Electrodissolution Kinetics of Iron in Chloride Solutions

The dissolution kinetics of iron in acidic chloride media has been investigated by potentiostatic polarization. An anodic Tafel slope of approximately 70 mV/decade was obtained. An increase in the chloride ion concentration, at a constant pH, increased the dissolution rate of iron. The following empirical rate expressions for iron dissolution and hydrogen evolution have been determined from the experimental data