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Interrelation between partial reactions during alternating-current polarization of copper in chloride environments

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Abstract

Infralow-frequency alternating-current polarization of a copper electrode in chloride environments causes an increase in the pH of a near-electrode layer, as well as the concentration of hydroxide ions adsorbed at the electrode, during the cathodic half-period. This facilitates the oxidation of copper during the subsequent anodic half-period and changes the character of the oxidation products, that is, instead of soluble, insoluble compounds form. During the anodic half-period, consumption of hydroxide ions restores the initial pH in a near-electrode layer. The oxidation products of copper may become soluble again.

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Authors and Affiliations

  1. Voronezh State University, Universitetskaya pl. 1, Voronezh, 394006, Russia

    O. Yu. Kuksina, V. Yu. Kondrashin & I. K. Marshakov

Authors
  1. O. Yu. Kuksina
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  2. V. Yu. Kondrashin
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  3. I. K. Marshakov
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Additional information

Original Russian Text © O.Yu. Kuksina, V.Yu. Kondrashin, I.K. Marshakov, 2006, published in Zashchita Metallov, 2006, Vol. 42, No. 2, pp. 158–162.

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Kuksina, O.Y., Kondrashin, V.Y. & Marshakov, I.K. Interrelation between partial reactions during alternating-current polarization of copper in chloride environments. Prot Met 42, 144–148 (2006). https://doi.org/10.1134/S003317320602007X

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  • DOI: https://doi.org/10.1134/S003317320602007X

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