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    Activation of pure Al in an indium-containing electrolyte - an electrochemical noise and impedance study


    Breslin, Carmel B. and Rudd, Amy L. (2000) Activation of pure Al in an indium-containing electrolyte - an electrochemical noise and impedance study. Corrosion Science, 42 (6). pp. 1023-1039. ISSN 0010-938X

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    Abstract

    The activation of aluminium in an acidic indium-containing electrolyte has been studied using electrochemical noise measurements. The average pit-growth rate, measured under freely corroding conditions, was comparable in the presence and absence of indium. However, pit growth times were considerably higher in the presence of indium. The initial breakdown process followed a pseudo-first order process with a rate constant almost a factor of two greater in the case of the indium-containing solution. Analyses of the current–noise data in the frequency domain yielded spectral noise plots, which agreed well with impedance spectra measured under similar conditions. Good agreement was also obtained between Full-size image (<1 K), which is defined as the ratio of the standard deviation in the potential noise signal to the standard deviation of the current noise signal, and the zero frequency limit of the impedance.

    Item Type: Article
    Keywords: Aluminium activation; Indium; Electrochemical noise data;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 7939
    Identification Number: https://doi.org/10.1016/S0010-938X(99)00128-6
    Depositing User: Dr. Carmel Breslin
    Date Deposited: 17 Feb 2017 17:07
    Journal or Publication Title: Corrosion Science
    Publisher: Elsevier
    Refereed: Yes
    Funders: Enterprise Ireland (EI)
    URI:

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