| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5440087 | Corrosion Science | 2017 | 14 Pages |
Abstract
Electrochemical conditions for inducing rouging on surface of AISI 316L in quasi neutral aqueous solution are studied. Potentiostatic polarization at 0.6 V vs. SSC at pH â¼Â 7 allowed growth of colourless passive films with a band gap slightly lower than that estimated for the oxide grown on the SS surface by air exposure due to chromium dissolution. Under stronger anodic polarization (UE = 1.5 V vs. SSC) coloured passive films are formed, mainly constituted by iron oxide according to their band gap (Eg = 2.0 eV). Etching in citric acid at 60 °C results to be effective in removing rouging.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
F. Di Franco, M. Santamaria, G. Massaro, F. Di Quarto,