Understanding the Corrosion Behavior of the AZ91D Alloy in Simulated Body Fluid through the Use of Dynamic EIS
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Abstract
Description
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.
Keywords
QD Chemistry