A sensor system to monitor the early-stage corrosion of A36 carbon steel

Abstract

An innovative sensor containing A36 carbon steel was explored for corrosion monitoring. After being soaked in an aerated 0.2 M NaCl solution, the sensor’s normalized electrical resistance (R/R0) decreased continuously with the extent of corrosion from 1 to 0.64. Meanwhile, the sensor’s normalized capacitance (C/C0) increased continuously from 1.0 to 1.42. The sensors can be attached to a structure to be monitored via a wired or wireless network connection for automatic data acquisition, processing, storage and evaluation