Electrodeposition of Co and Co composites with carbon nanotubes using choline chloride-based ionic liquids

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Nuno Pereira (Autor) FCUP; Brincoveanu, O (Autor) Outra; Pantazi, AG (Autor) Outra; Carlos M Pereira (Autor) FCUP; araujo, j. p. (Autor) FCUP; Silva, F (Autor) FCUP; Enachescu, M (Autor) Outra; Anicai, L (Autor) Outra

Revista

Título: Surface and Coatings Technology

Vol. 324

Páginas: 451-462

ISSN: 0257-8972

Editora: Elsevier

Indexação

ISI Web of Knowledge - 22 Citações

Scopus - 25 Citações

Outras Informações

ID Authenticus: P-00R-3HD

DOI: 10.1016/j.surfcoat.2017.06.002

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12