Electrochemical analysis demonstrates resistive porous film formation during iron dissolution in neutral chloride media, indicating that electrodissolution follows the Bockris mechanism.
The anodic transient and steady‐state behavior of iron in neutral chloride solutions containing benzotriazole was examined by a potential pulse technique. The results suggest the formation of a resistive film on iron at open circuit. The electrical resistance of the film ( R sf ) was dependent on the concentration, and decreased with the duration of anodic polarization and the magnitude of the current. Where ia is the anodic current at steady state, varied linearly with the anodic potential with a slope of 80 mV/decade, and the plot was independent of the concentration of . A porous film model is proposed to interpret the electrochemical behavior. The Bockris reaction mechanism is shown to be valid for both the anodic and cathodic reactions.
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Asakura et al. (1974) studied this question.
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