ELECTROCHEMICAL AND CORROSION BEHAVIOR OF NITROGEN AND BORON IMPLANTED ARMCO IRON

The electrochemical behavior and pitting corrosion resistance of ARMCO iron specimens implanted with nitrogen or boron ions have been studied. The electrochemical measurements were performed in different solutions in order to characterize material behavior under most usual work conditions. The implantation affects the anodic dissolution of iron, lowering the intergranular attack and enhancing the protective capacity of the oxide layers, modifying the pit nucleation and growth. Scanning Electron Microscopy (SEM) was used in order to study the surface morphology.