Mixing properties in the In-Pb and In-Mg liquid alloys

The mixing properties of liquid alloys In-Pb and In-Mg have been investigated at temperatures of 873 and 900 K, respectively, using a theoretical model that takes into consideration the formation of complexes in liquid alloys. The energetics obtained from the study were used to determine the concentration-concentration fluctuation at the long wavelength limit Scc(0), the mutual diffusivities, surface tension and surface concentration for the alloys throughout the concentration range. Our studies showed that mutual diffusivity values decreased in phase segregating In-Pb while they increased in compound-forming In-Mg with increasing concentration of up to 0.6 of the atomic fraction of indium.