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Innovating pulsed electrophoretic deposition of boehmite nanoparticles dispersed in an aqueous solution, into a model porous anodic film, prepared on aluminium alloy 1050

Caubert, Florent and Taberna, Pierre-Louis and Arurault, Laurent Innovating pulsed electrophoretic deposition of boehmite nanoparticles dispersed in an aqueous solution, into a model porous anodic film, prepared on aluminium alloy 1050. (2016) Surface and Coatings Technology, 302. 293-301. ISSN 0257-8972

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Official URL: http://dx.doi.org/10.1016/j.surfcoat.2016.06.009

Abstract

The present study investigates the pulsed electrophoretic deposition of boehmite particles, previously dispersed in an aqueous solution, into the pores of a model anodic film, prepared using phosphoric acid electrolyte, on an aluminium alloy 1050 (AA1050) substrate. Particles were successfully inserted into the pores, despite some limitations resulting both from the barrier layer, which transpired to be semi-conducting, and from water electrolysis. To address this issue, a pulsed electric field, set to above a threshold value, allowed a current to be sent through the cell, this being accompanied by a reduction of water electrolysis; insertion of particles thus became possible. Scanning Electron Microscope (FEG-SEM) observations, X-Ray Diffraction (XRD) spectroscopy and Electrochemical Impedance Spectroscopy (EIS) studies gave some clues as to the reality of particle impregnation into the pores. Furthermore, an improvement in the porous anodic film filling was achieved using hydrothermal post-treatment

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Surface and Coatings Technology website : http://www.sciencedirect.com/science/journal/02578972
HAL Id:hal-01372645
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Funders:
Conseil Régional de Midi-Pyrénées - Mecaprotec Industries
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Deposited By: cirimat webmestre
Deposited On:20 Jul 2016 13:29

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