Thermal properties of fluoride mixtures near the melting point

Aleksey Rudenko; Alexander Redkin; Evgeniya Il’ina; Svetlana Pershina

doi:10.15826/chimtech.2025.12.3.03

Thermal properties of fluoride mixtures near the melting point

Aleksey Rudenko, Alexander Redkin, Evgeniya Il’ina, Svetlana Pershina

Abstract

The thermal diffusivity of LiF-NaF-KF (FLiNaK), NaF-KF and FliNaK-NdF₃ mixtures was studied by laser flash method near the melting point. The obtained results demonstrate that the thermal diffusivity of the melts slowly decreases within a certain temperature range. Thermal diffusivity of eutectic FLiNaK and NaF-KF mixtures was found to drop sharply at the temperatures of 30–50 ° below the melting point. These values correspond to the overcooling interval. Thermal conductivity was calculated using the thermal diffusivity heat capacity and density data. Thermal diffusivity of the FliNaK-NdF₃ mixture decreases slowly in the phase transition temperature range.

Keywords

thermal diffusivity; heat capacity; melting point; thermal conductivity; fluoride mixtures

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DOI: https://doi.org/10.15826/chimtech.2025.12.3.03

Copyright (c) 2025 Aleksey Rudenko, Alexander Redkin, Evgeniya Il’ina, Svetlana Pershina

This work is licensed under a Creative Commons Attribution 4.0 International License.

Chimica Techno Acta, 2014–2025
eISSN 2411-1414
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