Electrodeposition of black chromium thin films from trivalent chromium-ionic liquid solution

Eugénio, S.; Vilar, Rui; Rangel, C. M.; Baskaran, I.

http://hdl.handle.net/10400.9/897

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Abstract(s)

In the present study, black chromium thin films were electrodeposited from a solution of 1-butyl-3- methylimidazolium tetrafluoroborate ([BMIm][BF4] ionic liquid containing trivalent chromium (Cr(III)). Homogeneous and well adherent coatings have been obtained on nickel, copper and stainless steel substrates. The nucleation and growth of the films were investigated by cyclic voltammetry and current-density/time transient techniques. SEM/EDS, XPS and XRD were used to study the morphology, chemical composition and structure of the films. The coatings consist of a mixture of metallic chromium and chromium oxides (black chromium) and present a sub-micrometric granular structure.

Keywords

Ionic liquids Black cromium Electrodeposition

URI

http://hdl.handle.net/10400.9/897

Citation

Eugénio, S.; Vilar, R.; Rangel, C. M.; Baskaran, I. Electrodeposition of black chromium thin films from trivalent chromium-ionic liquid solution. In: ICAM 2009, 11th International Conference on Advanced Materials, Rio de Janeiro, Brasil, September 20-21, 2009