RT Journal Article
T1 Synthesis of anodic films in the presence of aniline and TiO2 nanoparticles on AA2024-T3 aluminium alloy
A1 Zubillaga, O.
A1 Cano, F. J.
A1 Azkarate, I.
A1 Molchan, I. S.
A1 Thompson, G. E.
A1 Skeldon, P.
AB Coatings, comprising an inner porous anodic alumina film and an outer polyaniline/TiO2 nanoparticle layer, were electrochemically synthesised on an AA2024-T3 aluminium alloy by single-step, anodic polarisation in an oxalic acid-based electrolyte. The morphology and composition of the coatings were examined by TEM, SEM and XPS, with the size and zeta-potential of the TiO2 nanoparticles in the oxalic acid solution also measured. Observation of the growth of the coating during of anodic polarisation revealed that a distinct, two-layered coating is formed from the early stages of polarisation, with the anodic film forming at a constant rate and the outer layer developing at a rate that decreases markedly with times beyond about 30 min. Nanoparticles, agglomerated in the electrolyte, migrate to the anode due to the negative zeta-potential and form the nanoparticle-containing layer at the surface of anodic film. Such particles are not incorporated in the pores due to agglomeration and disordered film porosity at the outer layer of the anodic film.
SN 0040-6090
YR 2009
FD 2009-10-30
LK https://hdl.handle.net/11556/4449
UL https://hdl.handle.net/11556/4449
LA eng
NO Zubillaga , O , Cano , F J , Azkarate , I , Molchan , I S , Thompson , G E & Skeldon , P 2009 , ' Synthesis of anodic films in the presence of aniline and TiO 2 nanoparticles on AA2024-T3 aluminium alloy ' , Thin Solid Films , vol. 517 , no. 24 , pp. 6742-6746 . https://doi.org/10.1016/j.tsf.2009.05.039
NO The authors acknowledge the European Commission for the funding to undertake this work under the project MULTIPROTECT (Contract N° NMP3-CT-2005-011783).
DS TECNALIA Publications
RD 29 jul 2024