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In-situ synchrotron GIXRD study of passive film evolution on duplex stainless steel in corrosive environment

Örnek, Cem ; Långberg, Marie ; Evertsson, Jonas LU ; Harlow, Gary LU ; Linpé, Weronica LU ; Rullik, Lisa LU ; Carlà, Francesco ; Felici, Roberto ; Bettini, Eleonora and Kivisäkk, Ulf , et al. (2018) In Corrosion Science 141. p.18-21
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 1 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.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
De-alloying, Duplex stainless steel, Grazing-incidence X-ray diffraction (GIXRD), Oxide film, Passivity, Selective dissolution
in
Corrosion Science
volume
141
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:85049421217
ISSN
0010-938X
DOI
10.1016/j.corsci.2018.06.040
language
English
LU publication?
yes
id
5afa9374-5d3f-44d3-89df-5454b3f8b8c8
date added to LUP
2018-07-27 12:56:05
date last changed
2022-04-10 00:48:08
@article{5afa9374-5d3f-44d3-89df-5454b3f8b8c8,
  abstract     = {{<p>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 1 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.</p>}},
  author       = {{Örnek, Cem and Långberg, Marie and Evertsson, Jonas and Harlow, Gary and Linpé, Weronica and Rullik, Lisa and Carlà, Francesco and Felici, Roberto and Bettini, Eleonora and Kivisäkk, Ulf and Lundgren, Edvin and Pan, Jinshan}},
  issn         = {{0010-938X}},
  keywords     = {{De-alloying; Duplex stainless steel; Grazing-incidence X-ray diffraction (GIXRD); Oxide film; Passivity; Selective dissolution}},
  language     = {{eng}},
  month        = {{08}},
  pages        = {{18--21}},
  publisher    = {{Elsevier}},
  series       = {{Corrosion Science}},
  title        = {{In-situ synchrotron GIXRD study of passive film evolution on duplex stainless steel in corrosive environment}},
  url          = {{http://dx.doi.org/10.1016/j.corsci.2018.06.040}},
  doi          = {{10.1016/j.corsci.2018.06.040}},
  volume       = {{141}},
  year         = {{2018}},
}