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An Electrochemical study of the formation of Benzotriazole surface films on Copper, Zinc and a Copper–Zinc alloy

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Abstract

The electrochemical behaviour of Cu, Cu–37Zn and Zn in benzotriazole (BTA) containing chloride solutions was studied and compared using potentiodynamic, cyclic voltammetry and electrochemical impedance spectroscopy. The presence of BTA in the chloride-containing solutions gave rise to higher breakdown potentials, significantly higher polarisation resistances and inhibited the formation of CuCl2 and zinc-containing corrosion products. These effects were observed for pure Cu, Cu–Zn and to a somewhat lesser extent pure Zn. The electrochemical impedance data were consistent with the formation of a polymeric BTA-containing layer for all three systems.

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Authors and Affiliations

  1. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co., Kildare, Ireland

    A.M. Fenelon & C.B. Breslin

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  1. A.M. Fenelon
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  2. C.B. Breslin
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Fenelon, A., Breslin, C. An Electrochemical study of the formation of Benzotriazole surface films on Copper, Zinc and a Copper–Zinc alloy. Journal of Applied Electrochemistry 31, 509–516 (2001). https://doi.org/10.1023/A:1017503031045

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  • DOI: https://doi.org/10.1023/A:1017503031045

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