The Calculation of Unary High-Pressure Phase Diagrams and the Boundary Theory of p-T Phase Diagrams of Multicomponent Systems

Abstract

The determination of high-pressure phase diagrams, especially those of the multicomponent phase diagram type, is generally quite difficult. Up until now, most experimentally determined phase diagrams at high-pressure are unary in type. The number of published, high-pressure phase diagrams covering binary alloy systems has been rather small. COMPOUND AND ALLOY UNDER HIGH PRESSURE: A HANDBOOK [Tonkov, 1998] has presented information on about 890 binary systems, along with some data on the behavior of 1153 “pseudo” binary and ternary systems, “revealed” up to 1995. This book is the most complete reference work concerning the behavior and related data on alloys exposed to high pressures up till now. Besides the alloy systems, there are also many experimental results now available on the high-pressure, phase equilibrium of other multicomponent systems, mostly on the oxide systems as studied in geology etc.