Sensing application in the precursor region of localized corrosion by scanning electrochemical microscopy
Scanning electrochemical microscopy (SECM) has been established as an indispensible tool in the analysis of corrosion. The aim of this article is to review the recent advances of this technique and its applications in measuring, characterizing and evaluating the precursor region of localized corrosion. The topography and redox activities of the metal/electrolyte solution interface at a local scale during the corrosion processes can thus be described in real time with high spatial resolution. In addition, relevant references from the advent of SECM integrated with other techniques to improve its resolution in investigating the precursor region during local corrosion are also presented with a special discussion on high resolution images.