With the members of the Associated Phase Diagram and Thermodynamics Committee and COST Action 531 there were initiated in the Institute of Metallurgy and Materials Science the systematic measurements of the surface tension and density by the maximum bubble presure and dilatometric method, respectively. The experiments were performed for pure metals (Ag, Bi, In, Sb, Sn, Zn ) and for some their binary alloys at the entire range of concentrations, while for multicomponent systems only for low temperature eutectics Ag-Sn and Ag-Cu-Sn with different additions. Last year there were initiated works on the database of physical properties of lead-free soldering materials basing on the data measured in the Institute of Metallurgy and Materials Science as well as those available in literature. The experimental surface tension data are compared with those obtained from Butler’s model using the excess Gibbs energies of alloy components together with molar volume and surface tension of pure metals.
This work is supported by the Ministry of Scientific Research and Information Technology of Poland.