Transient thermal shock behavior of W–Zr/Sc2O3 composites prepared via spark plasma sintering

Hong Yu Chen, Lai Ma Luo, Xiang Zan, Qiu Xu, Kazutoshi Tokunaga, Jia Qin Liu, Dong Guang Liu, Xiao Yong Zhu, Ji Gui Cheng, Yu Cheng Wu

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Abstract

W–Zr/Sc2O3 composites with different Zr doping content were produced through powder metallurgy (PM) and subsequent spark plasma sintering (SPS) at 1700 °C. The thermal conductivity of composites decreased initially and then increased as the Zr content increased. Afterwards, the thermal shock behavior of W–Zr/Sc2O3 composites under transient event was investigated. Repeated electron irradiations cause significant surface roughening, cracks, and extruded structures. These surface modifications are attributed to plastic deformation and thermal fatigue. Results reveal that W-1%vol Zr/2%vol Sc2O3 has superior thermal properties and great resistance to surface modifications under repeated high heat-load.

Original languageEnglish
Pages (from-to)44-50
Number of pages7
JournalFusion Engineering and Design
Volume126
DOIs
Publication statusPublished - Jan 1 2018

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All Science Journal Classification (ASJC) codes

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

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