THERMODYNAMICALLY BASED MELTING-CURVE EQUATION

An equation for the pressure dependence of the melting temperature based on thermodynamic principles has been developed, which generalizes the Simon-Glatzel equation and describes the rising and falling melting curves as well as curves with a maximum. The parameters appearing in the equation are identified in terms of the thermodynamic values. The equation accurately approximates the melting curves of different categories of substances over a large range of melting temperatures and pressures.