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Sökning: id:"swepub:oai:lup.lub.lu.se:376e203b-b584-4ea1-b30b-c1a150fac20f" > Influence of Surfac...

Influence of Surface Strain on Passive Film Formation of Duplex Stainless Steel and Its Degradation in Corrosive Environment

Örnek, Cem (författare)
KTH,KTH Royal Institute of Technology,Yt- och korrosionsvetenskap
Långberg, Marie (författare)
KTH,KTH Royal Institute of Technology,Swerim, SE-16407 Kista, Sweden.,Yt- och korrosionsvetenskap
Evertsson, Jonas (författare)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,German Electron Synchrotron (DESY),Justus Liebig University Giessen,Lund Univ, Div Synchrotron Radiat Res, SE-22100 Lund, Sweden.;Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany.;Justus Liebig Univ Giessen, Phys Chem Dept, D-35392 Giessen, Germany.
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Harlow, Gary (författare)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Div Synchrotron Radiat Res, SE-22100 Lund, Sweden.
Linpé, Weronica (författare)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Div Synchrotron Radiat Res, SE-22100 Lund, Sweden.
Rullik, Lisa (författare)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Div Synchrotron Radiat Res, SE-22100 Lund, Sweden.
Carlà, Francesco (författare)
Diamond Light Source, Didcot OX11 0DE, Oxon, England.
Felici, Roberto (författare)
University of Rome Tor Vergata,SPINCNR, Area Ric Roma 2 Tor Vergata, I-00133 Rome, Italy.
Kivisäkk, Ulf (författare)
Sandvik Materials Technology,Sandvik Mat Technol, SE-81181 Sandviken, Sweden.
Lundgren, Edvin (författare)
Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Div Synchrotron Radiat Res, SE-22100 Lund, Sweden.
Pan, Jinshan, 1962- (författare)
KTH,KTH Royal Institute of Technology,Yt- och korrosionsvetenskap
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 (creator_code:org_t)
2019-04-04
2019
Engelska.
Ingår i: Journal of the Electrochemical Society. - : The Electrochemical Society. - 0013-4651 .- 1945-7111. ; 166:11, s. 3071-3080
Relaterad länk:
http://dx.doi.org/10... (free)
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • The effect of surface strain on the passive film evolution of SAF 2507 super duplex stainless steel exposed to ambient air and 0.1 M NaCl solution with varying anodic polarization at room temperature has been investigated using in-situ grazing incidence X-ray diffraction (GIXRD) in combination with electrochemical measurements. Surface strain affected the crystallinity of the passive film as such that the surface oxides/hydroxides were predominantly amorphous, with some minor crystalline CrOOH and FeOOH present in the film. Crystalline CrOOH was seen to diminish in volume upon immersion in the NaCl solution, well-possibly becoming amorphous during anodic polarization, whereas crystalline FeOOH was seen to increase in volume during polarization to the passive potential regime. Strain relaxation, associated with metal dissolution, occurred in both austenitic and ferritic grains during immersion in the electrolyte. Anodic polarization to the transpassive regime led to maximum strain relaxation, occurring more on the austenite than the ferrite. The selective transpassive dissolution nature of the ferrite was significantly reduced due to large strains in the austenite. Passive film breakdown was reflected by enhanced dissolution of Fe, Cr, Mo and Ni occurring simultaneously around 1300 mV vs. Ag/AgCl.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Kemiteknik -- Korrosionsteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
NATURVETENSKAP  -- Kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Nyckelord

Corrosion
duplex stainless steel
grazin-incidence x-ray diffraction (GIXRD)
Passivity
Surface Science
Transpassive breakdown

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