Inhibitive action of some plant extracts on the corrosion of steel in acidic media

被引：389

作者：

Abdel-Gaber, A. M. ^{[1
]}

Abd-El-Nabey, B. A. ^{[1
]}

Sidahmed, I. M. ^{[1
]}

El-Zayady, A. M. ^{[1
]}

Saadawy, M. ^{[1
]}

机构：

[1] Univ Alexandria, Dept Chem, Fac Sci, Alexandria 21321, Egypt

来源：

CORROSION SCIENCE | 2006年 / 48卷 / 09期

关键词：

corrosion; steel; plant extracts; critical concentration;

D O I：

10.1016/j.corsci.2005.09.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of extracts of Chamomile (Chamaemelum mixtum L.), Halfabar (Cymbopogon proximus), Black cumin (Nigella sativa L.), and Kidney bean (Phaseolus vulgaris L.) plants on the corrosion of steel in aqueous I M sulphuric acid were investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. EIS measurements showed that the dissolution process of steel occurs under activation control. Potentiodynamic polarization curves indicated that the plant extracts behave as mixed-type inhibitors. The corrosion rates of steel and the inhibition efficiencies of the extracts were calculated. The results obtained show that the extract solution of the plant could serve as an effective inhibitor for the corrosion of steel in sulphuric acid media. Inhibition was found to increase with increasing concentration of the plant extract up to a critical concentration. The inhibitive actions of plant extracts are discussed on the basis of adsorption of stable complex at the steel surface. Theoretical fitting of different isotherms, Langmuir, Flory-Huggins, and the kinetic thermodynamic model, were tested to clarify the nature of adsorption. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2765 / 2779

页数：15

共 45 条

[1] Application of the kinetic-thermodynamic model for inhibition of acid corrosion of steel by inhibitors containing sulfur and nitrogen [J].

AbdElNabey, BA ;

Khamis, E ;

Ramadan, MS ;

ElGindy, A .

CORROSION, 1996, 52 (09) :671-679

[2]

Adams M. W., 1980, Handbook of energy utilization in agriculture., P123

[3]

Al-Hader Abdelfattah, 1993, International Journal of Pharmacognosy, V31, P96

[4]

[Anonymous], 2000, CORROSION METAL ENV

[5] THE SYNERGISTIC EFFECT OF ANIONS AND THE AMMONIUM CATION ON THE INHIBITION OF IRON CORROSION IN ACID-SOLUTION [J].

ARAMAKI, K ;

HAGIWARA, M ;

NISHIHARA, H .

CORROSION SCIENCE, 1987, 27 (05) :487-497

[6] Inhibitive action of Vernonia amygdalina on the corrosion of aluminium alloys in acidic media [J].

Avwiri, GO ;

Igho, FO .

MATERIALS LETTERS, 2003, 57 (22-23) :3705-3711

[7]

BARANNIK VP, 1945, UCH ZAP MOSK GOSUD U

[8] Identification of secondary metabolites in medicinal and spice plants by NIR-FT-Raman microspectroscopic mapping [J].

Baranska, M ;

Schulz, H ;

Rösch, P ;

Strehle, MA ;

Popp, J .

ANALYST, 2004, 129 (10) :926-930

[9] Dietary fiber intake and reduced risk of coronary heart disease in US men and women - The National Health and Nutrition Examination Survey I Epidemiologic Follow-up Study [J].

Bazzano, LA ;

He, J ;

Ogden, LG ;

Loria, CM ;

Whelton, PK .

ARCHIVES OF INTERNAL MEDICINE, 2003, 163 (16) :1897-1904

[10] Anthocyanin profile of Korean cultivated kidney bean (Phaseolus vulgaris L.) [J].

Choung, MG ;

Choi, BR ;

An, YN ;

Chu, YH ;

Cho, YS .

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2003, 51 (24) :7040-7043

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