Corrosion of chosen Ni-based material exposed to LiF-NaF molten salts

0354415 - ÚFM 2011 RIV CZ eng C - Conference Paper (international conference)
Král, Lubomír - Čermák, Jiří - Matal, O. - Šimo, T. - Nesvadba, L.
Corrosion of chosen Ni-based material exposed to LiF-NaF molten salts.
Metal 2010. 19th International conference on metallurgy and materials - Conference Proceedings. Ostrava: Tanger s.r.o., 2010, s. 596-600. ISBN 978-80-87294-17-8.
[Metal 2010. International Conference on Metallurgy and Materials /19./. Rožnov pod Radhoštěm (CZ), 18.05.2010-20.05.2010]
R&D Projects: GA MPO 2A-1TP1/067
Institutional research plan: CEZ:AV0Z20410507
Keywords : molten salts * nickel alloys * corrosion
Subject RIV: JF - Nuclear Energetics

This work is devoted to study of changes of structure and chemical composition in the surface layer of chosen candidate alloy Ni – 6 W – 9 Mo – 1.7 Ti – 7 Cr (in wt. %) for components of a LS-VHTR. The material was studied after its exposure to molten mixture 60 mol. % LiF + 40 mol. % NaF at temperature 993 and 1013K. The exposition was carried out in a quasidynamic regime, which simulates coolant (the mixture of salts) natural circulation conditions in components. The structure of the alloy was studied by SEM. Severe corrosion damage was observed in the surface layer, which thickness was about 300 μm.
Permanent Link: http://hdl.handle.net/11104/0193422