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    NanoSIMS investigation of passive oxide films on high-Cr cast iron

    Access Status
    Fulltext not available
    Authors
    Salasi, Mobin
    Stachowiak, Gwidon
    Stachowiak, G.
    Kilburn, M.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Salasi, M. and Stachowiak, G.B. and Stachowiak, G.W. and Kilburn, M.R. 2013. NanoSIMS investigation of passive oxide films on high-Cr cast iron. Corrosion Science. 67: pp. 298-303.
    Source Title
    Corrosion Science
    DOI
    10.1016/j.corsci.2012.11.003
    ISSN
    0010-938X
    URI
    http://hdl.handle.net/20.500.11937/4454
    Collection
    • Curtin Research Publications
    Abstract

    The discrete depth characteristics of thin passive oxide films were investigated using high-resolution electron microprobe and nanoscale secondary ion mass spectrometry (NanoSIMS). A novel NanoSIMS method involving a Cs layer deposition before Cs+ sputtering was employed for the first time to determine the elemental distribution at different sub-layers of a passive film. The film was formed in air on the surface of a multi-phase microstructure of high-chromium cast iron (HCCI). It was found that the film composition and thickness varied according to the underlying microstructure phase. Based on the microprobe and NanoSIMS results, the influence of the HCCI passive film thickness and composition on the localized passivity breakdown has been proposed.

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