Enthalpy of mixing in the Ag-Cd-In ternary liquid phase

Abstract : Most pressurized water reactor control rods are composed of the Ag-In-Cd neutron absorber alloy (80 wt% Ag, 15 wt% In, 5 wt% Cd). Under accidental conditions such as a loss of coolant, vaporization of the metallic elements from the Ag-In-Cd alloy becomes important to consider in the evaluation of the fission product release to the environment. The enthalpy of mixing has been measured in the ternary Ag-Cd-In liquid for five isopleth sections by silver and cadmium drop dissolution calorimetry at 723 K. The limits of the biphasic solid + liquid domain are derived from the slopes changes on the partial mixing enthalpy curves. A tentative partial isothermal section at 723 K is proposed. (c) 2016 Elsevier Ltd.
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P. Benigni, S. Hassam, A. Decreton, G. Mikaelian, K. Gajavalli, et al.. Enthalpy of mixing in the Ag-Cd-In ternary liquid phase. Journal of Chemical Thermodynamics, Elsevier, 2017, 107, pp.207 - 215. ⟨10.1016/j.jct.2016.12.005⟩. ⟨hal-01788742⟩



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