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Lateral variation of the native passive film on super duplex stainless steel resolved by synchrotron hard X-ray photoelectron emission microscopy

Långberg, M. ; Zhang, F. ; Grånäs, E. LU ; Örnek, C. ; Cheng, J. ; Liu, M. LU ; Wiemann, C. ; Gloskovskii, A. ; Keller, T. F. and Schlueter, C. , et al. (2020) In Corrosion Science 174.
Abstract

A native passive film on 25Cr-7Ni super duplex stainless steel was analyzed using synchrotron hard X-ray photoemission electron microscopy, focusing on variations between individual grains of ferrite and austenite phases. The film consists of an oxide inner layer and an oxyhydroxide outer layer, in total 2.3 nm thick. The Cr content is higher in the outer than the inner layer, ca. 80 % on average. The Cr content is higher on ferrite than austenite, whereas the thickness is rather uniform. The grain orientation has a small but detectable influence, ferrite (111) grains have a lower Cr content than other ferrite grains.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
duplex stainless steel, lateral variation, passive film, photoelectron emission spectroscopy, synchrotron technique
in
Corrosion Science
volume
174
article number
108841
publisher
Elsevier
external identifiers
  • scopus:85087508713
ISSN
0010-938X
DOI
10.1016/j.corsci.2020.108841
language
English
LU publication?
yes
id
981aa340-b6e8-4c1a-adf7-2cfbfaf482b8
date added to LUP
2020-07-15 10:53:16
date last changed
2023-12-04 16:43:44
@article{981aa340-b6e8-4c1a-adf7-2cfbfaf482b8,
  abstract     = {{<p>A native passive film on 25Cr-7Ni super duplex stainless steel was analyzed using synchrotron hard X-ray photoemission electron microscopy, focusing on variations between individual grains of ferrite and austenite phases. The film consists of an oxide inner layer and an oxyhydroxide outer layer, in total 2.3 nm thick. The Cr content is higher in the outer than the inner layer, ca. 80 % on average. The Cr content is higher on ferrite than austenite, whereas the thickness is rather uniform. The grain orientation has a small but detectable influence, ferrite (111) grains have a lower Cr content than other ferrite grains.</p>}},
  author       = {{Långberg, M. and Zhang, F. and Grånäs, E. and Örnek, C. and Cheng, J. and Liu, M. and Wiemann, C. and Gloskovskii, A. and Keller, T. F. and Schlueter, C. and Kulkarni, S. and Noei, H. and Lindell, D. and Kivisäkk, U. and Lundgren, E. and Stierle, A. and Pan, J.}},
  issn         = {{0010-938X}},
  keywords     = {{duplex stainless steel; lateral variation; passive film; photoelectron emission spectroscopy; synchrotron technique}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Corrosion Science}},
  title        = {{Lateral variation of the native passive film on super duplex stainless steel resolved by synchrotron hard X-ray photoelectron emission microscopy}},
  url          = {{http://dx.doi.org/10.1016/j.corsci.2020.108841}},
  doi          = {{10.1016/j.corsci.2020.108841}},
  volume       = {{174}},
  year         = {{2020}},
}