物理化学学报Issue(7)：1345-1350,6.DOI:10.3866/PKU.WHXB201504271
用三电极体系研究铜在微液滴下的电化学腐蚀
Investigation of the Electrochemical Corrosion of Copper under a Micrometric Electrolyte Droplet Using a Three-Electrode System
摘要
Abstract
Owing to its high impedance, studying atmospheric corrosion using a traditional reference electrode (RE) is difficult. To obtain more accurate information on the electrochemical processes involved in atmospheric corrosion, it is necessary to improve the traditional RE. In this paper, the corrosion behavior of copper under an electrolyte droplet containing (NH4)2SO4 was investigated by electrochemical impedance spectroscopy (EIS) and polarization measurements using a three-electrode system with a modified RE. The average corrosion rate increased with decreasing electrolyte volumes (from 1 to 20μL) and with decreasing heights of the droplet at heights below 850μm. The EIS and polarization results were in agreement, thereby demonstrating that the modified RE could be effectively used to study atmospheric corrosion under an electrolyte droplet.关键词
大气腐蚀/铜/电化学阻抗谱/液滴/极化曲线/微电极Key words
Atmospheric corrosion/Copper/Electrochemical impedance spectroscopy/Droplet/Polarization curve/Microelectrode分类
化学化工引用本文复制引用
程庆利,张卫华,陶彬..用三电极体系研究铜在微液滴下的电化学腐蚀[J].物理化学学报,2015,(7):1345-1350,6.基金项目
The project was supported by the Qingdao People's Livelihood Science and Technology Project, China (11-2-3-56-nsh).青岛市民生计划项目(11-2-3-56-nsh)资助 （11-2-3-56-nsh）
