Experimental and theoretical study of corrosion inhibition of 3-pyridinecarbozalde thiosemicarbazone for mild steel in hydrochloric acid

被引：161

作者：

Xu, Bin ^{[1
]}

Liu, Ying ^{[1
]}

Yin, Xiaoshuang ^{[1
]}

Yang, Wenzhong ^{[1
]}

Chen, Yizhong ^{[2
]}

机构：

[1] Nanjing Univ Technol, Sch Sci, Nanjing 210009, Jiangsu, Peoples R China

[2] Jiangsu Polytech Univ, Sch Environm & Safety Engn, Changzhou 213164, Peoples R China

来源：

CORROSION SCIENCE | 2013年 / 74卷

关键词：

Mild steel; Weight loss; EIS; Acid corrosion; CARBON-STEEL; SCHIFF-BASES; ADSORPTION BEHAVIOR; MOLECULAR-DYNAMICS; DERIVATIVES; PERFORMANCE; IRON;

D O I：

10.1016/j.corsci.2013.04.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion inhibition effect of 3-pyridinecarboxaldehyde thiosemicarbazone (3-PCT) on mild steel was studied in 1 M HCl solution by means of weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The surface morphology of mild steel was examined with scanning electron microscopy (SEM) and the mechanism of inhibition was determined by the potential of zero charge (PZC) measurement at the metal-solution interface. Then molecular dynamics simulations were also executed for 3-PCT. The results show that 3-PCT is a good corrosion inhibitor, retarding both cathodic and anodic reactions in hydrochloric acid. The adsorption of 3-PCT on the mild steel surface obeys the Langmuir isotherm, and the thermodynamic parameters (K-ads,Ea, Delta G(ads)(0)) were also determined and discussed. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：206 / 213

页数：8

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