Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7893026 | Corrosion Science | 2018 | 4 Pages |
Abstract
This paper presents new findings about the passive film formed on super duplex stainless steel in ambient air and corrosive environments, studied by synchrotron grazing-incidence X-ray diffraction (GIXRD). The passive film, formed in air, was seen to be a nano-crystalline mixed-oxide. Electrochemical polarisation to the passive region in aqueous 1â¯M NaCl at room temperature resulted in an increase of the passive film thickness, preferential dissolution of Fe, and partial loss of crystallinity. After termination of polarization to the transpassive regime, reformation of the mixed-oxides was observed, showing a thicker, semi-crystalline, and more defective nature (more vacancies) with further new oxides/hydroxides.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Cem Ãrnek, Marie LÃ¥ngberg, Jonas Evertsson, Gary Harlow, Weronica Linpé, Lisa Rullik, Francesco Carlà , Roberto Felici, Eleonora Bettini, Ulf Kivisäkk, Edvin Lundgren, Jinshan Pan,