  Computer simulations of contact melting and associated interfacial phenomena
in binary eutectic systems were performed on the basis of the standard
phase-field model with miscibility gap in solid state. It is shown that the
model predicts the existence of equilibrium three-phase (solid-liquid-solid)
states above the eutectic temperature, which suggest the explanation of the
phenomenon of phase separation in liquid eutectic observed in experiments. The
results of simulations provide the interpretation for the phenomena of contact
melting and formation of diffusion zone observed in the experiments with binary
metal-silicon systems.
