Green approach to corrosion inhibition of 304 stainless steel in hydrochloric acid solution by the extract of Salvia officinalis leaves

被引：227
作者：
Soltani, Nasrin [1 ]
Tavakkoli, Nahid [1 ]
Khayatkashani, Maryam [2 ]
Jalali, Mohammad Reza [3 ]
Mosavizade, Ahmad [1 ]
机构：
[1] Payame Noor Univ, Dept Chem, Tehran, Iran
[2] Univ Kashan, Fac Chem, Dept Analyt Chem, Kashan, Iran
[3] Payame Noor Univ, Dept Phys, Tehran, Iran
来源：
CORROSION SCIENCE | 2012年 / 62卷
关键词：
Stainless steel; EIS; Polarization; Acid inhibition; Kinetic parameters; MILD-STEEL CORROSION; COLD-ROLLED STEEL; STAINLESS-STEEL; SULFURIC-ACID; ADSORPTION; HCL; DERIVATIVES; EXUDATE; MEDIA; BASES;
D O I：
10.1016/j.corsci.2012.05.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The extract of Salvia officinalis (S. officinalis) leaves has been evaluated as a corrosion inhibitor for 304 stainless steel in 1 M HCl solution by means of weight loss measurements, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS). Tafel polarization study revealed that extract of S. officinails acts as a mixed type inhibitor. Adsorption of the inhibitor on the steel surface followed Langmuir adsorption isotherm. Quantum chemical calculations using the density functional theory (DFT) and semi-empirical method (AM1) were performed to illustrate the process of adsorption of some specific components of the extract. (C) 2012 Published by Elsevier Ltd.
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收藏
页码：122 / 135
页数：14
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