Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Enthalpies of mixing of liquid Ag-Ga, Au-Ga and Ag-Au-Ga alloys

Jendrzejczyk-Handzlik, D.[Dominika]
J. Chem. Thermodyn. 2017, 107, 114-125
ABSTRACT
A literature overview of Ag-Au-Ga system shows that the information about the liquid phase of this system does not exist. Therefore, using MHTC 96 Setaram high temperature drop calorimeter, partial and integral enthalpies of mixing of liquid alloys were determined at first in the binary systems Ag-Ga, Au- Ga and finally in ternary Ag-Au-Ga system. Next, the ternary alloys were investigated along two sections at two temperatures: 1223 K and 1323 K. Experimental results were used to find ternary interaction parameters by applying the Redlich Kister Muggianu model for substitutional solutions, and consequently a full set of parameters describing the concentration dependence of the enthalpy of mixing was derived. The experimental results indicate that the heat of mixing in this system is temperature independent, at least in the measured temperature range.
Compounds
# Formula Name
1 Au gold
2 Ag silver
3 Ga gallium
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
  • 3
  • 1
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 64
  • POMD
  • 2
  • 3
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 36
  • POMD
  • 2
  • 3
  • 1
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 217