| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1565470 | Journal of Nuclear Materials | 2013 | 5 Pages |
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.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
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,