Effect of Harmal Extract on the Corrosion of C-steel in Hydrochloric Solution

被引：0

作者：

Bammou, L. ^{[1
]}

Belkhaouda, M. ^{[1
]}

Salghi, R. ^{[1
]}

Benali, O. ^{[2
]}

Zarrouk, A. ^{[3
]}

Al-Deyab, S. S. ^{[4
]}

Warad, I. ^{[4
]}

Zarrok, H. ^{[5
]}

Hammouti, B. ^{[3
,4
]}

机构：

[1] Univ Ibn Zohr, ENSA, Equipe Genie Environm & Biotechnol, Agadir, Morocco

[2] Saida Univ, Fac Sci & Technol, Dept Biol, Saida, Algeria

[3] Univ Mohammed Premier, Fac Sci, LCAE URAC18, Oujda, Morocco

[4] King Saud Univ, Coll Sci, Dept Chem, Riaydh 11451, Saudi Arabia

[5] Univ Ibn Tofail, Fac Sci, Lab Proc Separat, Kenitra, Morocco

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2014年 / 9卷 / 03期

关键词：

C-steel; EIS; polarization; SEM; Harmal extra; inhibition corrosion; COLD-ROLLED STEEL; AC-IMPEDANCE DATA; MILD-STEEL; CARBON-STEEL; C38; STEEL; THERMODYNAMIC CHARACTERIZATION; CHEMICAL-CHARACTERIZATION; EFFICIENT INHIBITOR; DERIVATIVES; ADSORPTION;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The extract of harmal (HE) in aqueous 1 M HCl was systematically investigated to ascertain its inhibitor y effect on corrosion of C-steel and its mechanism of the inhibition by electrochemical and weight loss methods. The inhibition efficiency of harmal extract (HE) on corrosion of C-steel in 1 M HCl solution ion increases on increasing in its concentration and decreases with rise in temperature. Potentiodynamic polarization measurement show that HE acts as cathodic type inhibitor. The increase in activation in energies of corrosion process in presence of the extract indicates that HE retarded the rate of corrosion of C-steel in 1 M HCl solution. The nature of adsorption of the extract on C-steel surface was in conformity with Langmuir isotherm. The results obtained with different method are in good agreement. Scanning electron microscopy (SEM) study confirmed that the inhibition of corrosion of C-steel is through adsorption of the extract molecules on surface of metal.

引用

页码：1506 / 1521

页数：16

共 60 条

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