WFRF:(Lewin Erik Dr. 1979 )
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- Srinath, AishwaryaUppsala universitet,Oorganisk kemi (author)
Near-surface analysis of magnetron sputtered AlCrNbYZrNx high entropy materials resolved by HAXPES
- Article/chapterEnglish2024
Publisher, publication year, extent ...
- Elsevier,2024
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-466218
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-466218URI
- https://doi.org/10.1016/j.apsusc.2024.160349DOI
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- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- Hard X-ray photoelectron spectroscopy (HAXPES) was used to perform a non-destructive depth profile of AlCrNbYZrNx (x = 0 to ∼50 at.%) thin films. The outermost native oxide of the pristine thin films contained the highest coordination oxides of every metal. Substoichiometric oxides or oxynitrides were found underneath. After exposure to 1.0 M HCl, increases in the most highly coordinated oxides of Cr, Nb, and Al in films with up to 37 at.% N were observed, suggesting that the low coordination oxides and oxynitrides in the subsurface had been further oxidised and were intermediary compounds in the passivation process. Al and Y oxides were lost to the HCl electrolyte, in agreement with their respective Pourbaix diagrams. The film with 49 at.% N showed little to no change in the data due to its high porosity which led to the oxide being detected at all probed depths. The metal core level spectra revealed a preferential order in which nitrogen bonded with the different metals. Nitrogen interacted first with Y, then Zr, then Al and Nb, and lastly Cr as the nitrogen content was increased.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Kemiteknik Korrosionsteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Chemical Engineering Corrosion Engineering hsv//eng
- NATURVETENSKAP Kemi Materialkemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Materials Chemistry hsv//eng
- NATURVETENSKAP Kemi Oorganisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Inorganic Chemistry hsv//eng
- Multicomponent alloys
- Passivation
- Corrosion
- Metal nitrides
- Synchrotron radiation
Added entries (persons, corporate bodies, meetings, titles ...)
- von Fieandt, KristinaUppsala universitet,Oorganisk kemi(Swepub:uu)krijo958 (author)
- Fritze, StefanUppsala universitet,Oorganisk kemi(Swepub:uu)stefr186 (author)
- Nyholm, Leif,1961-Uppsala universitet,Oorganisk kemi(Swepub:uu)lny18455 (author)
- Lewin, Erik,Dr.1979-Uppsala universitet,Oorganisk kemi(Swepub:uu)leeri169 (author)
- Lindblad, Rebecka,Dr,1984-Uppsala universitet,Energimaterialens fysik,Fysikalisk kemi,Oorganisk kemi(Swepub:uu)rebsc244 (author)
- Uppsala universitetOorganisk kemi (creator_code:org_t)
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- In:Applied Surface Science: Elsevier6660169-43321873-5584
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