On the in-situ characterisation of metastable pitting using 316L stainless steel as a case study

Guilherme Sander, Victor Cruz, Ninad Bhat, Nick Birbilis

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Metastable pitting upon 316L stainless steel was studied herein. The combination of electrochemical testing, in-situ imaging and ex-situ characterisation was carried out to address the following questions: Does each metastable pit site correspond to a single current transient or do multiple metastable pits occur at the same site? Is each recorded current transient a unique individual metastable pitting event? Does the calculated metal loss from electrochemical testing reconcile to physical damage? The results herein respond to these questions, and additionally, a user tool for analysis of metastable pitting is also presented herein.

Original languageEnglish
Article number109004
Number of pages10
JournalCorrosion Science
Publication statusPublished - Dec 2020


  • Electrochemical calculation
  • Pitting corrosion
  • Polarisation
  • Potentiostatic
  • Stainless steel

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