Rapid Quenching of Molten Salts as an Approach for the Coordination Characterization of Corrosion Products

Lehmusto, Juho; Kurley, J. Matthew; Cakmak, Ercan; Keiser, James R.; Lindberg, Daniel; Engblom, Markus; Pint, Bruce A.; Raiman, Stephen S.

doi:10.1080/00295639.2023.2204175

Title: Rapid Quenching of Molten Salts as an Approach for the Coordination Characterization of Corrosion Products

Journal Article · 15 May 2023 · Nuclear Science and Engineering

DOI: https://doi.org/10.1080/00295639.2023.2204175 · OSTI ID:2283883

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Abo Akademi University, Turku (Finland)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Aalto Univ., Espoo (Finland)
Univ. of Michigan, Ann Arbor, MI (United States)

A new apparatus was built to rapidly cool molten salts in liquid argon to prevent contamination during quenching and enable new insight into the structure in the liquid state. To test the applicability of the apparatus, several industrially relevant chloride salt compositions were first melted, rapidly solidified, and then characterized. The design proved applicable for the rapid quenching of molten salt. Furthermore, the structure of the apparatus prevented exposure of the rapidly quenched salt to impurities (humidity, oxygen, etc.). X-ray diffraction of salt specimens cooled with and without liquid argon showed differences including a structure further from the expected stoichiometric equilibrium with rapid cooling. Of particular interest is the chemical state of metallic impurities, and this may be probed using electron paramagnetic resonance.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2283883

Journal Information:: Nuclear Science and Engineering, Vol. 198, Issue 3; ISSN 0029-5639

Publisher:: Taylor & FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Molten chlorides
solidification process
high-temperature corrosion
crystal structure

Title: Rapid Quenching of Molten Salts as an Approach for the Coordination Characterization of Corrosion Products

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