The effects of pharmaceutically active compound doxycycline on the corrosion of mild steel in hydrochloric acid solution

被引：126

作者：

Shukla, Sudhish Kumar ^{[1
]}

Quraishi, M. A. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 02期

关键词：

Mild steel; Acid solutions; Weight loss; AFM; Acid inhibition; SULFURIC-ACID; CARBON-STEEL; IRON CORROSION; H2SO4; SOLUTION; HCL SOLUTION; HALIDE-IONS; INHIBITION; MEDIA; ALUMINUM; BEHAVIOR;

D O I：

10.1016/j.corsci.2009.09.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion inhibition of mild steel in hydrochloric acid solution by doxycycline has been studied by weight loss measurements, polarization resistance, Tafel polarization and electrochemical impedance spectroscopy. The inhibitor showed more than 95% inhibition efficiency at optimum concentration 9.02 x 10(-4) M. Potentiodynamic polarization suggests that it is a mixed type of inhibitor. Electrochemical impedance spectroscopy was used to investigate the mechanism of corrosion inhibition. Thermodynamic parameters were calculated to investigate mechanism of inhibition. The compound follows Langmuir adsorption isotherm. AFM studies of mild steel surface with and without inhibitor were performed and calculated roughness also supported the inhibition data. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：314 / 321

页数：8

共 59 条

[1] Corrosion inhibition of aluminum by 1,1(lauryl amido)propyl ammonium chloride in HCl solution [J].