ANODIC OXIDATION OF ZR-NIINTERMETALLICS IN ALKALINE ELECTROLYTES AFTER SURFACE TREATMENT WITH ATOMIC HYDROGEN UNDER CATHODIC POLARIZATION

摘要

The influence of surface treatment of high-capacity hydrogen sorbents (Zr-Ni intermetallics) with atomic hydrogen under cathodic polarization on their oxidation in a 30% KOH solution is studied. It is shown that no passivation film forms on ZrNi_5 near the stationary potential under cathodic polarization, which is not the case with Zr_2Ni and ZrNi. It is established that surface treatment with atomic hydrogen under cathodic polarization increases the rate of anodic oxidation of Zr_2Ni -> ZrNi ->ZrNi_5.