Corrosion inhibition potentiality of some benzimidazole derivatives for mild steel in hydrochloric acid: Electrochemical and weight loss studies

被引：12
|
作者：
Lgaz, H. [1 ,2 ]
Salghi, R. [2 ]
Jodeh, S. [3 ]
机构：
[1] Univ Ibn Tofail, Lab Separat Proc, Fac Sci, POB 242, Kenitra, Morocco
[2] Ibn Zohr Univ, ENSA, Lab Appl Chem & Environm, POB 1136, Agadir, Morocco
[3] An Najah Natl Univ, Dept Chem, POB 7, Nablus, Palestine
来源：
INTERNATIONAL JOURNAL OF CORROSION AND SCALE INHIBITION | 2016年 / 5卷 / 04期
关键词：
corrosion inhibition; mild steel; EIS; weight loss; benzimidazole derivatives;
D O I：
10.17675/2305-6894-2016-5-4-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The adsorption and inhibition effects of three benzimidazole derivatives (BDD), namely: 2-(2-pyridyl) benzimidazole (PBD), 2-bromo-1H-benzimidazole (BrBD), and 2-chloro-benzimidazole (ClBD) on mild steel corrosion in 1 M HCl have been studied by electro-chemical and weight loss methods. Results showed that inhibition efficiency increases with concentration and maximum value was obtained at 5.10(-3) M concentration. From the results, it is concluded that the BDD inhibited mild steel corrosion in 1 M HCl by adsorbing on the metal surface. Polarization results showed that the BDD act as mixed type inhibitors. The adsorption of BDD onto the mild steel surface was described by the Langmuir adsorption isotherm.
引用
收藏
页码：347 / 359
页数：13
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