VALENCE STATE OF HYDROGEN IN HYDRIDES OF INTERMETALLIC COMPOUNDS

The experimental data on the mechanism of hydride dispersion of interm etallic compounds of the LaNi5 type and the crystal structures of hydr ide phases based on these compounds were analyzed. A new approach was suggested and substantiated, which allows one to consider hydride disp ersion as a result of a redox process associated with the formation of H(delta-)hydride ions at concentrations of hydrogen in the solid hydr ide C-H greater than or equal to C-Hcr. The value of C-Hcr is determin ed by the redox potential of the reaction Hdelta+ + Mdelta- reversible arrow Hdelta'- + Mdelta'+.