摘要
局部电化学阻抗(LEIS)方法是研究局部腐蚀过程的最新方法之一,它可以向被测电极施加微扰电压,从而感生出交变电流,通过确定金属表面上局部溶液交流电流密度来测量局部阻抗。本文介绍了该技术的发展历史、测量原理,并重点讨论了该技术在腐蚀研究中的应用,最后概括了该技术的特点。
Local electrochemical impedance spectroscopy （LEIS） technique is a novel method for the study of local corrosion, which is based on the assumption that the local impedance can be gen- erated by measuring the AC-local-current density in the vicinity of the working electrode in a usual three-electrode cell configuration. From a practical point of view, this was achieved with the use of a dual microelectrode for sensing the local AC-potential gradient, the local current being obtained from the direct application of the Ohm＇s law. In this paper, the history and principles of this tech- nique were reviewed, while the applications in the field of corrosion research and the characteris- tics of this method were also discussed.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2015年第4期287-296,共10页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金重点项目(51131005)资助
关键词
局部电化学阻抗技术
腐蚀
应用
local electrochemical impedance （LEIS）； corrosion； application
