Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

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

Benigni, P., Hassam, S., Decreton, A., Mikaelian, G., Gajavalli, K., Barrachin, M., Fischer, E., Rogez, J.
J. Chem. Thermodyn. 2017, 107, 207-215
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.
Compounds
# Formula Name
1 Ag silver
2 Cd cadmium
3 In indium
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • 2
  • 3
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Mole fraction - 2; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Calvet calorimetry
  • 52
  • POMD
  • 1
  • 2
  • 3
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 24