First stages of surface steel nitriding: X-ray photoelectron spectroscopy and electrical measurements |
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Authors: | M Flori B Gruzza L Bideux G Monier C Robert-Goumet Z Benamara |
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Institution: | a“Politehnica” University of Timisoara, Faculty of Engineering of Hunedoara, 331128 Hunedoara, Romania;bLASMEA, UMR CNRS 6602, Blaise Pascal University, 63177 Aubiere Cedex, France;cLaboratoire de Microélectronique Appliquée, Sidi Bel Abbés University, 22000 Sidi Bel Abbés, Algeria |
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Abstract: | Quantitative and qualitative analysis techniques were employed to study the first stages of ultra-high vacuum plasma nitriding of the 42CrMo4 steel. At constant treatment temperature, maintained for all samples at about 360 °C, we have established the influence of treatment time on the chemical composition, thickness and electrical properties of the nitrided layer.In this purpose it was used a stacking atomic layer model describing the sample surface, which takes into account the attenuation depth of photoelectrons by the atomic monolayers. So, we have found that after 2 h of nitriding in laboratory conditions, 70% of the nitrided layer was composed of iron oxide. Also, I–V measurements indicate an influence of the nitride overlayer with increasing treatment time. |
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Keywords: | Plasma nitriding Glow-discharge source (GDS) 42CrMo4 steel X-ray photoelectron spectroscopy Depth profiling Electrical measurements |
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