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    Corrosion protection properties afforded by an in situ electropolymerized polypyrrole layer on CuZn


    Fenelon, Anna M. and Breslin, Carmel B. (2003) Corrosion protection properties afforded by an in situ electropolymerized polypyrrole layer on CuZn. Journal of the Electrochemical Society, 150 (11). B540-B546. ISSN 0013-4651

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    Abstract

    Adherent polypyrrole films were electropolymerized from a near-neutral sodium oxalate solution at a CuZn electrode. The growth of these films was facilitated by the initial oxidation of the CuZn electrode in the oxalate solution to generate a zinc-containing copper(II) oxalate pseudopassive layer. This layer was sufficiently protective to inhibit further dissolution of the CuZn electrode and sufficiently conductive to enable the electropolymerization of pyrrole at the interface, and the generation of an adherent polypyrrole film. These films exhibited significant corrosion protection properties in acidified and neutral 0.1 mol dm−3 NaCl solutions. On continued immersion in these solutions, the polymer films lost some of their corrosion-protection properties, but still remained stable, offering good corrosion protection to the CuZn substrate.

    Item Type: Article
    Keywords: copper alloys; zinc alloys; corrosion protective coatings; electrochemistry; polymerisation; polymer films; oxidation;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 7936
    Identification Number: https://doi.org/10.1149/1.1618225
    Depositing User: Dr. Carmel Breslin
    Date Deposited: 17 Feb 2017 17:08
    Journal or Publication Title: Journal of the Electrochemical Society
    Publisher: Electrochemical Society
    Refereed: Yes
    Funders: Enterprise Ireland (EI), Wexford County Council
    URI:

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