Abstract: Abstract In a previous work, we observed that, during cyclic potentiodynamic curves of cathodic polarisation (from 0.00 to −1.25 V/SCE, 5 mV s −1 ) in chromic acid solution of industrial composition, ARMCO iron undergoes a pitting corrosion, while carbon steels undergo a selective ferritic corrosion. Blisters of pure iron were also observed on ARMCO iron electrodes surface. These occurrences suggest a direct participation of the metal substrate to the overall reaction of reduction of the chromic acid to chromium metal. Therefore, the chemic...
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Topics: 
Metallurgy
Inorganic chemistry