Print Email Facebook Twitter Thermodynamic assessment of the LiF-NiF2, NaF-NiF2 and KF-NiF2 systems Title Thermodynamic assessment of the LiF-NiF2, NaF-NiF2 and KF-NiF2 systems Author Ocadiz flores, J.A. Capelli, E. (TU Delft RST/Reactor Physics and Nuclear Materials) Raison, P. E. (European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe) Konings, R. (TU Delft RST/Reactor Physics and Nuclear Materials; European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe) Smith, A.L. (TU Delft RST/Reactor Physics and Nuclear Materials) Date 2018-06-01 Abstract Using the modified quasi-chemical model in the quadruplet approximation, three new thermodynamic assessments of binary systems useful for the detailed operational design of the Molten Salt Reactor are presented: AF-NiF2 (A = Li, Na, K). These systems are particularly relevant for the study of the molten salt-structural materials interaction, as the salt containment is made of a Ni-based alloy. Using powder X-ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC), new experimental data were gathered for two of these systems, LiF-NiF2 and KF-NiF2, and compared to previous experimental assessments. Our data have confirmed the formation of a (Li1-2xNix)F solid solution. The three thermodynamic models show a very good agreement with the experimental data. The melting point of NiF2 was measured for the first time to be T = (1629 ± 5) K, and the thermal expansion coefficient for Li2NiF4 was found to be α=27.6·10-6K-1 in the temperature range T = (298–773) K. Subject CALPHADDifferential Scanning CalorimetryMolten Salt ReactorX-ray diffraction To reference this document use: http://resolver.tudelft.nl/uuid:6d591294-4455-44c9-823b-21e57467d9fe DOI https://doi.org/10.1016/j.jct.2018.01.023 Embargo date 2020-02-09 ISSN 0021-9614 Source The Journal of Chemical Thermodynamics, 121, 17-26 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2018 J.A. Ocadiz flores, E. Capelli, P. E. Raison, R. Konings, A.L. Smith Files PDF accepted_author_manuscript.pdf 879.4 KB Close viewer /islandora/object/uuid:6d591294-4455-44c9-823b-21e57467d9fe/datastream/OBJ/view