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ウエダ ヨシオ
Ueda Yoshio
上田 良夫 所属 追手門学院大学 理工学部 電気電子工学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2014/04 |
| 形態種別 | 論文 |
| 査読 | 査読あり |
| 標題 | Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma |
| 執筆形態 | 共著・編著（代表編著を除く） |
| 掲載誌名 | PHYSICA SCRIPTA |
| 掲載区分 | 国外 |
| 出版社・発行元 | IOP PUBLISHING LTD |
| 巻・号・頁 | T159(T159),pp.014038 |
| 国際共著 | 国際共著 |
| 著者・共著者 | Y. Ueda,M. Oya,Y. Hamaji,H. T. Lee,H. Kurishita,Y. Torikai,N. Yoshida,A. Kreter,J. W. Coenen,A. Litnovsky,V. Philipps |
| 概要 | In order to evaluate the applicability of toughened, fine-grained, recrystallized (TFGR)-W to tokamak edge plasma environment, two TFGR-W specimens (TFGR-W 1.1 wt% TiC and TFGR-W 3.3wt% TaC) were exposed to 31 identical ohmic discharges in the TEXTOR tokamak by means of a limiter lock system. The highest surface temperature reached was about 1300 degrees C. Under these temperature conditions, the bulk microstructure and dispersoids distribution of both TFGR-W remained intact, suggesting that these TFGR-W tungsten materials have sufficient stability under these plasma loading conditions. The erosion of TiC dispersoids on the surface was enhanced by plasma exposure above 1150 degrees C, while such enhanced erosion was not observed for TaC dispersoids probably due to the higher melting temperature of Ta than Ti. |
| DOI | 10.1088/0031-8949/2014/T159/014038 |
| ISSN | 0031-8949/1402-4896 |
| Put Code(ORCID) | 15243189 |
| PermalinkURL | http://orcid.org/0000-0002-9230-2334 |