Theoretical and electrochemical assessment of inhibitive behavior of some thiophenol derivatives on mild steel in HCl

被引：89

作者：

Kosari, A. ^{[1
]}

Momeni, M. ^{[1
]}

Parvizi, R. ^{[1
]}

Zakeri, M. ^{[1
]}

Moayed, M. H. ^{[1
]}

Davoodi, A. ^{[2
]}

Eshghi, H. ^{[3
]}

机构：

[1] Ferdowsi Univ Mashhad, Dept Mat & Met Engn, Fac Engn, Mashhad 917751111, Iran

[2] Sabzevar Tarbiat Moallem Univ, Dept Mat Engn, Sabzevar 391, Iran

[3] Ferdowsi Univ Mashhad, Dept Chem, Fac Sci, Mashhad 917751111, Iran

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 10期

关键词：

Mild steel; EIS; Polarization; Acid inhibition; SCHIFF-BASE COMPOUNDS; CORROSION-INHIBITORS; ADSORPTION PROCESSES; ACIDIC MEDIA; IRON; CAPACITANCE; SYSTEMS; RATES;

D O I：

10.1016/j.corsci.2011.05.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inhibitive performance of some synthesized thiophenol derivatives on corrosion behavior of mild steel in 0.1 M HCl solution was investigated by means of electrochemical techniques, quantum chemical and optical microscopy. The increase in concentration and immersion time shows a positive effect on inhibition efficiency while temperature has a negative effect. Inhibitor molecules directly adsorb at surface on the basis of donor-acceptor interactions between the it-electrons of benzene, sulfur and nitrogen atoms and the vacant d-orbitals of iron atoms. According to the thermodynamic parameters, present inhibitors adsorb physically. Optical microscopy examinations demonstrate a decrease in corrosion attacks in presence of inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3058 / 3067

页数：10

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