Corrosion inhibition of C38 steel by alkaloids extract of Geissospermum laeve in 1 M hydrochloric acid: Electrochemical and phytochemical studies

被引：238

作者：

Faustin, M. ^{[1
]}

Maciuk, A. ^{[2
]}

Salvin, P. ^{[1
]}

Roos, C. ^{[1
]}

Lebrini, M. ^{[1
]}

机构：

[1] UAG, UMR ECOFOG, Lab Mat & Mol Milieux Amazonien, Cayenne 97337, French Guiana

[2] Univ Paris 11, BioCIS, Lab Pharmacognosie Chim Subst Nat & Chimiotherapi, Chatenay Malabry, France

来源：

CORROSION SCIENCE | 2015年 / 92卷

关键词：

C38; steel; EIS; SEM; Acid corrosion; Cathodic protection; Anodic protection; SOL-GEL COATINGS; MILD-STEEL; PLANT-EXTRACT; IMPEDANCE SPECTROSCOPY; PASSIVE FILM; CARBON-STEEL; HCL; PROTECTION; IRON; DERIVATIVES;

D O I：

10.1016/j.corsci.2014.12.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion inhibition by alkaloids extract (AE) from Geissospermum laeve on C38 steel in 1 M HCl is investigated with electrochemical studies. Inhibition efficiency of 92% is reached with 100 mg/L of AE at 25 degrees C. Potentiodynamic polarization showed that the extract behaves as mixed-type inhibitors. The Nyquist plots showed that increasing AE concentration, charge-transfer resistance increased and double-layer capacitance decreased, involving increased inhibition efficiency. Adsorption of the inhibitor molecules corresponds to Langmuir adsorption isotherm. Immersion time and temperature effects were investigated using EIS and potentiodynamic polarization. SEM and EDX supported the adsorption conclusions. The active compound responsible for the corrosion inhibition is geissospermine. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：287 / 300

页数：14

共 74 条

[1] Inhibitive action of some plant extracts on the corrosion of steel in acidic media [J].

Abdel-Gaber, A. M. ;

Abd-El-Nabey, B. A. ;

Sidahmed, I. M. ;

El-Zayady, A. M. ;

Saadawy, M. .

CORROSION SCIENCE, 2006, 48 (09) :2765-2779

[2] The role of acid anion on the inhibition of the acidic corrosion of steel by lupine extract [J].

Abdel-Gaber, A. M. ;

Abd-El-Nabey, B. A. ;

Saadawy, M. .

CORROSION SCIENCE, 2009, 51 (05) :1038-1042

[3] The effects of Aloe vera extract on corrosion and kinetics of corrosion process of zinc in HCl solution [J].

Abiola, Olusegun K. ;

James, A. O. .

CORROSION SCIENCE, 2010, 52 (02) :661-664

[4]

[Anonymous], WERKST KORROS

[5] Schiff's base of pyridyl substituted triazoles as new and effective corrosion inhibitors for mild steel in hydrochloric acid solution [J].

Ansari, K. R. ;

Quraishi, M. A. ;

Singh, Ambrish .

CORROSION SCIENCE, 2014, 79 :5-15

[6] EN, EIS and polarization studies to evaluate the inhibition effect of 3H-phenothiazin-3-one, 7-dimethylamin on mild steel corrosion in 1 M HCl solution [J].

Ashassi-Sorkhabi, H. ;

Seifzadeh, D. ;

Hosseini, M. G. .

CORROSION SCIENCE, 2008, 50 (12) :3363-3370

[7]

AUROUSSEAU M, 1961, ANN PHARM FR, V19, P175

[8]

Bammou L, 2014, INT J ELECTROCHEM SC, V9, P1506

[9]

Beljanski M., 1994, PCT INT APPL, V33, P33

[10] Thermodynamic characterization of metal dissolution and inhibitor adsorption processes in mild steel/2,5-bis(n-thienyl)-1,3,4-thiadiazoles/hydrochloric acid system [J].

Bentiss, F ;

Lebrini, M ;

Lagrenée, M .

CORROSION SCIENCE, 2005, 47 (12) :2915-2931

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