Corrosion inhibition of Armco iron by 2-mercaptobenzimidazole in sodium chloride 3% media

被引：124

作者：

Amar, H.

Tounsi, A. ^{[1
]}

Makayssi, A.

Derja, A.

Benzakour, J.

Outzourhit, A.

机构：

[1] Fac Sci & Tech, Lab Environm Eletrochim & React Interfaces, Errachidia, Morocco

[2] Univ Cadi Ayyad, Fac Sci Semlalia, Lab Electrochim & Chim Analyt, Marrakech, Morocco

[3] Univ Cadi Ayyad, Fac Sci, Lab Phys Solide & Couches Minces, Marrakech, Morocco

来源：

CORROSION SCIENCE | 2007年 / 49卷 / 07期

关键词：

2-mercaptobenziiiiidazole; iron armco; EIS; weight loss; corrosion inhibitor;

D O I：

10.1016/j.corsci.2007.01.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of 2-mercaptobenzimidazole (2MBI) on the corrosion of Armco iron in NaCl media has been investigated in relation to the concentration of the inhibitor by various corrosion monitoring techniques. Surface morphology was studied by scanning electron microscopy (SEM). Results obtained revealed that 2MBI is a good anodic inhibitor. The addition of increasing concentrations of 2MBI moves the corrosion potential towards positive values and reduces the corrosion rate. EIS results show that the changes in the impedance parameters (R-l and C-dl) with concentrations of 2MBI is indicative of the adsorption of these molecules leading to the formation of a protective layer on iron surface. The adsorption of this compound is also found to obey Langmuir's adsorption isotherm in NaCl. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2936 / 2945

页数：10

共 27 条

[1] Piperidin-1-yl-phosphonic acid and (4-phosphono-piperazin-1-yl) phosphonic acid: A new class of iron corrosion inhibitors in sodium chloride 3% media [J].