Thickness and composition of native oxides and near-surface regions of Ni superalloys

Alfred Larsson,Giulio D’Acunto, Mariya Vorobyova,Giuseppe Abbondanza,Ulrich Lienert,Zoltan Hegedüs,Alexei Preobrajenski,Lindsay R. Merte,Josefin Eidhagen,Anna Delblanc,Jinshan Pan,Edvin Lundgren

Journal of Alloys and Compounds（2022）

引用 26|浏览9

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摘要

•Normalization of the photoelectron intensity increases quantitative accuracy of XPS.•Combination of synchrotron XPS and XRR allowed reliable quantitative analysis.•Results revealed a 13 Å thick oxide film and a 3 Å thick hydroxide layer on top.•The oxide was enriched in Nb, Mo and Cr while underlying alloy layer enriched in Ni.•Alloy element contribution to the oxide was correlated to their oxidation enthalpy.

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关键词

XPS,X-ray photoelectron spectroscopy,XRR,X-ray reflectivity,Synchrotron,Nickel alloy,Ni,Cr,Mo,Fe,Nb,Superalloy,Oxide,Passive film,Native oxide,Corrosion

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