Investigation of surface tension and viscosity properties of liquid Al–Au binary alloys

The experimentally obtained isothermal surface tensions associated with liquid binary alloy Al-Au were obtained as the functions of temperature and composition. The obtained results are compared with theoretical predictions from the Eyring, Guggenheim, Improved Guggenheim, Butler, Ideal Butler, Ideal Solution, Kohler, Egry et al. and Chatain models. The slopes of surface tension with respect to temperature showed negative values. In addition, the experimental data on the viscosity were compared with those from different models, such as Sato, Gasior, Kaptay, Iida-Ueda-Morita, Seetharaman and Sichen, Kozlov-Romanov-Petrov, Kohler, MD (Molecular Dynamic), and Hirai models. The calculated square mean root deviation values of the models are given with respect to both surface tension and viscosity. The best agreement of the surface tensions among chosen models was obtained in the Kohler model for all ranges of Al and Au compositions, respectively.