期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 112, 期 1, 页码 234-238出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2008.05.036
关键词
metals; electrochemical techniques; adsorption; corrosion
资金
- Mersin University
N,N',-Methylenediacrylamide has been evaluated as a corrosion inhibitor for mild steel electrodes in 0.5 M HCl solution using potentiodynamic polarization, electrochemical impedance spectroscopy, and polarization resistance measurements. According to the experimental results, inhibition efficiency increased with increasing inhibitor concentration. Potentiodynamic measurements showed that the presence of inhibitor molecules decreases cathodic and anodic currents and shifts corrosion potential to a more positive potential region. Adsorption of the inhibitor molecules to the mild steel surface obeyed the Langmuir adsorption isotherm. Adsorption free energy was calculated from the adsorption isotherm as -26.8 kJ mol(-1). The negative value of Delta G(ads), showed that the adsorption process is spontaneous for the studied conditions. In addition, measurements were carried out at different solution temperatures to determine temperature dependence of the adsorption process. At all studied temperatures, the inhibitor molecule protected mild steel electrodes with the same effect. The effect of immersion time on corrosion of mild steel was also tested in this study. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据