vol% Y 2 O 3 was exposed to 80 eV helium ion irradiation with a flux of 1.5 × 10 22 ions/(m 2 ·s) at 1503–1553 K to assess its thermal shock resistance and helium ion irradiation damage behavior. The thermal shock behaviors of samples were studied under a laser beam. The energy densities of the laser thermal shock were 0.32, 0.48, and 0.64 GW/m 2 . W-Y 2 O 3 was compared with commercial pure tungsten. The hardness of pure tungsten and W-Y 2 O 3 before and after helium irradiation was measured by using a micro-hardness tester. The surface micrograph after helium ion irradiation and thermal shock was observed through scanning electron microscopy. Results show that W-Y 2 O 3 composite materials have better resistance to laser thermal shock than pure tungsten.

Original languageEnglish
Pages (from-to)102-106
Number of pages5
JournalFusion Engineering and Design
Volume140
DOIs
Publication statusPublished - Mar 2019

All Science Journal Classification (ASJC) codes

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

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