EFFECT OF DODECYLAMINE ON THE CORROSION BEHAVIOR OF ZINC IN AMMONIUM-CHLORIDE SOLUTION

Corrosion studies showed normal dodecylamine (NDDA) to be effective as an anodic inhibitor for zinc corrosion in ammonium chloride media. It s inhibiting effect was found to be associated with adsorption on acti ve centres of the zinc surface. The adsorption is potential dependent and the inhibiting effect diminishes with positive shift of the zinc e lectrode during discharge. This feature makes it possible for NDDA to be used in zinc-manganese dry batteries as a substitute for the enviro nmentally harmful mercury (salt) inhibitor.