INFLUENCE OF HEAT TREATMENT ON THE HYDROGEN-SORPTION PROPERTIES OF Ti0.475Zr0.3Mn0.225 EUTECTIC ALLOY DOPED WITH VANADIUM

摘要

The Sieverts method is used to study the sorption properties and kinetic parameters of the processes of hydrogenation and dehydrogenation of annealed eutectic alloys of the Ti-Zr-Mn-V system. It is shown that, independently of the structure and chemical composition of the original cast alloys, heat treatment leads to the coagulation of the structural components of the eutectic and the formation of coarse phase aggregates. It is established that, by increasing the reaction surface for the dissociation of hydrogen molecules, we can improve the sorption capacity of each phase and alloys as a whole at room temperature under relatively low pressure (0.6MPa). In this case, a solid solution based on titanium absorbs hydrogen with the same kinetics as the kinetics of sorption of hydrogen by intermetallic alloy and reaches a high hydrogen capacity at room temperature.