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Long-term corrosion behavior of Al-based coatings in flowing Pb–15.7Li, produced by electrochemical ECX process

Wulf, Sven-Erik; Krauss, Wolfgang; Konys, Jürgen

RAFM-steels such as Eurofer are considered as structural materials for breeding blankets in future fusion power plants (DEMO). Some of these blankets e.g. HCLL, WCLL and DCLL, use flowing Pb–15.7Li as liquid breeding material. In these concepts, the breeding material will be in direct contact to the structural material at operational temperatures of up to 550 °C. However, bare RAFM steels suffer from strong corrosion attack with corrosion rates between 100 and 400 µm under these conditions. To protect bare RAFM steels from corrosion, Al-based coatings are considered as corrosion barriers. Different coating processes were developed in the past, with focus on electrochemical processes within the last decade. The currently most promising one is the so-called ECX process. Based on the electrodeposition of aluminum from an ionic liquid, it produces smooth and uniform Al enriched scales. These ECX coatings have already shown good short- to mid-term corrosion resistance in flowing Pb–15.7Li for up to 4000 h.

In the current study, the long-term corrosion behavior of aluminum-based coatings on Eurofer made by ECX process was investigated. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000084477
Veröffentlicht am 16.07.2018
DOI: 10.1016/j.nme.2018.06.019
Zitationen: 2
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2352-1791
KITopen-ID: 1000084477
HGF-Programm 31.03.09 (POF III, LK 01)
Erschienen in Nuclear materials and energy
Band 16
Seiten 158–162
Schlagworte Corrosion, Lead-lithium, Barrier, Aluminum, Electrodeposition, Ionic liquids
Nachgewiesen in Scopus
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