| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 593891 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2012 | 8 Pages |
In this paper, it is proposed to study the deposition of nanoparticles by electrophoretic deposition (EPD) inside a porous anodic aluminum oxide film. Despite the presence of a highly resistive barrier layer at the metal-anodic film interface, porous anodic films on AA 1050A were successfully filled by 16-nm, surface modified silica particles. During this study it was shown that both the colloidal suspension conductivity and the applied electric field drive the penetration into the porous film. FEG-SEM observations showed that large (130-nm diameter), linear pores of 10 μm in length can be completely filled in 1 min. These results attest that porous anodic films can be efficiently filled with nanoparticles by EPD despite the presence of the barrier layer.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Pores of an anodic film were completely filled by electrophoretic impregnation. ► Electric field and dispersion conductivity control the impregnation depth. ► Progressive filling from the bottom of pores to the top.
