journal article·2024-09Open access

Thermodynamic behavior of CrF2 corrosion product in the molten LiF-ThF4 salt system

T. Dumaire, O. Walter, O. Beneš, J.-C. Griveau, E. Colineau, R.J.M. Konings, A.L. Smith

Calphad· Volume 86

Abstract

This work examines the thermochemistry of the chromium difluoride CrF2 corrosion product in the molten fuel salt system. Through a combination of experimental investigations and thermodynamic modeling assessment, the study elucidates the thermodynamic properties, phase diagram equilibria, and overall thermodynamic behavior of CrF2 corrosion product, following dissolution from a structural material to the molten salt fuel environment. In this work, two different synthesis methods were developed for pure CrF2, further allowing to experimentally measure the phase equilibria in the , , and systems. Then, thermodynamic models were developed using the CALPHAD method based on the quasichemical model in the quadruplet approximation.
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Research context

OpenAlex topics: Molten salt chemistry and electrochemical processes · Nuclear Materials and Properties · Metallurgical Processes and Thermodynamics

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