Thermodynamic properties of uranium in Ga–In based alloys

Abstract

a b s t r a c tActivity of uranium was determine d in gallium, indium and gallium-indium eutectic (21.8 wt.% In) based alloys between 573 and 1073 K employing the electromotive force method. In two-phase U-Ga-In alloys, uranium forms the intermetallic compound UGa 3 . Activity coefficients and solubility of uranium in Ga-In eutectic were also determine d in the same temperature range. Partial thermodynamic functions of c-U in saturate d alloys wit h gallium, indium and Ga-In eutectic were calculated.

Thermodynamics of uranium in (Ga + Sn) eutectic alloy

“…For example, addition of indium to Ga-U alloys did not change uranium activity and had very small influence on uranium activity coefficients, compare to Ga-U system [3]. Similar behaviour was observed for solutions of some lanthanides in Ga-In alloys [4,5].…”

“…General experimental procedure and the construction of the experimental cell were described earlier [3]. with the corresponding solid phase [1].…”

“…Binary U-Ga alloys were studied in a previous work [3] where the analysis of the data found in the literature was also presented. In the present study experiments were performed in U-Sn and U-GaSn alloys.…”

“…Calculations were based on the results obtained in the present work except for uranium activity in gallium taken from the previous report [3] and uranium solubility in tin taken from the work of Kadochnikov et al [27].…”

“…The existence and thermal stability of UGa and U 3 Ga 5 phases reported in the earlier studies [12,13] remain uncertain. Thermodynamic properties of uranium in liquid Ga based alloys were determined using a number of techniques [6,[14][15][16][17][18][19], usually at relatively high temperatures, and the available data were compared in a previous study [3].…”