Evaluation of vacuum plasma-sprayed boron carbide protection for the stainless steel first wall of WENDELSTEIN 7-X
| Autor: | G Hofmann, M Riegert-Escribano, T. Huber, M. Balden, R. Neu, G. Matern, H. Bolt, J. Roth, H. Renner, Stefan Lindig, J Simon-Weidner, H. Greuner, W. Kasparek, M. Mayer, H Kumric, P. Grigull, B. Boeswirth, R. Wacker, Rainer Gadow |
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| Rok vydání: | 2004 |
| Předmět: |
Nuclear and High Energy Physics
Materials science chemistry.chemical_element Boron carbide Plasma Fusion power engineering.material law.invention chemistry.chemical_compound Nuclear Energy and Engineering chemistry Coating law engineering General Materials Science Composite material Wendelstein 7-X Carbon Plasma-facing material Stellarator Nuclear chemistry |
| Zdroj: | Journal of Nuclear Materials. :849-854 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2004.04.214 |
| Popis: | To minimize radiation losses of the plasma during long pulse operation, the first wall protection of WENDELSTEIN 7-X demands low-Z plasma facing materials. In addition to carbon materials on high heat flux loaded components, 300–500 μm thick vacuum plasma-sprayed (VPS) layers of boron carbide (B4C) are considered as coatings on large actively cooled stainless steel panels. In order to evaluate the behaviour relevant to the expected plasma wall interactions, an extensive material characterization and test programme was executed. Also included is the examination of the industrial manufacturing and the suitability of these coatings as 70 m2 first wall plasma facing material for W7-X. To improve the adhesion of thick B4C layers on stainless steel, different interlayers have been investigated. Based on the results, a VPS-based coating technique was identified which is suitable to manufacture the B4C protection layers on stainless steel wall panels of W7-X. |
| Databáze: | OpenAIRE |
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