ABSTRACT

The yttrium partial enthalpies of mixing (mix -HY) and the integral enthalpies of mixing (mixH) of liquid Ga Ge Y alloys have been determined by high-temperature mixing calorimetry for five sections with constant ratios of Ga and Ge at 1760 K. Plots of concentration dependence of mix -HY/(1 - xY)2 show sharp inflections, which correspond to transition of the liquid alloys into heterogeneous state and can be used for determination of liquidus surface. Furthermore, the mixH has been estimated in the ternary system using seven geometric models and the Bonnier model has been chosen as the most adequate one. The differences between the experimental and model integral enthalpies of mixing have been described by polynomial concentration dependence. The possible contribution of binary and ternary intermetallide compounds into the thermodynamics of the liquid Ga Ge Y alloys has been considered.

Compounds

#	Formula	Name
1	Ga	gallium
2	Ge	germanium
3	Y	yttrium

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	Partial molar enthalpy, kJ/mol - 1 ; Liquid	Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Drop calorimetry	45
POMD	1 2 3	Partial molar enthalpy, kJ/mol - 3 ; Liquid	Solvent: Mole fraction - 1; Liquid Mole fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Drop calorimetry	213

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Calorimetric study of enthalpies of mixing in liquid gallium germanium yttrium alloys

Kanibolotsky, D. S.[Dmitry S.], Bieloborodova, O. A.[Olena A.], Lisnyak, V. V.[Vladyslav V.]

ABSTRACT