“…In case of the LiF-PuF 3 and NaF-PuF 3 systems the experimental description is known [9,10] and these data have been used to optimize the phase diagrams. Since the quasi-chemical model has been explained by Chartrand and Pelton [7,8] and also rough descriptions have been shown in our previous works [3,4], the reader is referred to those publications for details.…”
“…In case of the LiF-PuF 3 and NaF-PuF 3 systems the experimental description is known [9,10] and these data have been used to optimize the phase diagrams. Since the quasi-chemical model has been explained by Chartrand and Pelton [7,8] and also rough descriptions have been shown in our previous works [3,4], the reader is referred to those publications for details.…”
“…Different sets of experimental data exist for LiF−LaF 3 17-20 and NaF−LaF 3 , , and they have the largest variations at the LaF 3 -rich side of the diagram. This is probably the case for the CeF 3 and PuF 3 analogues as well, but fewer data − are available to make a proper comparison. During the optimization, it is important to distinguish between the different experimental sets, and to select the one that seems most correct.…”
Section: Resultsmentioning
confidence: 99%
“…Closed circles, experimental data; open diamonds, Barton et al 4 Calculated diagram of LiF−PuF 3 . Data from Barton et al 5 Calculated diagrams of NaF−LaF 3 . Solid line, polynomial model; dashed line, quasichemical model.…”
The ternary systems LiF-NaF-LaF 3 and LiF-NaF-CeF 3 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 quasichemical in 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-PuF 3 were assessed, making use of experimental data known from the literature. The lanthanide systems served as a proxy for LiF-NaF-PuF 3 to calculate the ternary phase diagram.
“…The system LiFPuF 3 has been thoroughly measured by Barton and Strehlow [23], but data on LiF-UF 3 , which are based on an unpublished report by Barton et al given in [7], are scattered and less precise. The resulting diagram, although a single eutectic binary system as well, has a distinctly different shape when compared to the others.…”
Section: The Lif-lnf 3 and Lif-anf 3 Diagramsmentioning
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