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Thickness and compo...
Thickness and composition of native oxides and near-surface regions of Ni superalloys
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- Larsson, Alfred (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
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- D'Acunto, Giulio (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
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- Vorobyova, Mariya (författare)
- Lund Univ, Div Synchrotron Radiat Res, Lund, Sweden.,Lund University
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- Abbondanza, Giuseppe (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
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- Lienert, Ulrich (författare)
- DESY Photon Sci, Hamburg, Germany.,German Electron Synchrotron (DESY)
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- Hegedus, Zoltan (författare)
- DESY Photon Sci, Hamburg, Germany.,German Electron Synchrotron (DESY)
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- Preobrajenski, Alexei (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Merte, Lindsay R. (författare)
- Malmö University,Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM)
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- Eidhagen, Josefin (författare)
- Sandvik Mat Technol, Sandviken, Sweden.,Sandvik Materials Technology
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- Delblanc, Anna (författare)
- Sandvik Mat Technol, Sandviken, Sweden.,Sandvik Materials Technology
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- Pan, Jinshan, 1962- (författare)
- KTH Royal Institute of Technology,KTH,Yt- och korrosionsvetenskap,KTH Royal Inst Technol, Div Surface & Corros Sci, Stockholm, Sweden.
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- Lundgren, Edvin (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
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388 .- 1873-4669. ; 895
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://mau.diva-por... (primary) (Raw object)
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- The surface chemistry and thickness of the native oxide, hydroxide, and modified sub-surface layer of three Ni superalloys (alloy 59, 625, and 718) were determined by synchrotron X-ray Photoelectron Spectroscopy (XPS) and X-ray Reflectivity (XRR). Taking advantage of the synchrotron radiation techniques, a procedure for normalizing the photoelectron intensity was employed, which allowed for accurate quantitative analysis revealing a total oxide thickness for all samples of 12-13 A, a hydroxide layer of 2-3 A, and a thickness of the sub-surface alloy layer of 20-35 A. The thickness results were compared to structural atomic models suggesting that the oxide thickness corresponds to four planes of metal cations in the oxide matrix. The XPS data revealed that the native oxides were enriched in Cr3+, Mo-(4,Mo-5,Mo-6)+, and Nb5+, while no Ni oxide was detected. The hydroxide layer mainly contained Ni2+ and Cr3+ hydroxide. The sub-surface layer was enriched in Ni and depleted in Cr, Fe, Mo, and Nb. The obtained oxide composition can be explained using thermodynamics, and it was found that the oxide composition correlates with the enthalpy of oxide formation for the metal elements in the alloys. Finally, the advantages of synchrotron radiation for composition and thickness determination are discussed.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- XPS
- X-ray photoelectron spectroscopy
- XRR
- X-ray reflectivity
- Synchrotron
- Nickel alloy
- Ni
- Cr
- Mo
- Fe
- Nb
- Superalloy
- Oxide
- Passive film
- Native oxide
- Corrosion
- Corrosion
- Cr
- Fe
- Mo
- Native oxide
- Nb
- Ni
- Nickel alloy
- Oxide
- Passive film
- Superalloy
- Synchrotron
- X-ray photoelectron spectroscopy
- X-ray reflectivity
- XPS
- XRR
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- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Larsson, Alfred
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D'Acunto, Giulio
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Vorobyova, Mariy ...
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Abbondanza, Gius ...
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Lienert, Ulrich
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Hegedus, Zoltan
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visa fler...
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Preobrajenski, A ...
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Merte, Lindsay R ...
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Eidhagen, Josefi ...
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Delblanc, Anna
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Pan, Jinshan, 19 ...
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Lundgren, Edvin
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Metallurgi och m ...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
- Artiklar i publikationen
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Journal of Alloy ...
- Av lärosätet
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Kungliga Tekniska Högskolan
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Malmö universitet
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Lunds universitet