文章基本信息

标题：Electrochemical study on the effectively of Hyoscyamus Muticus Extract as a green inhibitor for corrosion of copper in 1 M HNO3
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作者：Fouda A.S. ; Abdallah Y.M. ; Elawady G.Y. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：6
页码：1519-1531
出版社：University of Mohammed Premier Oujda
摘要：Hyoscyamus Muticus Extract (HME), was investigated as a green corrosion inhibitor for copper in 1 M HNO 3 solution using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Surface morphology was tested using scanning electron microscope (SEM). The effect of the temperature on corrosion behavior with addition of different concentrations was studied in the temperature range of 25-45 oC by weight loss. Polarization curves reveal that the investigated extract is a cathodic behavior. The inhibition efficiency was found to increase with increase in the investigated extract concentration and decrease with increase in solution temperature. The ad sorption of the inhibitor on copper surface was found to obey the Langmuir's adsorption isotherm. The activation and adsorption parameters were calculated and discussed. The results obtained from chemical and electrochemical techniques are in good agreement
关键词：Acidic inhibition; Copper; Hyoscyamus Muticus Extract; Green inhibitor; SEM.