Improved EIS Analysis of the Electrochemical Behaviour of Carbon Steel in Alkaline Solution

Steady-state polarization curves, X-ray photoelectron spectroscopy, and impedance spectroscopy were used to explore the electrochemical properties for carbon steel in alkaline electrolytes. The complex-capacitance representation allowed determination of a capacitance value at high frequency, from wh...

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Bibliographic Details
Published in:Electrochimica acta 2017-08, Vol.246, p.924-930
Main Authors: Chakri, S., Frateur, I., Orazem, M.E., Sutter, E.M.M., Tran, T.T.M., Tribollet, B., Vivier, V.
Format: Article
Language:English
Subjects:
Capacitance
Carbon steel
Carbon steels
Chemical Sciences
Complex-capacitance plot
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrolytes
Film thickness
Other
Oxide coatings
Oxide film
Power-law model
Studies
X-rays
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Summary:Steady-state polarization curves, X-ray photoelectron spectroscopy, and impedance spectroscopy were used to explore the electrochemical properties for carbon steel in alkaline electrolytes. The complex-capacitance representation allowed determination of a capacitance value at high frequency, from which the oxide film thickness could be estimated. These results are in good agreement with values obtained using the power-law model, providing a single mathematical model that is shown to apply in both the anodic and cathodic domains for the characterization of an oxide layer.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2017.06.096