Experimental study of mechanical and tribological behavior of nitrogen ion-implanted chromium thin films
| Autor: | Nazir Monteiro dos Santos, R.A.F. Mansur, C.B. Mello, W.E.S.S. Viana, Mario Ueda |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Chrome plating chemistry.chemical_element 02 engineering and technology engineering.material 01 natural sciences Corrosion Chromium Coating Plating 0103 physical sciences Materials Chemistry Thin film 010302 applied physics Metallurgy Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Plasma-immersion ion implantation Surfaces Coatings and Films Ion implantation chemistry visual_art visual_art.visual_art_medium engineering 0210 nano-technology |
| Zdroj: | Surface and Coatings Technology. 312:123-127 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2016.12.100 |
| Popis: | Pure chromium coatings can act as decorative or corrosion-resistant coating, but they present poor tribological properties. Even electroplated hard chrome coatings present some problems, as micro-cracks that reduce their corrosion protection and induce fatigue failure. In addition, Cr plating and its dangerous process with Cr VI baths has been banished in several countries. Physical or chemical post-coating treatments can be applied onto coatings in order to enhance their surface properties, as high temperature oxidation, chemical baths or ion implantation. Plasma immersion ion implantation process was carried on PVD chromium coatings as a post-coating treatment and nitrogen ions were implanted on the surface of deposited chromium thin films, by means of two different plasma sources for ion implantation. Both configurations for plasma sources led to the formation of nitride compounds on the surface of the films. The treated films presented low coefficient of friction, high hardness and better adhesion when compared to the untreated film. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect