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