Electrodeposition of Co and Co composites with carbon nanotubes using choline chloride-based ionic liquids
| Autor: | Nuno Monteiro Pereira, Aida Pantazi, João P. Araújo, Oana Brincoveanu, Carlos M. Pereira, Marius Enachescu, Liana Anicai, A. Fernando Silva |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound symbols.namesake law Materials Chemistry Composite material Eutectic system Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Deep eutectic solvent chemistry Ionic liquid Dispersion stability symbols Crystallite 0210 nano-technology Raman spectroscopy Cobalt |
| Zdroj: | Surface and Coatings Technology. 324:451-462 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2017.06.002 |
| Popis: | The paper presents experimental results regarding the electrodeposition and characterization of cobalt and cobalt composites with carbon nanotubes from a choline-chloride-based deep eutectic solvent. Dispersion stability of multi-walled carbon nanotubes (MWCNTs) was excellent in the eutectic solvent used. According to Raman and XRD analysis, the carbon nanotubes were successfully inserted into the metallic matrix. Furthermore, XRD results suggested that the incorporation of CNTs on the deposit promoted a preferred orientation of the Co crystallites on (220) plane. The Co and Co-composites coatings obtained onto a copper substrate are adherent and uniform. Pure Co deposit was formed by sharp edge grains, Co-composites appeared to be less compact and formed by relatively spherical particles connected by MWCNTS. Furthermore, it was found that the presence of MWCNTs contributed to decreasing the deposit's roughness. From corrosion tests, Co-composite films exhibit a comparable or slightly better corrosion performance as compared to pure Co films. |
| Databáze: | OpenAIRE |
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