Application of the Quasi- parabolic and Quasi - paraboloidal Regulation of Intermediate Compounds in RE Binary and Ternary system

摘要

Based on principles of thermodynamics, it is derived that in a binary system a quasi -parabola regulation must be obeyed by the standard Gibbs free energy of formation of a compound. Extending to ternary system a quasi- paraboloid regulation also must be done. The stability of some intermetallic compounds in binary systems is decided.