The formation enthalpy of the bLi2Zn3, bLi2Zn5 and bLiZn4 intermetallic phases and the integral enthalpy of mixing of liquid Li Zn alloys were measured with the use of two calorimetric techniques. The direct reaction calorimetric method was used for the determination of the formation enthalpy of the bLi2Zn3, bLi2Zn5 and bLiZn4 intermetallic phases, and the obtained values equal: 16.7 +- 0.5 kJ/mol at., 19.0 +- 0.6 kJ/mol at., and 14.2 +- 0.6 kJ/mol at., respectively. The integral molar enthalpies of mixing for the Li Zn liquid alloys were determined by means of drop calorimetry in three separate series at 814 K. The obtained experimental values are negative in the entire range of concentrations. The minimum of the integral enthalpy of mixing was observed for 0.3790 mole fraction of lithium and it equals 12.3 kJ/mol Based on the data of this study and those available in the literature, the interaction parameters of the Redlich Kister equation for the liquid Li Zn phase were calculated by the least square method.
Compounds
#
Formula
Name
1
Li
lithium
2
Zn
zinc
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
Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid