Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

With the use of the discharge crucible (DC) method, the density, surface tension and viscosity of Pb-Sb liquid alloys were determined. The experiments were performed in the temperature range between 573 - 1050 K. The measurements were conducted in a glove-box filled with high purity argon, which was continuously circulating between the glove-box and purification system. The measurements were conducted for four alloys of the composition 16.75, 40, 60 and 90 (at. %) of Sb. The experimental data of the surface tension and viscosity were compared with those from modelling. The new experimental data and the corresponding model-predicted values exhibit good agreement, and only small differences in linear changes between the surface tension of Pb and Sb can be observed. This can be attributed to small negative deviations of the thermodynamic properties from the Raoult law and a relatively small difference between the surface tension of pure components. In the case of viscosity, the measured data were in excellent agreement with those calculated from one of models and those measured earlier. The obtained results of the density of Pb-Sb liquid alloys were only a little higher than the density of ideal solutions.