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

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]

ABSTRACT