Damage process of resolidified part on CVD-W coated molybdenum under high heat load

S. Tamura, K. Tokunaga, N. Yoshida

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)

Abstract

In view of the recent interest in high-Z metals as plasma facing materials, a high purity CVD-W (99.99998%) coated molybdenum material was prepared. The specimens had been melted at the joint interface under high heat load were made in order to prove the change. Then heat load experiments were performed on these specimens using an electron beam. As the results, the formation of the W-Mo alloy on the heat-affected surface leads the significant weight loss in the temperature range around 2500 °C. But in the temperature range around 2000 °C, the weight loss did not occur. In this experiment, we also carried out a research into the diffusion behavior of a high purity CVD-W/Mo system. These results indicated that the thermal and adhesion properties between the molybdenum substrate and the high purity CVD-W coating were good under high heat loads.

Original languageEnglish
Pages (from-to)250-254
Number of pages5
JournalJournal of Nuclear Materials
Volume313-316
Issue numberSUPPL.
DOIs
Publication statusPublished - Mar 2003
EventPlasma - Surface Interactions in Controlled Fusion Devices - Gifu, Japan
Duration: May 26 2002May 31 2002

All Science Journal Classification (ASJC) codes

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

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