The corrosion inhibition of mild steel by 3-formyl-8-hydroxy quinoline in hydrochloric acid medium

被引：94

作者：

Achary, Ganesha ^{[1
]}

Sachin, H. R. ^{[1
]}

Naik, Y. Arthoba ^{[1
]}

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

机构：

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

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 107卷 / 01期

关键词：

acid medium; corrosion inhibition; quinoline; steel;

D O I：

10.1016/j.matchemphys.2007.06.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inhibition effects of 8-hydroxy quinoline (HQ) and 3-formyl 8-hydroxy quinoline (FQ) on corrosion of mild steel in hydrochloric acid was investigated. It was studied through weight loss, polarization and electrochemical impedance spectroscopic techniques. The results indicated that the corrosion inhibition efficiency and extent of surface coverage were increased with increase in inhibitor concentration and decreased with increase in temperature and acid concentration. The thermodynamic parameters were evaluated for corrosion inhibition process. The inhibitors follow Langmuir adsorption isotherm. The compound FQ showed more corrosion inhibition efficiency than HQ. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：44 / 50

页数：7

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