Fig. 6: Corrosion systems modelling using equivalent circuits and evaluating the changes in various surface features affecting corrosion behavior. | npj Materials Degradation

Fig. 6: Corrosion systems modelling using equivalent circuits and evaluating the changes in various surface features affecting corrosion behavior.

From: The impact of minor Cr additions in low alloy steel on corrosion behavior in simulated well environment

Fig. 6

Equivalent circuits used for fitting the EIS results for samples (a) without corrosion scale and (b) with corrosion scale, and individual components as a function of exposure time to the electrolyte: (c) Rct; (d) Qdl; (e) Rfilm and (f) Qfilm. The Nyquist plot for sample 3Cr did not reveal the presence of a capacitive loop in the LF region and was fitted using equivalent circuit shown in (a). Therefore, film properties (Rfilm and Qfilm) could not be determined for sample 3Cr.

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