The enthalpies of mixing of liquid (Co + Cu + Zr) alloys have been determined using the high-temperature isoperibolic calorimeter. The measurements have been performed along three sections (xCo/xCu = 3/1, 1/1, 1/3) with xZr = 0 to 0.55 at T = 1873 K. Over the investigated composition range, the partial mixing enthalpies of zirconium are negative. The limiting partial enthalpies of mixing of undercooled liquid zirconium in liquid (Co + Cu) alloys are ( 138 +- 18) kJ mol 1 (the section xCo/xCu = 3/1), ( 155 +- 10) kJ mol 1 (the section xCo/xCu = 1/1), and ( 130 +- 22) kJ mol 1 (the section xCo/xCu = 1/3). The integral mixing enthalpies are sign-changing. The isenthalpic curves have been plotted on the Gibbs triangle. The main features of the composition dependence of the integral mixing enthalpy of liquid ternary alloys are defined by the pair (Co + Zr) and (Cu + Zr) interactions.
Compounds
#
Formula
Name
1
Co
cobalt
2
Cu
copper
3
Zr
zirconium
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.