The rusts on the gauge face and non-gauge face of two rail steels (traditional C-Mn and novel Cu-Mo rail steel) exposed to a coastal location in India were characterised after two years of service to correlate with an apparent visual observation of a lower corrosion rate in the case of the Cu-Mo rails. Rust samples were characterised by X-ray diffraction, Fourier transform infrared spectroscopy and Mössbauer spectroscopy. X-ray diffraction patterns showed diffuse peaks indicating poorly crystallised rust phases, while the phases identified by the other techniques were gamma-FeOOH (lepidocrocite),alpha-FeOOH (goethite), Fe(3-x)O4 (magnetite), delta-FeOOH and alpha-Fe2O3 (haematite). The enhanced corrosion of the gauge face compared to non-gauge face for both rails and that of C-Mn rails compared to Cu-Mo rails was related to the higher amount of gamma-FeOOH and lower amount of Fe(3-x)O4.


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    Title :

    Characterisation of rust on microalloyed rail steel exposed to coastal location in India


    Additional title:

    Untersuchung von Rost auf mikrolegiertem Schienenstahl in Küstenatmosphäre Indiens


    Contributors:

    Published in:

    Publication date :

    2009


    Size :

    5 Seiten, 3 Bilder, 2 Tabellen, 29 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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