Physical chemistry of oxide systems (reactions mechanisms, thermal phase equilibria, structure-properties correlations).

Geochemists and mineralogists have studied hydrothermal phase equilibria since the beginning of the twentieth century.

It is frequently applied in the field of chemical engineering to calculate phase equilibria.

To describe phase equilibria over a large temperature regime, i.e. larger than 50 K, the interaction parameter has to be made temperature dependent.

The dynamic nature of phase equilibria can be understood by considering them in the light of the kinetic theory.

Experimental data on the influence of temperature and pressure on phase equilibria can be represented by phase diagrams.

In this section we shall be examining phase equilibria of some heterogeneous mixtures.

However, we shall be principally interested in phase equilibria involving homogeneous mixtures-that is solutions.

Both models are used for the prediction of thermodynamic properties, especially the estimation of phase equilibria.

According to Gibbs' rules of phase equilibria, these unique crystalline phases will be dependent on intensive variables such as pressure and temperature.