Inhibitive Effect of Cefuroxime on the Corrosion of Mild Steel in Hydrochloric Acid Solution

被引:0
作者
Singh, Ashish K. [1 ,2 ]
Quraishi, M. A. [2 ]
Ebenso, Eno E. [1 ]
机构
[1] North West Univ, Dept Chem, Sch Math & Phys Sci, ZA-2735 Mmabatho, South Africa
[2] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India
来源
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2011年 / 6卷 / 11期
关键词
Adsorption; Corrosion; EIS; Kinetic parameters; Mild steel; ADSORPTION; BEHAVIOR; ALLOYS; IRON;
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 corrosion inhibition properties of cefuroxime (CFM) for mild steel corrosion in HCl solution was investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and gravimetric methods. Mixed mode of adsorption (physisorption and chemisorption) is proposed for the inhibition and the process followed the Langmuir adsorption isotherm. The mechanism of adsorption inhibition and type of adsorption isotherm were proposed from the trend of inhibition efficiency with temperature, E-a and Delta G(ads)(o). Potentiodynamic polarization study clearly revealed that CFM acted as mixed type inhibitor but predominantly cathodic. The experimental data showed a frequency distribution and therefore a modelling element with frequency dispersion behaviour and a constant phase element (CPE) have been used.
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收藏
页码:5676 / 5688
页数:13
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