Initiation and growth of a single pit on 316L stainless steel: Influence of SO42− and ClO4− anions

- A modified SECM setup allowing the study of a single pit initiation and propagation was reported.
- Competition between anodic dissolution reaction and passivation of bare metal during a single pit propagation was investigated.
- The influence of the nature of the anion in the electrolyte was determining for the pit propagation mechanism.