Inhibitive Action of Cannabis Plant Extract on the Corrosion of Copper in 0.5 M H2SO4

被引：0
|
作者：
Abd-El-Nabey, B. A. [1 ]
Abdel-Gaber, A. M. [1 ]
Ali, M. El Said [2 ]
Khamis, E. [1 ]
El-Housseiny, S. [1 ]
机构：
[1] Univ Alexandria, Dept Chem, Fac Sci, Alexandria 21321, Egypt
[2] Naif Arab Univ Secur Sci, Riyadh, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2013年 / 8卷 / 05期
关键词：
Copper corrosion; Canabis plant; EIS; Potentiodynamic polarization; sulphuric acid; STEEL; ADSORPTION;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effect of extract of cannabis plant on the corrosion of copper in aqueous 0.5M sulphuric acid was investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, weight loss and optical micrograph techniques. EIS and polarization measurements showed that the dissolution process of copper occurs under diffusion control. Potentiodynamic polarization curves indicated that the plant extract behaves as cathodic-type inhibitor. The corrosion rates of copper and the inhibition efficiencies of the extract were calculated. The results obtained show that the extract solution of the plant could serve as an effective inhibitor for the corrosion of copper in sulphuric acid media. Theoretical fitting of different isotherms, Langmuir, Flory-Huggins, and the kinetic-thermodynamic model, were tested to clarify the nature of adsorption.
引用
收藏
页码：7124 / 7137
页数：14
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