Assessment of Thermodynamic and Structural Properties of AgAl Melts at 1273 K

Abstract

The thermodynamic behavior of binary melts of AgAl molten system at 1273 K are analyzed in the framework of four-parameter model. For this, the model parameters are required which are evaluate on utilizing the experimental data of excess free energy of mixing of AgAl system at 1273 K. An excellent harmony is observed between theory and corresponding experimental data available in the literature on the basis of concentration of Ag. Again, on assuming the temperature dependence of the model parameters, the entropy of mixing and heat of mixing for AgAl melts are analyzed theoretically in the framework of four-parameter model. Further, the theoretical data of concentration fluctuations are employed to explain the short-range order parameter and diffusivity ratio of AgAl melts at 1273 K. The results reveal the ordering nature of AgAl melts at 1273 K and asymmetries in free energy of mixing and entropy of mixing, and asymmetries in excess free energy of mixing and heat of mixing for AgAl melts at 1273 K are successfully explained.