Peculiarities of structural changes in Pd and Pd-alloys

Abstract

It has been discovered that kinetics of structural changes in Pd and Pd-alloys under the influence of dissolved hydrogen seems to be non-trivial. As a rule, structural changes in these systems include correlation changes of co-existing phases concentration and the defect structure character. These changes have the stage character. Basic stages are: incubation period, quick degassing, temporal stabilization and post-stabilization period. The structural changes and phase transformation in Pd-M-H kinetics happens to be non-monotonous (oscillating or stochastic). Such time dependence can be observed during tens thousand hours. The hypothesis based on the ideas of non-equilibrium dynamics and specific attributes of hydrogen interaction with matrix defect and atoms in Pd-systems has been offered in order to explain discovered phenomena.