Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65401
Type: Artigo de periódico
Title: EIS characterisation of Ti anodic oxide porous films formed using modulated potential
Author: Souza, MEP
Ballester, M
Freire, CMA
Abstract: Titanium, due to its excellent corrosion resistance, good mechanical properties and biocompatibility has been employed in many fields, such as in biomedical and dental implants. A passive oxide film formed on titanium surface is responsible for its high corrosion resistance. In the present study, oxide films were grown on titanium surface employing an anodising procedure using modulated potential, in a hydrofluoric acid solution. Electrochemical impedance spectroscopy was used to study the electrochemical behaviour of anodised Ti surface in a NaCl solution. The dependence of oxide film characteristics on forming conditions was analysed employing equivalent circuits. Samples were observed by scanning electron microscopy, in Jeol-JSM-5900LV microscope of the LME/LNLS, Campinas. It was observed that final anodising potential has an influence on the porous layer film morphology and that the anodising procedure with the chosen solution produces a double layer porous anodic film. (C) 2007 Elsevier B.V. All rights reserved.
Subject: titanium
anodic oxide film
anodising
electrochemical impedance spectroscopy
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.surfcoat.2007.03.005
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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