APPLICATION OF TWO-DIMENSIONAL BINARY SYSTEM TO STUDY CERTAIN PHASE DIAGRAMS

To extend the Collins' model of two-dimensional system into binary substitutional system, its Gibbs' function and free energy may be evaluated and then the equation for determination of binary phase equilibrium curve may be obtained. Certain common phase diagrams were investigated, as well as a concrete calculation was made of the "cigar" phase diagram. The obtained results are quite analogous to the behaviour of the three-dimensional ones.