Experimental and theoretical studies for mild steel corrosion inhibition in 1 M HCl by two new benzothiazine derivatives

被引：123
|
作者：
Ghailane, T. [1 ]
Balkhmima, R. A. [2 ]
Ghailane, R. [1 ]
Souizi, A. [1 ]
Touir, R. [2 ]
Ebn Touhami, M. [2 ]
Marakchi, K. [3 ]
Komiha, N. [3 ]
机构：
[1] Univ Ibn Tofail, Lab Synth Organ Organotnetall & Theor, Fac Sci, Kenitra, Morocco
[2] Univ Ibn Tofail, Lab Mat Electrochim & Environm, Fac Sci, Kenitra, Morocco
[3] Univ Mohamed VAgdal, Equipe Chim Theor & Modelisat LS3ME, Fac Sci, Rabat, Morocco
来源：
CORROSION SCIENCE | 2013年 / 76卷
关键词：
Acid solutions; Mild steel; EIS; Polarization; Acid corrosion; Acid inhibition; MOLECULAR-STRUCTURE; ACID CORROSION; PARAMETERS; EFFICIENCY; BEHAVIOR; IRON;
D O I：
10.1016/j.corsci.2013.06.052
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inhibition effect of new heterocyclic compounds, namely 2-aryl-benzothiazin-3-one (P1) and 3-aryl-benzothiazin-2-one (P2) on mild steel corrosion in 1 M HCl was investigated using electrochemical measurements. The results indicated that the inhibition efficiency depends on concentration and molecular structure of the investigated compounds. It is also found that the inhibition of P1 is greater than P2. The molecular structure effect on the corrosion inhibition efficiency was investigated using DFT calculations. The structural and electronic parameters were calculated and discussed. The obtained results show that the experimental and theoretical studies agree well and confirm that P1 is the better inhibitor. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：317 / 324
页数：8
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