Electrical behaviour, characteristics and properties of anodic aluminium oxide films coloured by nickel electrodeposition

Abstract

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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

“…This aspect is stressed in Figure 9 where the variation of the low frequency resistance, extracted from the real part of the impedance, is plotted as a function of the applied potential. As expected, the general trend is well described by an exponential decay law (y=2.10 6 e 0.8x , R²=0.982), typical for a diode-like behaviour as depicted by other authors [37,38]. These results show that a minimum potential of -3V/SCE (defined…”

“…In addition, as reported elsewhere [37][38][39], this layer behaves like an n-type semi-conductor with a specific threshold potential depending on the electrolytic medium used during barrier layer formation. Indeed, during the formation of anodic films, anions from the electrolyte (phosphate) and water are incorporated into the barrier layer [34,40] and act as electronic trappers.…”

Impact of the type of anodic film formed and deposition time on the characteristics of porous anodic aluminium oxide films containing Ni metal

“…to avoid perforation of the barrier layer. Thus, metal electro-deposition in the pores of the anodic films is generally performed using alternating or pulsed voltage (or sometimes current) (Lee et al, 1978, Zemanová et al, 2008a, 2008b, 2009a, 2009bArurault et al, 2010) to ensure renewal of the material in the confined volume of electrolyte contained in the mesopores.…”

Electrochemically Engineered Nanoporous Materials

“…In an effort to overcome the cell membrane and deliver molecules such as DNA, proteins, drugs or dyes, pSi has been used as a permeation agent [212,228]. In an effort to overcome the cell membrane and deliver molecules such as DNA, proteins, drugs or dyes, pSi has been used as a permeation agent [212,228].…”