Autor(es):
Souza, Maria Eliziane Pires de, 1973- ; Cardona, Margarita Ballester, 1944- ; Freire, Celia Marina de Alvarenga, 1960-
Data: 2007
Identificador Persistente: https://hdl.handle.net/20.500.12733/1666337
Origem: Oasisbr
Assunto(s): Titânio; Corrosão; Titanium; Corrosion; Anodic oxide film; Anodising; Electrochemical impedance spectroscopy; Artigo original; Titânio; Titânio; Corrosão; Corrosão; Titanium; Titanium; Corrosion; Corrosion; Anodic oxide film; Anodic oxide film; Anodising; Anodising; Electrochemical impedance spectroscopy; Electrochemical impedance spectroscopy; Artigo original; Artigo original
Descrição
Agradecimentos: The authors gratefully acknowledge Capes and FAEP for the financial support and LNLS for Scanning Electron Micrographs
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
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
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