Title: Modelling and Calculation of the LiF-NaF-MF3 (M=La,Ce,Pu) Phase Diagrams
Authors: VAN DER MEER JulietteKONINGS RUDYHACK KLAUSOONK H.a.j.
Citation: CHEMISTRY OF MATERIALS vol. 18 p. 510-517
Publisher: AMER CHEMICAL SOC
Publication Year: 2006
JRC N°: JRC30240
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC30240
Type: Articles in Journals
Abstract: The ternary systems LiF-NaF-LaF3 and LiF-NaF-CeF3 have been experimentally analyzed and thermodynamically assessed. Two models were used and compared to describe the excess Gibbs terms of the binary subsystems. One was a regular polynomial description of the excess terms, the other a quasi-chemical with the quadruplet approximation. In both cases, a fine agreement with the experimental data was achieved, after asymmetrical extrapolation from the binary to the ternary systems. The binary systems of the related actinide system LiF-NaF-PuF3 were assessed making use of experimental data known from the literature. The lanthanide systems served as a proxy for LiF-NaF-PuF3 to calculate the ternary phase diagram.
JRC Institute:Institute for Transuranium Elements

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