Corrosion inhibition of mild steel by two new S-heterocyclic compounds in 1 M HCl: Experimental and computational study

被引：367

作者：

Daoud, Djamel ^{[1
,2
]}

Douadi, Tahar ^{[1
]}

Hamani, Hanane ^{[1
]}

Chafaa, Salah ^{[1
]}

Al-Noaimi, Mousa ^{[3
]}

机构：

[1] Univ Ferhat ABBAS Setif 1, LEMMC, Dept Genie Proc, Fac Technol, Setif 19000, Algeria

[2] CDER, URAER, Ghardaia 47133, Algeria

[3] Hashemite Univ, Dept Chem, Zarqa 13115, Jordan

来源：

CORROSION SCIENCE | 2015年 / 94卷

关键词：

Mild steel; EIS; SEM; Weight loss; Acid corrosion; SCHIFF-BASE COMPOUNDS; CARBON-STEEL; THEORETICAL EVALUATION; CRYSTAL-STRUCTURE; ACID-SOLUTION; ADSORPTION; DERIVATIVES; COMPLEXES; ALUMINUM; PIPELINE;

D O I：

10.1016/j.corsci.2015.01.025

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The inhibition ability of a new S-heterocyclic Schiff base (SB) and the corresponding amine (DBTDA) towards mild steel corrosion in HC1 solution was studied at various concentrations and temperatures using weight loss, polarization curves, electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM) methods. The experimental results reveal that SB and DBTDA are efficient mixed type corrosion inhibitors, and their inhibition efficiencies increase with increasing concentration. The adsorption of these inhibitors on mild steel surface obeys Langmuir isotherm. Quantum chemical parameters are calculated using the Density Functional Theory method (DM. Correlation between theoretical and experimental results is discussed. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：21 / 37

页数：17

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