Manufacture of vacuum plasma spraying tungsten with homogenous texture on reduced activation ferritic steel at about 873K

Tomonori Tokunaga, Hideo Watanabe, Naoaki Yoshida, Takuya Nagasaka, Ryuta Kasada, Akihiko Kimura, Masayuki Tokitani, Masatoshi Mitsuhara, Hideharu Nakashima, Suguru Masuzaki, Takeshi Takabatake, Nobuyoshi Kuroki, Koichiro Ezato, Satoshi Suzuki, Masato Akiba

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Abstract

The key to improving the heat load of vacuum plasma sprayed tungsten coatings on low activation ferritic steel maintained at low temperatures is elimination of stratified low-density layers with many large pores, in which thermal cracks propagate preferentially. The low-density layers are formed owing to the deposition of large solidified tungsten particles, which remain mainly at the periphery of the spray stream. In this study, by shading this periphery, partially homogeneous tungsten coatings without large pores were successfully obtained. The coatings are expected to show good heat load, which is feasible for nuclear fusion applications.

Original languageEnglish
Article number1405111
JournalPlasma and Fusion Research
Volume8
DOIs
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Tokunaga, T., Watanabe, H., Yoshida, N., Nagasaka, T., Kasada, R., Kimura, A., Tokitani, M., Mitsuhara, M., Nakashima, H., Masuzaki, S., Takabatake, T., Kuroki, N., Ezato, K., Suzuki, S., & Akiba, M. (2013). Manufacture of vacuum plasma spraying tungsten with homogenous texture on reduced activation ferritic steel at about 873K. Plasma and Fusion Research, 8, [1405111]. https://doi.org/10.1585/pfr.8.1405111