Use of electrochemical impedance spectroscopy for study of CO2 corrosion prevention by batch treatment inhibitor films

Bailey, S., Tan, Y. J. and Kinsella, B. 1997, Use of electrochemical impedance spectroscopy for study of CO2 corrosion prevention by batch treatment inhibitor films, British corrosion journal, vol. 32, no. 1, pp. 49-55.


Title Use of electrochemical impedance spectroscopy for study of CO2 corrosion prevention by batch treatment inhibitor films
Author(s) Bailey, S.
Tan, Y. J.
Kinsella, B.
Journal name British corrosion journal
Volume number 32
Issue number 1
Start page 49
End page 55
Total pages 7
Publisher Maney Publishing
Place of publication West Yorks, England
Publication date 1997
ISSN 0007-0599
Keyword(s) bode phase angle plots
electrochemical impedance spectroscopy (EIS)
Summary Electrochemical impedance spectroscopy (EIS) was used to study and evaluate commercial batch treatment inhibitors which are used for protecting oil wells, gas wells, and pipelines from CO2 corrosion, focusing on the evaluation of inhibitor film persistency. It was found that theformation and deterioration of batch treatment inhibitor films were accompanied by typical impedance spectral changes. During the formation of inhibitor films, electrode impedance showed a rapid increase and the Bode phase angle plots also showed a sudden change. Thus, the formation of inhibitor film was a very fast process. During the deterioration of inhibitor films, electrode impedance showed a gradual decrease and the Bode phase angle plots showed changes which characterised the three stages of the inhibitor film deterioration process. The relationships between EIS and corrosion rate are discussed, including comparisons with weight loss measurements. Based on the experimental findings in the present work, a method is suggested for estimating the persistency of inhibitor films by monitoring the characteristic changes in the Bode phase angle plots and by measuring electrochemical charge transfer resistance at the second and third stages of the inhibitor film deterioration process.
Language eng
Field of Research 091207 Metals and Alloy Materials
030604 Electrochemistry
030301 Chemical Characterisation of Materials
Socio Economic Objective 870302 Metals (e.g. Composites, Coatings, Bonding)
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047765

Document type: Journal Article
Collection: School of Engineering
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