Ceftriaxone: a novel corrosion inhibitor for mild steel in hydrochloric acid

被引：0
作者：
Sudhish Kumar Shukla
M. A. Quraishi
机构：
[1] Banaras Hindu University,Department of Applied Chemistry, Institute of Technology
来源：
Journal of Applied Electrochemistry | 2009年 / 39卷
关键词：
Mild steel; Corrosion inhibition; Weight loss; EIS; Drug;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Corrosion inhibition of mild steel in 1 N HCl by Ceftriaxone was studied by polarization resistance, Tafel polarization, EIS, and weight loss measurement. The inhibitor showed more than 90% inhibition efficiency at optimum concentration of 400 ppm. Results obtained revealed that inhibition occurs through adsorption of the drug on the metal surface without a modification of the mechanism of the corrosion process. Potentiodynamic polarization suggests that this is a mixed type of inhibitor. Electrochemical impedance spectroscopy was used to investigate the mechanism of corrosion inhibition. Thermodynamic parameters such as Ea, ΔH, ΔS, ΔG and Q were calculated to investigate the mechanism of inhibition. All the investigations suggested that the compound follows the Langmuir adsorption isotherm.
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页码：1517 / 1523
页数：6
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