Oxidation of vanadium nitride and titanium nitride coatings |
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| Authors: | A. Glaser F.P. Netzer G.A. Fontalvo |
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| Affiliation: | a Institute of Physics, Surface and Interface Physics, Karl-Franzens University Graz, A-8010 Graz, Austria
b Department of Physical Metallurgy and Materials Testing, University of Leoben, A-8700 Leoben, Austria |
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| Abstract: | The oxidation of vanadium nitride (VN) and titanium nitride (TiN) coatings in ultra-high vacuum has been investigated in situ by X-ray photoelectron spectroscopy. On the VN coatings mixed oxide layers containing V3+ and V4+ species form at elevated temperatures (?600°C) and at high oxygen exposures, which cover completely the VN surface. Under similar oxidation conditions the TiN surface oxidises partially to a mixture of TiO2 and Ti oxynitride (TiOxNy) phases. This oxidation behaviour has been correlated to the tribological properties of the VN and TiN coatings investigated recently. |
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| Keywords: | VN TiN Hard coatings XPS Titanium oxides Vanadium oxides |
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