Cysteine as Inhibitor on the Corrosion of Mild Steel in Sulphuric Acid and Hydrochloric Acid Solutions
Corresponding Author(s) : Hui Cang
canghui@ycit.edu.cn
Asian Journal of Chemistry,
Vol. 24 No. 8 (2012): Vol 24 Issue 8
Abstract
The corrosion inhibition of mild steel in 0.5 M H2SO4 and 1 M HCl by L-cysteine (Cys) has been studied using potentiodynamic polarization measurements. Inhibition efficiency was found to increase with increasing concentration of L-cysteine in both acids and the higher inhibition efficiency is obtained in 1 M HCl. The activation energy as well as other electrochemical parameters for the inhibition process was calculated. The results suggest that the L-cysteine could serve as an effective inhibition of the corrosion of mild steel in hydrochloric acid and sulphuric acid.
Keywords
Cysteine
Mild steel
Polarization
Interface
Acid inhibition
Cang, H., Shi, W., Lu, Y., Shao, J., & Xu, Q. (2012). Cysteine as Inhibitor on the Corrosion of Mild Steel in Sulphuric Acid and Hydrochloric Acid Solutions. Asian Journal of Chemistry, 24(8), 3675–3678. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/9420
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