Thermodynamics of binary solutions of the eutectic type with several intermediate phases of constant composition

An universal method is proposed for calculating the phase diagrams of binary solutions with several intermediate phases of constant composition. The proposed method is based on the nonlinear transformations of the concentration axes and makes it possible to correctly reduce the calculation of the phase diagrams with several intermediate phases to a sequence of phase diagrams of individual subsystems. The thermodynamics of binary solutions of the eutectic type with several intermediate phases of constant composition is described using the proposed method within the framework of the generalized lattice model. The results of the calculations performed are compared with phase diagrams of real binary solutions