Effect of metal fluorides on the corrosion of structural materials in molten LiF-NaF-KF

Sankar, Krishna Moorthi; Singh, Preet M.

doi:10.1016/j.corsci.2023.110977

Effect of metal fluorides on the corrosion of structural materials in molten LiF-NaF-KF

Journal Article · Wed Jan 11 00:00:00 EST 2023 · Corrosion Science

DOI:https://doi.org/10.1016/j.corsci.2023.110977· OSTI ID:2418319

Sankar, Krishna Moorthi ^[1]; Singh, Preet M. ^[2]

Georgia Institute of Technology, Atlanta, GA (United States); OSTI
Georgia Institute of Technology, Atlanta, GA (United States)

The corrosion of structural materials in molten fluoride salts is predominantly caused by the presence of impurities in the salt. Here, this study focuses on understanding the corrosion behavior of selected alloys in molten FLiNaK salt with addition of similar quantities of metal fluoride impurities such as CrF₂, CrF₃, FeF₂, FeF₃, and NiF₂. The results show that the presence of selected metal fluoride impurities increases the extent of corrosion of the selected alloys in molten FLiNaK salt, with the exact effect depending on the thermodynamic stability of the fluoride impurity added as well as the composition of the structural alloy studied.

View Accepted Manuscript (DOE)

Research Organization:: Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: NE0008749

OSTI ID:: 2418319

Alternate ID(s):: OSTI ID: 1915682

Journal Information:: Corrosion Science, Journal Name: Corrosion Science Vol. 213; ISSN 0010-938X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
Corrosion
FLiNaK
Impurity effects
Metal fluorides
Molten salt

Effect of metal fluorides on the corrosion of structural materials in molten LiF-NaF-KF

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