Thermodynamic properties of Eu–In alloys

The mixing enthalpies of liquid binary Eu–In alloys (0 < x< 0.66, 0.78 < x< 1) are determined by isoperibol calorimetry at 1170–1300 K. The thermodynamic properties of the liquid Eu–In alloys are described in the entire composition range using the model of ideal associated solution. The thermodynamic activities of components in the Eu–In melts demonstrate negative deviations from the ideal behavior, and the mixing enthalpies are characterized by significant exothermic effects. The minimum value of the mixing enthalpy is −35.1 ± 0.5 kJ/mol at x= 0.52 (T = 1300 K) and −41.2 ± ± 0.5 kJ/mol at x= 0.50 (T = 1170 K)

Thermodynamic properties of alloys in the binary Ca–Ge system

Mixing enthalpies of the liquid alloys in the binary Ca–Ge system were measured by isoperibolic solution calorimetry within the concentration ranges 0\ua

Thermodynamic properties of binary Al–Pr alloys

The mixing enthalpies of Al–Pr binary liquid alloys are measured in the ranges 0 < x < 0.15 at 1560 K and 0.46 < x < 1 at 1410–1670 K by isoperibol calorimetry. The Al–Pr binary melts are characterized by significant negative mixing enthalpies: ΔHAl−Prmin = –43.1 kJ/mol at x = 0.33 (at 1500 K, extrapolation onto the range of supercooled melts). The activities of components, entropies, Gibbs energies, and liquidus curve of the Al–Pr phase diagram are evaluated using the model of ideal associated solutions

The thermodynamic properties of Al-Si system melts

The thermochemical properties of Al-Si system melts were determined by an improved isoperibolic calorimetry method. The data obtained correlated with the reliable partial and integral enthalpies of mixing reported in the literature. The method developed was used to model the thermodynamic properties of melts with the use of the liquidus coordinates of the phase diagram of the Al-Si system. The modeled and experimental results were in close agreement with each other

Thermodynamic properties of binary CE–IN alloys

The mixing enthalpies of liquid binary Ce–In alloys (0 < x< 1) at 1500 K are determined by isoperibol calorimetry. The thermodynamic properties of the liquid Ce–In alloys are calculated for the entire composition range using the model of ideal associated solutions. The thermodynamic activities of melt components show negative deviations from the ideal behavior. The mixing enthalpies are characterized by significant exothermic effects. The minimum mixing enthalpies of the melts are –43.8 ± 0.2 kJ/mol at x= 0.57

Thermodynamic properties of liquid Fe-Sc alloys

The partial and integral mixing enthalpies of Fe-Sc melts are determined by calorimetry at 1873 K over the entire composition range. It is established that the minimum enthalpy of mixing is -12.4 ± 0.6 at x = 0.46 and the first partial enthalpies of mixing are Δ {H} {Sc} -43.8\pm 4.4 Δ {H}-{\mathrm{Fe}}^{\infty }=-38.1\pm 3.8 (kJ/mol). Thermodynamic properties of the Fe-Sc melts are calculated with the model of ideal associated solutions. It is found that the activities of components have negative deviations from parameters of ideal solutions

Thermodynamic properties of alloys of the binary In–La system

The thermochemical properties of melts of the binary In–La system were studied by the calorimetry method at 1250–1480 K over the whole concentration interval. It was shown that significant negative heat effects of mixing are characteristic features for these melts. Using the ideal associated solution (IAS) model, the activities of components, Gibbs energies and the entropies of mixing in the alloys, and the phase diagram of this system were calculated. They agree with the data from literature

Thermodynamic properties of alloys of the binary In–Yb system

The thermochemical properties of melts of the binary In–Yb system were studied by the calorimetry method at 1160–1380 K over the whole concentration interval. It was shown that significant negative heat effects of mixing are characteristic features for these melts. Using the ideal associated solution (IAS) model, the activities of components, Gibbs energies and the entropies of mixing in the alloys, and the phase diagram of this system were calculated. They agree with the data from literature