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Surface morphology of the bulk tungsten divertor tiles from JET ITER‐like wall
https://repo.qst.go.jp/records/79426
https://repo.qst.go.jp/records/79426298ba6c7-8513-40b8-b551-7381deb703bc
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-03-13 | |||||
| タイトル | ||||||
| タイトル | Surface morphology of the bulk tungsten divertor tiles from JET ITER‐like wall | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
M. Tokitani
× M. Tokitani× M. Miyamoto× S. Masuzaki× Y. Hatano× S.E., Lee× Y. Oya× T. Otsuka× Oyaizu, Makoto× Kurotaki, Hironori× T. Suzuki× Hamaguchi, Dai× Hayashi, Takumi× Asakura, Nobuyuki× A. Widdowson× S. Jachmich× M. Rubel× Oyaizu, Makoto× Kurotaki, Hironori× Hamaguchi, Dai× Hayashi, Takumi× Asakura, Nobuyuki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Surface characterization of bulk tungsten tiles (W lamellae) used during the first campaign of JET with the ITER-Like Wall (JET-ILW) was performed by means of microscopy and tritium imaging techniques. This is the first report regarding very detailed structural studies of W lamellae from the JET-ILW divertor. A special feature of the W lamellae installed in JET is the intrinsic network of micro-cracks detected on surfaces of the as-manufactured material. Analyses of different W lamellae samples on the plasma facing surface reveal two types of surface structures caused by plasma impact: areas with strong erosion and regions of mild plasma interaction. In regions of strong erosion, a thin modified layer (thickness of ~20 nm) with a high density of defects including bubble-like structures has been formed. In addition, features indicating melting along edges of micro-cracks with the micro-scale plastic deformation have been identified. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 17th International Conference on Plasma-Facing Materials and Components for Fusion Applications | |||||
| 発表年月日 | ||||||
| 日付 | 2019-05-23 | |||||
| 日付タイプ | Issued | |||||
