文章基本信息

标题：Avogado Nuts Extract (ANE) : An efficient Inhibitor of C38 Steel Corrosion in Hydrochloric Acid,
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作者：Belkhaouda M. ; Bammou L. ; Salghi R. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2013
卷号：4
期号：6
页码：1042-1051
出版社：University of Mohammed Premier Oujda
摘要：The inhibitive action of Avogado Nuts Extract (ANE) on C38 steel in 1M HCl solution was studied using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The extracts were found to inhibit the corrosion of C38 steel in 1M HCl. The inhibition efficiency increased with the extracts concentration. Polarization curves reveal that ANE is a mixed type inhibitor with predominant cathodic effectiveness. Changes in impedance parameters (charge transfer resistance, Rt, and double-layer capacitance, Cdl) were indicative of adsorption of ANE on the metal surface, leading to the formation of a protective film. The effect of the temperature on the corrosion behaviour with addition of the optimal concentration of ANE was studied in the temperature range 298 – 328 K. The inhibition efficiency of the plant extract remain slightly constant with increasing temperature. Adsorption of ANE on the C38 steel surface is found to obey the Langmuir adsorption isotherm. Some thermodynamic functions of dissolution process were also determined
关键词：Avogado Nuts Extract; corrosion; inhibition; C38 steel; adsorption.