Abstract
Lattice defects induced by hydriding in pure Pd have been studied by means of positron lifetime spectroscopy. Component analyses of positron lifetime spectra show that a surprising amount of vacancies together with dislocations are generated by the hydriding at room temperature. Vacancy migration in pure Pd after hydriding is observed around 378 K . Dislocations are much more stable and its migration is observed around 873 K . During the vacancy recovery process, secondary defects, that is, dislocation loops are formed.
