Concentration dependence of the bulk and surface properties of liquid AlZn alloys at 1000 K

Abstract

The properties of mixing of the segregating liquid AlZn alloys at 1000 K have been investigated using the joint effect of size ratio and enthalpic contribution as well as entropic effect. The theoretical values of the bulk properties i.e. thermodynamic properties such as excess free energy of mixing, free energy of mixing, entropy of mixing, heat of mixing as well as the structural properties like concentration-concentration partial structure factor (or concentration fluctuations in the long wavelength limit) and short-range order parameter have been compared with the corresponding experimental data available in the literature. Again Butler model has been applied to study the surface properties such as the surface concentration, surface tension and surface concentration-concentration partial structure factor (or surface concentration fluctuations) of liquid AlZn alloys at 1000 K. The theoretical data of the surface tension have been compared with the experimental data available in the literature which show a qualitative agreement.