Synthesis of azeotropic and two terminal solid solution type binary diagrams

Abstract

Synthesis of azeotropic and two terminal solid solution type phase diagrams has been carried out. Solution models used for the synthesis range from ideal to regular,quasi-chemical and surrounded atom models. In general, it is observed that the regular solution model is satisfactory, though the quasi-chemical model shows better approximation to experimentally determined diagrams. Synthesis based on the surrounded atom model shows marked deviations from that of the experimental diagrams. The discrepancy may be due to the errors in the calculations of the vibrational frequencies of the central atom for different configurations.