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

doi:10.1585/pfr.8.1405111

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

Research output: Contribution to journal › Article

2 Citations (Scopus)

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 language	English
Article number	1405111
Journal	Plasma and Fusion Research
Volume	8
DOIs	https://doi.org/10.1585/pfr.8.1405111
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1585/pfr.8.1405111

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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

Manufacture of vacuum plasma spraying tungsten with homogenous texture on reduced activation ferritic steel at about 873K. / Tokunaga, Tomonori; Watanabe, Hideo; Yoshida, Naoaki; Nagasaka, Takuya; Kasada, Ryuta; Kimura, Akihiko; Tokitani, Masayuki; Mitsuhara, Masatoshi ; Nakashima, Hideharu; Masuzaki, Suguru; Takabatake, Takeshi; Kuroki, Nobuyoshi; Ezato, Koichiro; Suzuki, Satoshi; Akiba, Masato.

In: Plasma and Fusion Research, Vol. 8, 1405111, 2013.

Research output: Contribution to journal › Article

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, vol. 8, 1405111. https://doi.org/10.1585/pfr.8.1405111

Tokunaga, Tomonori ; Watanabe, Hideo ; Yoshida, Naoaki ; Nagasaka, Takuya ; Kasada, Ryuta ; Kimura, Akihiko ; Tokitani, Masayuki ; Mitsuhara, Masatoshi ; Nakashima, Hideharu ; Masuzaki, Suguru ; Takabatake, Takeshi ; Kuroki, Nobuyoshi ; Ezato, Koichiro ; Suzuki, Satoshi ; Akiba, Masato. / Manufacture of vacuum plasma spraying tungsten with homogenous texture on reduced activation ferritic steel at about 873K. In: Plasma and Fusion Research. 2013 ; Vol. 8.

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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.",

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AU - Kasada, Ryuta

AU - Kimura, Akihiko

AU - Tokitani, Masayuki

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AU - Takabatake, Takeshi

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AU - Ezato, Koichiro

AU - Suzuki, Satoshi

AU - Akiba, Masato

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