Development of high-grade VPS-tungsten coatings on F82H reduced activation steel

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

doi:10.1016/j.jnucmat.2012.11.004

Development of high-grade VPS-tungsten coatings on F82H reduced activation steel

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

IMR - Materials Design Division

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Vacuum plasma sprayed tungsten (VPS-W) coating formed on F82H steel kept at about 873 K in conventional plasma spray conditions has inhomogeneous texture; it is a mixture of disorganized areas composed of large unmelted grains, fine randomly oriented grains and pores, and well-ordered areas composed of columnar grains. Heat load tests indicate that elimination of the disorganized area is necessary to improve the heat load resistance of VPS-W. One can get W coating with a texture of homogeneous columnar crystal grains by eliminating the unmelted large particles. Optimization of the W powder size was also effective to reduce the number of randomly oriented fine grains and pores.

Original language	English
Pages (from-to)	S287-S291
Journal	Journal of Nuclear Materials
Volume	442
Issue number	1-3 SUPPL.1
DOIs	https://doi.org/10.1016/j.jnucmat.2012.11.004
Publication status	Published - 2013

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Tokunaga, T., Watanabe, H., Yoshida, N., Nagasaka, T., Kasada, R., Lee, Y. J., Kimura, A., Tokitani, M., Mitsuhara, M., Hinoki, T., Nakashima, H., Masuzaki, S., Takabatake, T., Kuroki, N., Ezato, K., Suzuki, S., & Akiba, M. (2013). Development of high-grade VPS-tungsten coatings on F82H reduced activation steel. Journal of Nuclear Materials, 442(1-3 SUPPL.1), S287-S291. https://doi.org/10.1016/j.jnucmat.2012.11.004

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title = "Development of high-grade VPS-tungsten coatings on F82H reduced activation steel",

abstract = "Vacuum plasma sprayed tungsten (VPS-W) coating formed on F82H steel kept at about 873 K in conventional plasma spray conditions has inhomogeneous texture; it is a mixture of disorganized areas composed of large unmelted grains, fine randomly oriented grains and pores, and well-ordered areas composed of columnar grains. Heat load tests indicate that elimination of the disorganized area is necessary to improve the heat load resistance of VPS-W. One can get W coating with a texture of homogeneous columnar crystal grains by eliminating the unmelted large particles. Optimization of the W powder size was also effective to reduce the number of randomly oriented fine grains and pores.",

author = "Tomonori Tokunaga and Hideo Watanabe and Naoaki Yoshida and Takuya Nagasaka and Ryuta Kasada and Lee, {Young Ju} and Akihiko Kimura and Masayuki Tokitani and Masatoshi Mitsuhara and Tatsuya Hinoki and Hideharu Nakashima and Suguru Masuzaki and Takeshi Takabatake and Nobuyoshi Kuroki and Koichiro Ezato and Satoshi Suzuki and Masato Akiba",

year = "2013",

doi = "10.1016/j.jnucmat.2012.11.004",

language = "English",

volume = "442",

pages = "S287--S291",

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issn = "0022-3115",

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Tokunaga, T, Watanabe, H, Yoshida, N, Nagasaka, T, Kasada, R, Lee, YJ, Kimura, A, Tokitani, M, Mitsuhara, M, Hinoki, T, Nakashima, H, Masuzaki, S, Takabatake, T, Kuroki, N, Ezato, K, Suzuki, S & Akiba, M 2013, 'Development of high-grade VPS-tungsten coatings on F82H reduced activation steel', Journal of Nuclear Materials, vol. 442, no. 1-3 SUPPL.1, pp. S287-S291. https://doi.org/10.1016/j.jnucmat.2012.11.004

TY - JOUR

T1 - Development of high-grade VPS-tungsten coatings on F82H reduced activation steel

AU - Tokunaga, Tomonori

AU - Watanabe, Hideo

AU - Yoshida, Naoaki

AU - Nagasaka, Takuya

AU - Kasada, Ryuta

AU - Lee, Young Ju

AU - Kimura, Akihiko

AU - Tokitani, Masayuki

AU - Mitsuhara, Masatoshi

AU - Hinoki, Tatsuya

AU - Nakashima, Hideharu

AU - Masuzaki, Suguru

AU - Takabatake, Takeshi

AU - Kuroki, Nobuyoshi

AU - Ezato, Koichiro

AU - Suzuki, Satoshi

AU - Akiba, Masato

PY - 2013

Y1 - 2013

N2 - Vacuum plasma sprayed tungsten (VPS-W) coating formed on F82H steel kept at about 873 K in conventional plasma spray conditions has inhomogeneous texture; it is a mixture of disorganized areas composed of large unmelted grains, fine randomly oriented grains and pores, and well-ordered areas composed of columnar grains. Heat load tests indicate that elimination of the disorganized area is necessary to improve the heat load resistance of VPS-W. One can get W coating with a texture of homogeneous columnar crystal grains by eliminating the unmelted large particles. Optimization of the W powder size was also effective to reduce the number of randomly oriented fine grains and pores.

AB - Vacuum plasma sprayed tungsten (VPS-W) coating formed on F82H steel kept at about 873 K in conventional plasma spray conditions has inhomogeneous texture; it is a mixture of disorganized areas composed of large unmelted grains, fine randomly oriented grains and pores, and well-ordered areas composed of columnar grains. Heat load tests indicate that elimination of the disorganized area is necessary to improve the heat load resistance of VPS-W. One can get W coating with a texture of homogeneous columnar crystal grains by eliminating the unmelted large particles. Optimization of the W powder size was also effective to reduce the number of randomly oriented fine grains and pores.

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M3 - Article

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SP - S287-S291

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 SUPPL.1

ER -

Development of high-grade VPS-tungsten coatings on F82H reduced activation steel

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