Electrochemical impedance spectroscopy (EIS) was used to study carbon dioxide (CO2) corrosion product scales and their effects on further CO2 corrosion. Objectives were to determine the suitability of EIS for studying corrosion scales and to investigate the influence of environmental factors on scale formation. EIS provided useful information about protective abilities and electrochemical properties of corrosion scales. CO2 corrosion scales formed at high-temperature and pressure provided better protection than those formed at low-temperature and pressure. The level of protection of the scale formed at higher temperature and pressure increased with exposure time. EIS results were compared with coupon weight-loss measurements. Scales were analyzed using a combination of Fourier transform infrared (FTIR) analysis, x-ray diffraction (XRD), and electron microscopy.


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    Title :

    Electrochemical impedance spectroscopy and surface characterization techniques to study carbon dioxide corrosion product scales


    Additional title:

    Elektrochemische Impedanzspektroskopie und Methoden zur Oberflächencharakterisierung für die Untersuchung der Korrosionsproduktablagerungen bei der Kohlendioxidkorrosion


    Contributors:
    Kinsella, B. (author) / Tan, Y.J. (author) / Bailey, S. (author)

    Published in:

    Corrosion, Houston ; 54 , 10 ; 835-842


    Publication date :

    1998


    Size :

    8 Seiten, 13 Bilder, 22 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English