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    Corrosion behaviour of nanocomposite TiSiN coatings on steel substrates

    Access Status
    Fulltext not available
    Authors
    Ahmed, M.
    Munroe, P.
    Jiang, Z.
    Zhao, X.
    Rickard, William
    Zhou, Z.
    Li, L.
    Xie, Z.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Ahmed, Mohammad Shoeb and Munroe, Paul and Jiang, Zhong-Tao and Zhao, Xiaoli and Rickard, William and Zhou, Zhi-Feng and Li, Lawrence Kwok Yan and Xie, Zonghan. 2011. Corrosion behaviour of nanocomposite TiSiN coatings on steel substrates. Corrosion Science. 53: pp. 3678-3687.
    Source Title
    Corrosion Science
    DOI
    10.1016/j.corsci.2011.07.011
    ISSN
    0010938X
    School
    Department of Imaging and Applied Physics
    URI
    http://hdl.handle.net/20.500.11937/32375
    Collection
    • Curtin Research Publications
    Abstract

    Nanocomposite TiSiN coatings were deposited on tool steels. Detailed mechanisms that govern the corrosion of these coated steels were revealed, following immersion tests in a 70% nitric acid solution. Pitting originated preferentially from coating defect sites and expanded with increasing immersion time. Both Young’s modulus and hardness measured by nanoindentation decreased as the corrosion damage intensified. A thin oxide layer formed from the thermal annealing of the as-deposited samples at 900 °C was found to be effective against corrosive attack. In addition, compressive residual stress was noted to suppress the propagation of corrosion-induced cracks. The role of residual stress in controlling the corrosion resistance of these ceramic-coated steels is clarified by finite element analysis.

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