Modeling and experimental measurements of the surface tensions of Cu-Pb-Fe alloys

In the paper, a model enabling calculation of surface tensions of liquid ternary Cu-Pb-Fe alloys, on the basis of the densities (molar volumes) of the solution components as well as the surface tensions and the thermodynamic properties of the adequate binary alloys, has been proposed. Basing on the experimental results, obtained with the use of the sessile drop method for seven Cu-Pb-Fe alloy compositions, the proposed surface tension model has been verified.