Corrosion of Nickel Exposed to LiF-NaF Molten Salt

0369538 - ÚFM 2012 RIV CZ eng C - Conference Paper (international conference)
Král, Lubomír - Čermák, Jiří - Matal, O. - Šimo, T. - Nesvadba, L.
Corrosion of Nickel Exposed to LiF-NaF Molten Salt.
METAL 2011 Conference Proceedings. Ostrava: TANGER, spol. s r.o., 2011, paper no. 882. ISBN 978-80-87294-22-2.
[Anniversary International Conference on Metallurgy and Materials METAL 2011/20th./. Brno (CZ), 18.05.2011-20.05.2011]
R&D Projects: GA MPO 2A-1TP1/067
Institutional research plan: CEZ:AV0Z20410507
Keywords : corrosion * molten salts * nickel * LiF–NaF
Subject RIV: JG - Metallurgy

This work is devoted to study of changes of structure and chemical composition in corrosion areas of the chosen candidate alloy, Nickel 201, for components of a LS-VHTR. The material was annealed at 1013K/10h/vacuum and at 1000°C/24h/Ar before corrosion tests. The annealed material was studied after its exposure to the molten mixture of 60 mol. % LiF + 40 mol. % NaF at the temperature of 1013K. The exposition was carried out in a quasidynamic regime, which simulates real circulation of the coolant (a mixture of molten salts) in the piping. The structure of the alloy was studied by SEM. Severe corrosion damage was observed in grain boundaries.
Permanent Link: http://hdl.handle.net/11104/0006748