Monitoring Effect of a Novel Electric Resistance-Electrochemistry Sensor on Erosion-Corrosion of Pipeline Steel

A novel electrical resistance-electrochemistry (ER-EC) sensor was developed, which can monitor erosion rate and corrosion rate simultaneously. The working performance of the ER-EC sensor was tested under static corrosion condition and erosion-corrosion condition using a flow loop simulating the working condition of pipeline. The results show that the ER-EC sensor can detect the occurrence of erosion-corrosion, and can realize the monitoring of erosion rate and corrosion rate. The erosion rate descended with the decrease of corrosion rate, indicating that the dynamic vibration of the erosion can be well captured through the ER-EC sensor.