A three-dimensional electrode array probe designed for visualising complex and dynamically changing internal pipeline corrosion

This short communication describes a corrosion probe design concept based on a three-dimensional electrochemically integrated electrode array. A representative probe was made for probing complex localised corrosion inside a liquid-containing pipe. Results demonstrate that the probe has sufficient temporal and spatial resolutions required for in-situ monitoring of atmospheric corrosion, channelling corrosion and flow-affected corrosion occurring simultaneously inside the pipe, and for investigating the effects of corrosion influencing factors including differential aeration, liquid flowing, pH and inhibitors. This work suggests that the three-dimensional electrode array probe is a promising tool for probing multi-phase and multi-mechanism localised corrosion in complex industrial environment.