Field deployable impedance-based corrosion sensor

• Published in: Scientific reports Vol. 12; no. 1; p. 236
• Main Authors: Li, Jiajun, Jiang, Xiaoxue, Khan, Faheem, Ye, Xuanjie, Wang, Shuren, Chen, Jie
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 07.01.2022; Nature Publishing Group; Nature Portfolio
• Subjects: 639/166/987; 639/638; Corrosion; Electrochemistry; Humanities and Social Sciences; Impedance; multidisciplinary; Science; Science (multidisciplinary); Sensors; Spectroscopy; Spectrum analysis
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-021-03840-5

Electrochemical impedance spectroscopy (EIS) has been used in various applications, such as metal corrosion monitoring. However, many conventional corrosion monitoring setups are bulky and inconvenient for in-situ testing. The purpose of this work is to reduce the size of the whole corrosion monitoring system. We utilized EIS to design a field deployable impedance-based corrosion sensor (FDICS), capable of performing in-situ EIS analysis. Experiments verified the sensor’s accuracy, and the results showed that the sensor performed similarly to a bench-top EIS machine when we tested on circuit models. Furthermore, we used the proposed FDICS to monitor a metal corrosion experiment and performed EIS. The result showed that the proposed FDICS is able to obtain the sample’s impedance spectroscopy, which could help researchers test its corrosion severity on a metallic sample in-situ. Compared to other bulky conventional setups, our device eliminates the design complexity while still showing insights into the corrosion reaction.