Relation between the solid-liquid interphase energies and the effective interaction parameters in heteronuclear metallic composites

The possibility of determining the interphase free energies in two-phase bi nary metallic systems from experimental data on the integral reaction chara cteristic is considered. For pairs of solid and liquid metals characterized by similar properties, a relation between the interphase free energy and t he mutual-exchange energy analogous to the Stefan formula is approximately satisfied. With marked differences between the surface energies of the init ial simple materials when the dimensional factor is not dominant, an expres sion allowing the temperature dependence of the interphase energy to be tak en into account may be employed.