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Improved potentiometric SECM imaging of galvanic corrosion reactions
Corrosion Science ( IF 8.3 ) Pub Date : 2017-12-01 , DOI: 10.1016/j.corsci.2017.10.006
D. Filotás , B.M. Fernández-Pérez , J. Izquierdo , A. Kiss , L. Nagy , G. Nagy , R.M. Souto

Abstract The galvanic corrosion of Zn-Cu systems has been monitored in situ using scanning electrochemical microscopy in the potentiometric mode. Here, the initial studies performed using double-barrel microelectrodes for the simultaneous detection of local pH and Zn ion concentration changes in single lines scans, have been extended to the obtention of 2-D maps of Cu 2+ and Zn 2+ ions. The construction and calibration of a novel Cu 2+ ion selective microelectrode is reported. New scanning algorithms and data evaluation tools have been explored for faster acquisition rates than those limited by the time constants associated to potentiometric response.

中文翻译:

改进电偶腐蚀反应的电位 SECM 成像

摘要 使用扫描电化学显微镜在电位模式下原位监测了 Zn-Cu 系统的电偶腐蚀。在这里,使用双筒微电极同时检测单线扫描中局部 pH 和 Zn 离子浓度变化的初步研究已经扩展到获得 Cu 2+ 和 Zn 2+ 离子的二维图。报道了一种新型 Cu 2+ 离子选择性微电极的构建和校准。已经探索了新的扫描算法和数据评估工具,以获得比电位响应相关的时间常数所限制的更快的采集速率。
更新日期:2017-12-01
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