Investigation of corrosion inhibition of C38 steel in 5.5 M H3PO4 solution using Ziziphus lotus oil extract: an application model
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 11 December 2018
Issue publication date: 24 January 2019
Abstract
Purpose
This study aims to investigate the corrosion inhibition effect of extracted oil from Ziziphus lotus fruit on corrosion of C38 carbon steel in 5.5 M H3PO4 solution using potentiodynamic polarization and impedance techniques.
Design/methodology/approach
Oil composition was determined using gas chromatography, and the results showed that oleic and palmitic acids present approximately 84.0 per cent of its total chemical content. Electrochemical impedance spectroscopy (EIS) data were analyzed by adapting it to a well-developed electric circuit model. The inhibition efficiency of Z. lotus oil was calculated and compared using Tafel polarization and EIS.
Findings
Accordingly, the oil extract was found to act as an anodic type inhibitor. Furthermore, inhibition efficiency of Z. lotus oil extract increase with oil concentrations and achieve approximately 70.5 per cent at 3 g/L solution of Z. lotus oil.
Originality/value
The results obtained from different tested methods were in line, and the oil was able to reduce significantly the kinetics of the corrosion process of C38 carbon steel.
Keywords
Acknowledgements
The authors gratefully acknowledge the help and support of fellow scientists and colleagues involved in this work.
Funding: No funding was awarded to this study.
Conflict of Interest: No conflict of interest.
Citation
Belmaghraoui, W., Mazkour, A., Harhar, H., Harir, M. and El Hajjaji, S. (2019), "Investigation of corrosion inhibition of C38 steel in 5.5 M H3PO4 solution using
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited