  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.
