Adsorption and inhibitive properties of some new Mannich bases of Isatin derivatives on corrosion of mild steel in acidic media

被引：505
作者：
Ahamad, Ishtiaque [1 ]
Prasad, Rajendra [2 ]
Quraishi, M. A. [1 ]
机构：
[1] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India
[2] Banaras Hindu Univ, Fac Sci, Dept Chem, Varanasi 221005, Uttar Pradesh, India
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 04期
关键词：
Mild steel; EIS; Polarization; Weight loss; Acid corrosion; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SET MODEL CHEMISTRY; CARBON-STEEL; HYDROCHLORIC-ACID; MOLECULAR-STRUCTURE; TOTAL ENERGIES; WEIGHT-LOSS; IRON; MECHANISM; PHASE;
D O I：
10.1016/j.corsci.2010.01.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Adsorption of four derivatives of piperidinylmethylindoline-2-one on mild steel surface in 1 M HCl solution and its corrosion inhibition properties has been studied by a series of techniques, such as polarization, electrochemical impedance spectroscopy (EIS), weight loss and quantum chemical calculation methods. The values of activation energy (E-a) for mild steel corrosion and various thermodynamic parameters were calculated and discussed. Potentiodynamic polarization measurements showed that all inhibitors are mixed type. The degree of surface coverage was determined by using weight loss measurements and it was found that adsorption process of studied inhibitors on mild steel surface obeys Langmuir adsorption isotherm. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1472 / 1481
页数：10
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