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Evaluation of corrosion inhibitors performance using real-time monitoring methods

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Abstract

The implementation of real-time corrosion-monitoring techniques can provide a reliable mechanism for detecting the overall effectiveness of chemical treatment programs and contribute to the selection and implementation of an adequate corrosion inhibitor system. Inadequate corrosion monitoring can result in an increase of both uniform and localized (pitting) corrosion activities which can lead to premature material failures. The present research was undertaken to ascertain whether linear polarization resistance (LPR), harmonic analysis (HA), and electrochemical noise (EN) in combination are suitable for the study of performance of corrosion inhibitors under a wide variety of conditions; for example, in the absence and the presence of hydrocarbons with or without the addition of corrosion inhibitors. The findings showed questionable results regarding the usefulness of the pitting factor derived from EN and HA data. In addition, statistical parameters were obtained, such as skew and kurtosis, and these results were compared with the pitting factor.

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Notes

  1. SmartCET is a trade mark of Intercorr International, Inc.

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Acknowledgments

The authors would like to thank the Consejo Nacional de Ciencia y Tecnología (CONACyT), Mexico, for financial support to conduct this study. The authours would also like to express their gratitude to Dr. M. Casales-Diaz for her assistance in this study.

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Correspondence to J. G. Chacon-Nava.

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Villamizar-Suárez, W., Malo, J.M., Martínez-Villafañe, A. et al. Evaluation of corrosion inhibitors performance using real-time monitoring methods. J Appl Electrochem 41, 1269–1277 (2011). https://doi.org/10.1007/s10800-011-0333-9

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  • DOI: https://doi.org/10.1007/s10800-011-0333-9

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