Advanced
search

To read this content please select one of the options below:

The corrosion inhibition of carbon steel in 5 per cent HCl by Momordica charantia extract

Xie Xuejun* (Department of Water Quality Engineering, School of Power and Mechanical Engineering, Wuhan University, Wuhan, People's Republic of China)
Xiao Peng* (Department of Water Quality Engineering, School of Power and Mechanical Engineering, Wuhan University, Wuhan, People's Republic of China and Shenzhen Energy Binhai Power Plant Preparatory Agency, Shenzhen, People's Republic of China)
He Jie (Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, People's Republic of China)
Xiao Wen (Department of Water Quality Engineering, School of Power and Mechanical Engineering, Wuhan University, Wuhan, People's Republic of China and Shenzhen Energy Binhai Power Plant Preparatory Agency, Shenzhen, People's Republic of China)
Fu Qiang (Guangdong Power Grid Electric Power Science & Research Institute, Guangzhou, People's Republic of China)
Zou Pinguo (Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group, Wuhan, People's Republic of China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 27 May 2014

160

Abstract

Purpose

To study the inhibition effect and mechanism of the Momordica charantia extract (BM) to 20 A carbon steel in 5 per cent HCl.

Design/methodology/approach

The weight loss, polarization curve, infrared spectrum (IR) analysis and X-ray photoelectron spectrum (XPS) analysis were carefully investigated to indicate the inhibition effect and mechanism of the BM to 20 A carbon steel in 5 per cent HCl.

Findings

BM was composed of C, N and O. Functional groups such as N–H and C=O were found in BM. The inhibition efficiency increased with the increasing concentration of BM. BM behaved as a mixed-type inhibitor, and the inhibition of BM to 20 A carbon steel might be its adsorption through the coordinate covalent bonding among the lone pair electrons of N and O and the empty 3d orbits of Fe, and the adsorption on the surface of 20 A carbon steel obeyed the Langmuir isotherm equation.

Research limitations/implications

The inhibition of the BM to 20 A carbon steel in 5 per cent HCl.

Practical implications

BM could be used in 5 per cent HCl to prevent 20 A carbon steel from corrosion.

Social implications

BM could be used in the chemical cleaning of the boilers to prevent the thermal equipments from corrosion.

Originality/value

The inhibition effect and mechanism of the BM to 20 A carbon steel were studied by the weight loss, polarization curve, IR analysis and XPS analysis. BM was composed of C, N and O. Functional groups such as N–H and C=O were found in BM. BM behaved as a mixed-type inhibitor. The inhibition efficiency increased with the increasing concentration of BM, and the adsorption on the surface of 20 A carbon steel obeyed the Langmuir isotherm equation.

Keywords

Acknowledgements

*These authors contributed equally to the work

Citation

Xuejun*, X., Peng*, X., Jie, H., Wen, X., Qiang, F. and Pinguo, Z. (2014), "The corrosion inhibition of carbon steel in 5 per cent HCl by Momordica charantia extract", Anti-Corrosion Methods and Materials, Vol. 61 No. 4, pp. 255-260. https://doi.org/10.1108/ACMM-03-2013-1247

Publisher

:

Emerald Group Publishing Limited

Copyright © 2014, Emerald Group Publishing Limited

Related articles

Manage cookies

We’re listening — tell us what you think

Join us on our journey