Phenomenological Calculation of the Ll0-Disorder Phase Equilibria in the Co-Pt System

Abstract

The phenomenological calculation of the Ll0-disorder phase equilibria in the Co-Pt binary system is attempted by using the Lennard-Jones type potential combined with the tetrahedron approximation of the ClusterVariation Method. Thermal vibration effects based on the Debye-Griineisen model are introduced into the calculation scheme. The calculated thermodynamic properties and phase diagram are presented and the thermal vibration effects on phase stability are examined. Copyright © 1994, The Japan Institute of Metals. All rights reserved.