High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups

K. Tokunaga, N. Yoshida, Y. Kubota, N. Noda, Y. Imamura, T. Oku, A. Kurumada, T. Sogabe, T. Kato, L. Plöchl

Research output: Contribution to journalConference articlepeer-review

18 Citations (Scopus)


CX-2002U and IG-43OU coated by VPS-W were developed to be as a light high-Z plasma-facing material. After brazing them on OFHC blocks using a Ti foil, their thermal response and thermal fatigue properties were examined with active cooling. No cracks and no exfoliation occurred on the W surface and the braze interface even after 160 cycles of heat load for 20 s at 10 MW/m2. This result indicates that the Ti-brazing is a possible alternative to Ag-brazing for joining carbon to Cu. Heat load resistance of the VPS-W coated CX-2002U/OFHC was much better than the VPS-W coated IG-430U/OFHC due to the excellent thermal conductivity of CX-2002U. VPS-W coated CFC/OFHC is a potential candidate for a high heat resistance armor material on plasma facing components.

Original languageEnglish
Pages (from-to)371-376
Number of pages6
JournalFusion Engineering and Design
Publication statusPublished - Nov 2000
Event5th International Symposium on Fusion Nuclear Technology - Rome, Italy
Duration: Sept 19 2000Sept 24 2000

All Science Journal Classification (ASJC) codes

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


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