Thermodynamic modelling of metal–hydrogen systems using the Calphad method

Highlights: • The Calphad method is described. • Its application to metal–hydrogen systems is detailed. • Specific examples are given. - Abstract: We show the application of the Calphad method to the phase diagram and thermodynamic description of the metal–hydrogen systems. The basics of the technique and selected examples will be presented demonstrating how, specifically, in the case of metal–hydrogen systems, it is able (i) to describe simple systems in a self-consistent way and (ii) to predict phase equilibrium in multi-component systems