Fig. 4 | npj Materials Degradation

Fig. 4

From: Localized corrosion of low-carbon steel at the nanoscale

Fig. 4

Postmortem examination of 1018 steel region that experienced localized corrosion. Overlay of original grain boundaries on a postmortem a TEM image, with inset of crevice tip and arrows indicating the positions of bridging iron oxide structures observed in postmortem analysis, and b inverted TEM image of the crevice region showing corrosion product formation within and around the crevice. Scale bar indicates 200 nm. c EFTEM relative thickness map of the crevice region depicting increased local corrosion product formation surrounding the crevice. Outlines of the initial (gray) and final (black) cementite inclusion location are provided. Scale bar indicates 100 nm. d 3D representation of matrix-smoothed EFTEM relative thickness map, highlighting the final location of the cementite grain

Back to article page