A study of the 42CrMo4 steel surface by quantitative XPS electron spectroscopy |
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Authors: | M. Flori B. Gruzza G. Monier |
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Affiliation: | a “Politehnica” University of Timisoara, Faculty of Engineering of Hunedoara, Str. Revolutiei, No. 5, 331128 Hunedoara, Romania b LASMEA, UMR CNRS 6602, Blaise Pascal University, 63177 Aubiere Cedex, France |
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Abstract: | Quantitative X-ray photoelectron spectroscopy was used to characterize the native oxide film formed on 42CrMo4 steel surface by air exposure in normal conditions. In order to determine the thickness and composition of the oxide layer we have used a stacking layer model together with experimental XPS sputtering depth profiling. At a nanoscale study, to obtain quantitative results one must take into account fundamental parameters like the attenuation depth of photoelectrons. We have found that both lepidocrocit (γ-FeOOH) and magnetite (Fe3O4) were present and the total thickness of the oxide layer was 16 monolayers. |
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Keywords: | Steel Iron oxide X-ray photoelectron spectroscopy Argon ion sputtering Depth profiling |
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