LaNi₅合金中のプロチウムの拡散

抄録

Diffusion of protium in the α phase (solid solution), the α′ phase (α phase dehydrided from the β phase) and the β phase (hydride) of LaNi₅-H alloys was studied by the desorption method. It was observed that the diffusion coefficient of protium in the β phase was a little higher than that in the α phase and that these were much higher than that in the α′ phase. The difference between the diffusion coefficients in the three phases is attributed to the difference in the protium concentration between the α phase and the β phase and to the difference in the trapping density between the α phase and the α′ phase.