Fig. 3 | npj Materials Degradation

Fig. 3

From: Using macro and micro electrochemical methods to understand the corrosion behavior of stainless steel thermal spray coatings

Fig. 3

a SECM current map recorded 5 μm above the surface of (b) a polished SS 444 thermal spray coating indicating sites of dampened reactivity over SS particles and increase in reactivity over the oxide interconnecting regions. c SECM approach curves show positive feedback over all sites investigated across the coating (solid green) in contrast to the negative feedback measured over the bulk SS passive film (solid red). Theoretical positive and negative feedback are presented for comparison

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