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    Organic molecules showing the characteristics of localised corrosion aggravation and inhibition

    Access Status
    Fulltext not available
    Authors
    Tan, Yong
    Mocerino, Mauro
    Paterson, T.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Tan, Yongjun and Mocerino, Mauro and Paterson, Tristan. 2011. Organic molecules showing the characteristics of localised corrosion aggravation and inhibition. Corrosion Science. 53: pp. 2041-2045.
    Source Title
    Corrosion Science
    DOI
    10.1016/j.corsci.2011.01.042
    ISSN
    0010938X
    School
    Department of Applied Chemistry
    Remarks

    Copyright © 2011 Elsevier Ltd.

    URI
    http://hdl.handle.net/20.500.11937/39893
    Collection
    • Curtin Research Publications
    Abstract

    The behaviour of imidazoline and an acid functionalised resorcinarene as steel corrosion inhibitors in carbon dioxide (CO2)-saturated brine solutions has been studied using an electrochemically integrated multi-electrode array namely the wire beam electrode (WBE). Both imidazoline and resorcinarene acid provided excellent inhibition to general CO2 corrosion; however imidazoline was found to aggravate localised corrosion by creating a small number of major anodes that focused on a small area of the WBE surface, leading to highly concentrated anodic dissolution. The resorcinarene acid showed distinctively different behaviour by generating a large number of minor anodes randomly distributing over the WBE surface, leading to insignificant general anodic dissolution. These results indicate that resorcinarene acid provided effective localised corrosion inhibition by promoting a random distribution of insignificant anodic currents.

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