Experimental investigation and thermodynamic modelling of the ThF4-PuF3 phase diagram

Journal article (2023)

Authors

A. Tosolin Politecnico di Milano, Joint Research Centre (JRC)
J. F. Vigier Joint Research Centre (JRC)
S. Mastromarino RST/Reactor Physics and Nuclear Materials - AS , Joint Research Centre (JRC)
R. J.M. Konings Joint Research Centre (JRC)
L. Luzzi Politecnico di Milano
O. Beneš Joint Research Centre (JRC)
Research Group
RST/Reactor Physics and Nuclear Materials (AS) (TU Delft)
Copyright: © 2023 A. Tosolin, J. F. Vigier, S. Mastromarino, R. J.M. Konings, L. Luzzi, O. Beneš
DOI: https://doi.org/10.1016/j.jnucmat.2023.154682
More Info
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Published Date

2023

Language

English

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Reactor Physics and Nuclear Materials

Abstract

Phase equilibria in the ThF4-PuF3 system were measured by differential scanning calorimetry. Samples were encapsulated to prevent leakage during the measurements and to prevent fluoride contamination of the instrument. Formation of intermediate compounds and solid solutions was investigated by X-ray diffraction. A thermodynamic model based on the CALPHAD approach was developed for the measured system. Good fit between measurements and phase equilibria calculated using the model was achieved.