This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1088/0031-8949/2014/T159/014038 in citations.
Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma
Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma
In order to evaluate the applicability of toughened, fine-grained, recrystallized (TFGR)-W to tokamak edge plasma environment, two TFGR-W specimens (TFGR-W 1.1wt%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 highe...
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Personal Name(s): | Ueda, Y. (Corresponding Author) |
---|---|
Oya, M. / Hamaji, Y. / Lee, H. T. / Kurishita, H. / Torikai, Y. / Yoshida, N. / Kreter, A. / Coenen, J. W. / Litnovsky, A. / Philipps, V. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Physica scripta, T159 (2014) S. 014038 |
Imprint: |
Bristol
IoP Publ.
2014
|
DOI: |
10.1088/0031-8949/2014/T159/014038 |
Document Type: |
Journal Article |
Research Program: |
Plasma-wall interactions |
Publikationsportal JuSER |
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245 | |a Surface erosion and modification of toughened, fine-grained, recrystallized tungsten exposed to TEXTOR edge plasma | ||
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520 | |a In order to evaluate the applicability of toughened, fine-grained, recrystallized (TFGR)-W to tokamak edge plasma environment, two TFGR-W specimens (TFGR-W 1.1wt%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 °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 °C, while such enhanced erosion was not observed for TaC dispersoids probably due to the higher melting temperature of Ta than Ti. | ||
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