Electrochemical and quantum chemical studies of some azomethine compounds as corrosion inhibitors for mild steel in 1 M hydrochloric acid

被引：154

作者：

Hamani, Hanane ^{[1
]}

Douadi, Tahar ^{[1
]}

Al-Noaimi, Mousa ^{[2
]}

Issaadi, Saifi ^{[1
]}

Daoud, Djamel ^{[1
,3
]}

Chafaa, Salah ^{[1
]}

机构：

[1] Ferhat Abbas Univ Setif 1, Fac Technol, Dept Engn Proc, Lab Elect Mol Mat & Complexes, DZ-19000 Setif, Algeria

[2] Hashemite Univ, Dept Chem, Zarqa 13115, Jordan

[3] CDER, Dev Ctr Renewable Energies, URAER, Appl Res Unit Renewable Energies, Ghardaia, Algeria

来源：

CORROSION SCIENCE | 2014年 / 88卷

关键词：

Acid solutions; Mild steel; EIS; Polarization; Acid corrosion; SCHIFF-BASE COMPOUNDS; CARBON-STEEL; M HCL; ADSORPTION; ALUMINUM; DERIVATIVES; MEDIA; BEHAVIOR; EXTRACT; SURFACE;

D O I：

10.1016/j.corsci.2014.07.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion inhibition effect of new azomethine compounds: PhN=N-C (COCH3)=NC6H4Y {Y = OCH3 (SB1), CH3 (SB2), H (SB3), Br (SB4) and Y = Cl (SB5)} on mild steel in 1 M HCl, was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and quantum chemistry analysis. It has been found that the inhibition efficiency increased with increasing inhibitor concentration. The polarization curves showed that these Schiff bases function as mixed inhibitors. The adsorption of studied compounds on mild steel surface was found to follow the Langmuir isotherm. Molecular modeling was used to correlate corrosion inhibition properties and calculated quantum chemical parameters. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：234 / 245

页数：12

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