Inhibition effect of 2-amino-4-methylpyridine on mild steel corrosion: Experimental and theoretical investigation

被引：133
作者：
Mert, Basak Dogru [1 ]
Yuce, Ayse Ongun [1 ]
Kardas, Gulfeza [1 ]
Yazici, Birgul [1 ]
机构：
[1] Cukurova Univ, Sci & Letters Fac, Dept Chem, TR-01330 Adana, Turkey
来源：
CORROSION SCIENCE | 2014年 / 85卷
关键词：
Mild steel; Electrochemical calculation; SEM; Modeling studies; Acid corrosion; HYDROCHLORIC-ACID SOLUTION; CARBON-STEEL; 1ST-ORDER HYPERPOLARIZABILITY; NBO ANALYSIS; PART I; SCHIFF-BASE; FT-RAMAN; M H2SO4; HCL; ADSORPTION;
D O I：
10.1016/j.corsci.2014.04.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of 2-amino-4-methylpyridine (AMP) on the corrosion behavior of mild steel (MS) in 0.5 M HCl is investigated with electrochemical methods and theoretical calculations. The electrochemical tests show that the polarization resistance of MS increasing the presence of AMP in acid solution. Adsorption of AMP on MS surface is a physical and obeys the Langmuir isotherm. The quantum parameters signaled adsorption occurs on amine and methyl substituents of AMP. The inhibition efficiency is related to frontier orbital's energy band gap of AMP, which are 5.357 and 6.490 eV for neutral and protonated molecules in aqueous solution, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：287 / 295
页数：9
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