Kinetic analysis of Mg-8Â mol%LaNi0.5 composite

The aim of this paper is to apply a new kinetic model in order to investigate kinetic mechanism of the hydriding kinetics at 553 K and hydrogen pressure range from 0.256 to 0.992 MPa in the two-phase (α-β) region of the Mg-8 mol%LaNi0.5 composition prepared by different methods. Much attention was put on the influence of the fabrication technique and the initial hydrogen pressure on hydriding kinetics of Mg-8 mol%LaNi0.5 composite. This model has been validated by comparison of our calculation results with experimental data. The hydriding kinetic mechanism of Mg-8 mol%LaNi0.5 was determined and the rate-limited step in the two-phase (α-β) region is hydrogen diffusion in the β phase.