Corrosion inhibition of carbon steel in hydrochloric acid solution by fruit peel aqueous extracts

被引：281

作者：

da Rocha, Janaina Cardozo ^{[1
]}

da Cunha Ponciano Gomes, Jose Antonio ^{[1
]}

D'Elia, Eliane ^{[2
]}

机构：

[1] Univ Fed Rio de Janeiro, COPPE, Lab Corrosao, Programa Engn Met & Mat,Ilha Fundao,Ctr Tecnol, BR-21941909 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Inst Quim, Dept Quim Inorgan, BR-21941909 Rio de Janeiro, Brazil

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 07期

关键词：

Steel; EIS; Polarization; Weight loss; SEM; Natural products; ANACARDIUM-OCCIDENTALE L; MILD-STEEL; SULFURIC-ACID; PLANT-EXTRACT; MEDIA; HCL; ALUMINUM;

D O I：

10.1016/j.corsci.2010.03.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inhibitive action of the aqueous extracts of fruit peels against corrosion of carbon steel in a 1 M HCI solution was investigated using electrochemical impedance spectroscopy, potentiodynamic polarization curves, weight loss measurements and surface analysis. We analyzed aqueous extracts of mango, orange, passion fruit and cashew peels in different concentrations and found that the extracts act as good corrosion inhibitors for the tested system. The inhibition efficiency increases with increasing extract concentration and decreases with temperature. The adsorption of components of the fruit peel extracts on the surface of the carbon steel follows the Langmuir adsorption isotherm. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2341 / 2348

页数：8

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