Summary
Studies have been made on the nonstationary electrochemical processes at an NFS-auxiliary electrode-solution phase boundary. The maximum shift in the electrode potential and in the current density on interaction with the solution may be largely determined by the electrolyte type and pH. Comparison of measurements and calculations shows that the current density in a galvanic pair when NFS is formed exceeds that in the oxidation of iron alone. It is suggested that at the start of interaction, hydroxyl ions are discharged at a high rate with the formation of oxygen, whose specific contribution to the overall anodic current density is much greater than the current density due to the entry of the iron into solution. The data provide a new interpretation of the corrosion cracking mechanisms for metals in various electrolytes.
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Translated from Fiziko-Khimicheskaya Mekhanika Materialov, Vol. 25, No. 3, pp. 38–43, May–June, 1989.
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Bogdan, V.G., Dmitrash, B.F. Nonstationary processes on freshly exposed metal surfaces in various electrolytes. Mater Sci 25, 265–269 (1989). https://doi.org/10.1007/BF00726220
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DOI: https://doi.org/10.1007/BF00726220