NUMERICAL MODELING OF THE AG-CA AND CU-CA SYSTEMS

A minimum of experimental thermodynamic information (phases diagram, f ormation enthalpies and entropies of stoichiometric compounds and Gibb s energies of the liquid) of Ag-Ca and Cu-Ca systems is sufficient to perform a numerical modelling of these systems. A complete set of ther modynamic characteristics of Ag-Ca and Cu-Ca systems is determinated w ith the ''Nancyun'' program using a Legendre polynomial development of the Gibbs excess function of the liquid phase. Calculated phase diagr ams of the systems are proposed.