Inhibition effects of some Schiff's bases on the corrosion of mild steel in hydrochloric acid solution

被引：271

作者：

Prabhu, R. A. ^{[2
]}

Venkatesha, T. V. ^{[1
]}

Shanbhag, An. ^{[3
]}

Kulkarni, G. M. ^{[4
]}

Kalkhambikar, R. G. ^{[4
]}

机构：

[1] Kuvempu Univ, Dept PG Studies & Res Chem, Shankaraghatta 577451, Karnataka, India

[2] MGCArts Commerce & GHD Sci Coll, Dept Chem, Siddapur, Karnataka, India

[3] SDM Coll, Dept Chem, Honavar, Karnataka, India

[4] Karnataka Sci Coll, Dept Chem, Dharwad, Karnataka, India

来源：

CORROSION SCIENCE | 2008年 / 50卷 / 12期

关键词：

Mild steel; Organic coating; Polarization; SEM; Acid corrosion;

D O I：

10.1016/j.corsci.2008.09.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion inhibition effect of 4-{[(1Z)-(2-chloroquinolin-3-yl)methylene]amino} phenol (CAP), N-[(1 Z)-(2-chloroquinolin-yl)methylene]-N-(4-methoxyphenyl)amine (CMPA) and N-[(1E)-(2-chloroquinolin-3-yl)methylene]-N-(4-nitrophenyl)amine (CNPA) on mild steel in 1.0 M HCl has been investigated using mass loss, polarization and electrochemical impedance techniques at 300 K. The inhibition efficiencies increased with increase in inhibitors concentration. Polarization studies showed that the inhibitors are of predominantly cathodic character. Among the three compounds studied, CAP exhibited the best performance giving more than 97% IE. Some samples of mild steel were examined by SEM. All the inhibitors were found to adsorb on the mild steel surface according to the Langmuir adsorption isotherm. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3356 / 3362

页数：7

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