  Microscopic description in the study of immiscibility and segregating
properties of liquid metallic binary alloys has gained a renewed scientific and
technological interests during the last eight years for the physicists,
metallurgists and chemists. Especially, in understanding the basic mechanisms,
from the point of interionic interaction, and how and why segregation in some
metallic alloys takes place at and under certain thermodynamic state specified
by temperature and pressure. An overview of the theoretical and experimental
works done by different authors or groups in the area of segregation combining
electronic theory of metals, statistical mechanics and the perturbative
approach is presented in this review. Main attention in this review is focused
on the static effects such as the effects of energy of mixing, enthalpy of
mixing, entropy of mixing and understanding the critical behaviour of
segregation of alloys from the microscopic theoretical approach. Investigation
of segregating properties from the dynamic effects such as from the effects of
shear viscosity and diffusion coefficient is just becoming available. However,
we have restricted this review only on static effects and their variation of
impacts on different alloys.
