Surface analysis of electrochemically stripped CrN coatings
| Autor: | A. Conde, J. de Damborenea, T.J. Tate, Gonzalo García Fuentes, A.B. Cristóbal |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Stripping (chemistry) Analytical chemistry chemistry.chemical_element Surfaces and Interfaces General Chemistry engineering.material Condensed Matter Physics Electrochemistry Oxygen Nitrogen Surfaces Coatings and Films chemistry.chemical_compound chemistry Coating X-ray photoelectron spectroscopy Chemical engineering Physical vapor deposition Materials Chemistry engineering Chromium nitride |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2006.08.110 |
| Popis: | CrN multilayer coatings are possible replacements for hard chromium because of their good mechanical and chemical properties. This paper focuses on X-ray photoelectron spectroscopy (XPS) to study the mechanism of electrochemical stripping of multilayered Cr-N based coatings. The samples were produced by electron beam (e-beam) physical vapour deposition (PVD), on mirror polished M2 steel. Multilayers constituted three separate layers of CrN with intermediate interlayers of Cr (0.1 μm). The total coating thickness was in the range 4.5-5.5 μm. Under galvanostatic conditions, anodic oxidation of CrN leads to replacement of nitrogen in the CrN coating by oxygen, forming oxy-nitrides on the samples surface. Contrary to findings described by some authors, we have not detected Cr6+ in this research. © 2006 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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