Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1663051 | Surface and Coatings Technology | 2006 | 9 Pages |
Abstract
The electrodeposition and surface morphology of aluminium on tungsten (W) and aluminium (Al) electrodes from 2 : 1 molar ratio AlCl3-[EMIm]Cl ionic liquids were investigated. Analyses of the chronoamperograms indicate that the deposition process of aluminium on W substrates was controlled by instantaneous nucleation with diffusion-controlled growth, while the deposition processes of aluminium on Al electrodes were found to be associated with kinetic limitations. Constant potential deposition experiments showed that the electrodeposits obtained on both W and Al electrodes between â 0.10 and â 0.40 V (vs. Al(III)/Al) are dense, continuous and well adherent. Dense aluminium deposits were also obtained on Al substrates using constant current deposition between 10 and 70 mA/cm2, and the current efficiency was found to be dependent of the current density varying from 85% to 100%.
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Materials Science
Nanotechnology
Authors
T. Jiang, M.J. Chollier Brym, G. Dubé, A. Lasia, G.M. Brisard,