Calculation of equilibrium in the hydrogen-intermetallic compound-hydride system in a wide pressure range

Method for calculating the hydrogen-intermetallic compound (IMC)-hydride equilibria, allowing one from data obtained at room temperatures to calculate equilibrium pressures of hydride dissociation and reaction heat at other temperatures, is developed. The method is tested when calculating equilibria in hydride systems based on LaNi5, LaNi4Mn, PrNi5, LaNi4.7Al0.3 (IMC) and others. It is shown that the calculation produces a good agreement with the experiment which allows one to apply the method proposed to evaluate the applicability of various IMC in the hydrogen thermosorption compression technology