Synergistic effect of halide ions on improving corrosion inhibition behaviour of benzisothiozole-3-piperizine hydrochloride on mild steel in 0.5 M H2SO4 medium

被引：128
作者：
Pavithra, M. K. [1 ]
Venkatesha, T. V. [1 ]
Vathsala, K. [1 ]
Nayana, K. O. [1 ]
机构：
[1] Kuvempu Univ, Sch Chem Sci, Dept Studies Chem, Shankaraghatta 577451, Karnataka, India
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 11期
关键词：
Mild steel; Acid solutions; Weight loss; Polarization; EIS; Acid inhibition; COLD-ROLLED STEEL; LOW-CARBON STEEL; SULFURIC-ACID; IODIDE-IONS; POTASSIUM-IODIDE; PART I; IRON; POLARIZATION; METHIONINE; ADSORPTION;
D O I：
10.1016/j.corsci.2010.07.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The synergistic effect of iodide ions and benzisothiozole-3-piperizine hydrochloride (BITP) on corrosion inhibition of mild steel in 0.5 M H2SO4 solution has been studied by both chemical and electrochemical methods. The corrosion performance of BITP in 1.0 M HCl and 0.5 M H2SO4 media was examined and compared. The adsorption of BITP and its combination with iodide ions on mild steel surface followed Langmuir adsorption isotherm via chemisorption mechanism. The calculated values of synergism parameter (S-theta) were found to be greater than unity. This result clearly showed the existence of synergism between iodide ions and BITP molecules. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3811 / 3819
页数：9
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