Abstract
To analyze the repassivation mechanism induced by SO42− ions, in situ monitoring of the crevice corrosion morphology on Type 316L stainless steel was performed. The repassivation of the crevice corrosion was observed when the solution was changed from 1 M NaCl to 0.88 M Na2SO4 or to 1 M NaCl-0.88 M Na2SO4. The active dissolution of Type 316L stainless steel was suppressed by SO42− ions at pH 0.4 in anodic polarization measurements. The transition from active to passive states inside the crevice was likely promoted by SO42− ions.
Original language | English |
---|---|
Pages (from-to) | 131-140 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 127 |
DOIs | |
Publication status | Published - 2017 Oct |
Keywords
- Crevice corrosion
- Potentiostatic
- Repassivation
- Stainless steel
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)