Corrosion Inhibition Effect of N-lauroyl L-lysine on Mild Steel in 0.5 M H2SO4 Solution

The inhibitive effect of N-lauroyl L-lysine on the corrosion of mild steel in 0.5 M H2SO4 solution was investigated by electrochemical technique, weight loss measurement, scanning electron microscope (SEM) and quantum chemical calculation. The results showed that N-lauroyl L-lysine was a moderate ca...

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Bibliographic Details
Published inInternational journal of electrochemical science Vol. 15; no. 6; pp. 5585 - 5596
Main Authors Zeng, Xianguang, Zhu, Lin, Zheng, Xingwen
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2020
Subjects
adsorption
corrosion inhibitor
mild steel
N-lauroyl L-lysine
quantum chemical calculation
adsorption
corrosion inhibitor
N-lauroyl L-lysine
mild steel
quantum chemical calculation
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Summary:The inhibitive effect of N-lauroyl L-lysine on the corrosion of mild steel in 0.5 M H2SO4 solution was investigated by electrochemical technique, weight loss measurement, scanning electron microscope (SEM) and quantum chemical calculation. The results showed that N-lauroyl L-lysine was a moderate cathodic inhibitor for mild steel in 0.5 M H2SO4 solution with its inhibition efficiency increasing with concentration, and decreasing with temperature. The adsorption of N-lauroyl L-lysine on the surface of mild steel obeyed El-Awady thermodynamic-kinetic model, and the thermodynamic and kinetic parameters, as well as quantum chemical parameters, were determined to discuss the mechanism of inhibition of N-lauroyl L-lysine on mild steel surface.
ISSN:1452-3981
1452-3981
DOI:10.20964/2020.06.53