Pyridine derivatives as corrosion inhibitors for N80 steel in 15% HCl: Electrochemical, surface and quantum chemical studies

被引：163

作者：

Ansari, K. R. ^{[1
]}

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

Singh, Ambrish ^{[2
]}

机构：

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

[2] Lovely Profess Univ, Lovely Fac Technol & Sci, Dept Chem, Phagwara, India

来源：

MEASUREMENT | 2015年 / 76卷

关键词：

N80; steel; EIS; SECM; Acid corrosion; COLD-ROLLED STEEL; MILD-STEEL; MOLECULAR-STRUCTURE; CARBON-STEEL; COMPUTATIONAL SIMULATION; PYRIMIDINE-DERIVATIVES; ORGANIC-COMPOUNDS; ACID-SOLUTION; ADSORPTION; TRIAZOLES;

D O I：

10.1016/j.measurement.2015.08.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present paper deals with the adsorption and inhibitory effects of the pyridine derivatives, namely 2-amino-6-(2,4-dihydroxyphenyl)-4-(4-methoxyphenyl) nicotinonitrile (ADP) and 2-amino-4-(4-methoxyphenyl)-6-phenylnicotinonitrile (AMP) on N80 steel corrosion in 15% HCl. Among the studied compounds, ADP showed the inhibition efficiency of 90.24% at 200 mg/L. The corrosion study was performed by gravimetric, electrochemical impedance spectroscopy (EIS), Tafel polarization, scanning electron microscopy (SEM), scanning electrochemical microscopy (SECM) and energy-dispersive X-ray spectroscopy (EDX) techniques. The Langmuir isotherm model showed the best fit. The quantum chemical study was used to support the experimental results. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：136 / 147

页数：12

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