Field deployable impedance-based corrosion sensor

Abstract

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.

Improving the Corrosion Resistance of Aluminum Alloy by Creating a Superhydrophobic Surface Structure through a Two-Step Process of Etching Followed by Polymer Modification

“…In order to further verify the above experimental results, impedance tests of aluminum alloys with different etching timse were conducted, and the corresponding results are shown in Figure 12 . As known, in impedance spectroscopy, the larger the capacitive arc, the stronger the corrosion resistance [ 37 , 38 ]. It is clearly seen that the bare sample had the smallest capacitive arc size, so it possessed the worst corrosion resistance.…”

Is a 2D Nanostructured Surface Capable of Changing the Corrosion and Magnetic Properties of an Amorphous Alloy?

“…The change in CPE and Rp values, as well as their relationship to the value of the corrosion potential, allows the estimation of the protective function of the surface film formed during corrosion. There is a direct correlation between the charge transfer resistance and the protective function of the corrosion layer [34]. The samples show significant resistance to charge transfer (Table 3).…”

Corrosion Monitoring in Petroleum Installations—Practical Analysis of the Methods

“…A much more advanced technique for monitoring corrosion is the electrochemical impedance spectroscopy (EIS) method [ 47 , 48 , 49 ]. This measurement method employs an alternating current sinusoidal signal.…”