Fig. 11: Graphical summary of findings from this study.

a Proposed passivation evolution and material removal mechanisms for the rolled and SLMed samples during ECM and LECM in correlation to current pulse analysis. b Cavity dimensions showing removal localisation with LECM and smaller dimensions of the more corrosion-resistant SLMed sample. Error bars are of standard deviation of 4 measurements. c Qualitative representation of processing windows. The sample current pulses of d Inconel 718 and e nitinol.