Gerengi Husnu, Cabrini Marina, Solomon Moses M, Kaya Ertugrul
Corrosion Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Düzce University, 81620 Düzce, Turkey.
Department of Engineering and Applied Sciences, University of Bergamo, 24044 Bergamo BG, Italy.
ACS Omega. 2022 Mar 29;7(14):11929-11938. doi: 10.1021/acsomega.2c00066. eCollection 2022 Apr 12.
Dynamic electrochemical impedance spectroscopy (dynamic EIS) has the capacity to track changes on surfaces in a changing corrosive system, an advantage it holds over classical EIS. We used the dynamic EIS approach to provide insight into the corrosion behavior of the AZ91D Mg alloy in simulated body fluid for 30 h at 25 °C. The results reveal that the impedance response of the alloy is influenced by the immersion time. Between 0 and 7 h, impedance with three time constants was obtained, whereas two-time-constant impedance spectra were obtained between 8 and 30 h of immersion. The results confirm the breakdown of the corrosion product at longer immersion times.
