ABSTRACT

Equilibrium ................................................................................... 293

10.1.3 Two-Phase Fields on Binary Phase Diagrams............................. 297

10.1.4 Three-Phase Equilibria ................................................................. 305

10.1.5 Intermediate Phases ...................................................................... 308

10.1.6 Metastable Phase Diagrams.......................................................... 314

10.2 Thermodynamic Models for Binary Phase Diagrams .............................. 315

10.2.1 Ideal Solution Models for Phase Diagrams ................................. 316

10.2.2 Regular Solution Model for Phase Diagrams .............................. 319

10.2.3 The Midrib Curve ......................................................................... 323

10.2.4 Pattern of Regular Solution Phase Diagrams with

Two Phases ................................................................................... 326

10.2.5 Diagrams with Three or More Phases.......................................... 327

10.2.6 Modeling Phase Diagrams with Line Compounds ...................... 330

10.3 Thermodynamic Models for Three Component Systems......................... 334

10.4 Calculation of Phase Diagrams in Potential Space................................... 337

10.5 Computer Calculations of Phase Diagrams .............................................. 339

10.6 Summary.................................................................................................... 342

References............................................................................................................. 347

A phase diagram is a map of the equilibrium states for the phase forms and their

combinations that may exist in any system. A point in this space, which represents a

state of the system that is of interest in a particular application, lies within a specific

domain on the map. Reading the map then tells you that, at that state when it comes

to equilibrium:

1. What phases are present.