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    Electrochemical investigation of the role of cl- on localized carbon dioxide corrosion behavior of mild steel

    Access Status
    Fulltext not available
    Authors
    Jiang, X.
    Nesic, S.
    Kinsella, Brian
    Brown, B.
    Young, D.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Jiang, X. and Nesic, S. and Kinsella, B. and Brown, B. and Young, D. 2013. Electrochemical investigation of the role of cl- on localized carbon dioxide corrosion behavior of mild steel. Corrosion. 69 (1): pp. 15-24.
    Source Title
    Corrosion
    DOI
    10.5006/0620
    ISSN
    0010-9312
    School
    School of Chemical and Petroleum Engineering
    URI
    http://hdl.handle.net/20.500.11937/56418
    Collection
    • Curtin Research Publications
    Abstract

    Electrochemical behavior of localized carbon dioxide (CO2) corrosion of X65 mild steel at 80°C in 0.1, 1.0, 10, and 20 wt% sodium chloride (NaCl) solutions have been investigated using electrochemical techniques including linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS). Surface morphology of specimens was observed using scanning electron microscopy (SEM). Pit depth and its corresponding 3D optical measurement were undertaken using infinite focus microscopy (IFM). The results showed that Cl- concentration had only a slight effect on general corrosion rate. It also revealed that increasing Cl- concentration did not accelerate the initiation of localized corrosion; localized corrosion rate did not change with increasing NaCl solution concentrations; and chemical dissolution of corrosion product film could initiate localized CO 2 corrosion. © 2013, NACE International.

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