Journal Article

PUBDB-2019-02412

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Characterization of Native Oxide and Passive Film on Austenite/Ferrite Phases of Duplex Stainless Steel Using Synchrotron HAXPEEM

Långberg, M. ; Oernek, C.Extern* ; Zhang, F.Extern* ; Cheng, J.Extern* ; Liu, M.Extern* ; Grånäs, E.DESY* ; Wiemann, C.Extern* ; Gloskovskii, A.DESY* ; Matveyev, Y.Extern*DESY* ; Kulkarni, S.DESY* ; Noei, H.DESY* ; Keller, T. F.DESY* ; Lindell, D. ; Kivisaekk, U.Extern* ; Lundgren, E.Extern* ; Stierle, A.DESY* ; Pan, J. (Corresponding author)Extern*

2019
Electrochemical Soc. Pennington, NJ

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Please use a persistent id in citations: doi:10.1149/2.0421911jes  doi:10.3204/PUBDB-2019-02412

Abstract: A new measurement protocol was used for microscopic chemical analysis of surface oxide films with lateral resolution of 1 μm.The native air-formed oxide and an anodic passive film on austenite and ferrite phases of a 25Cr-7Ni super duplex stainless steelwere investigated using synchrotron hard X-ray photoemission electron microscopy (HAXPEEM). Pre-deposited Pt-markers, incombination with electron backscattering diffraction mapping (EBSD), allowed analysis of the native oxide on individual grains ofthe two phases and the passive film formed on the same area after electrochemical polarization of the sample. The results showeda certain difference in the composition of the surface films between the two phases. For the grains with (001) crystallographicface // sample surface, the native oxide film on the ferrite contained more Cr oxide than the austenite. Anodic polarization up to1000 mV/$_{Ag/AgCl}$ in 1M NaCl solution at room temperature resulted in a growth of the Cr- and Fe-oxides, diminish of Cr-hydroxide,and an increased proportion of Fe$^{3+}$ species.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Nanolab (FS-NL)
3. PETRA III Extension (FS-PEX)

Research Program(s):

1. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
2. 6G3 - PETRA III (POF3-622) (POF3-622)
3. NFFA-Europe_supported - Technically supported by Nanoscience Foundries and Fine Analysis Europe (2020_Join2-NFFA-Europe_funded) (2020_Join2-NFFA-Europe_funded)
4. SWEDEN-DESY - SWEDEN-DESY Collaboration (2020_Join2-SWEDEN-DESY) (2020_Join2-SWEDEN-DESY)
5. NFFA-Europe - NANOSCIENCE FOUNDRIES AND FINE ANALYSIS - EUROPE (654360) (654360)

Experiment(s):

1. DESY NanoLab: Microscopy
2. DESY NanoLab: Surface Spectroscopy
3. PETRA Beamline P22 (PETRA III)

Appears in the scientific report 2019

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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