Structural Changes in TiO2 Films Formed by Anodizing of Electro-Polished Titanium

Anodizing is a surface modification technique that is applied to growing oxide films on Ti to accelerate the osseointegration of an implant. Besides the surface roughness, the crystalline structure of these films can affect its performance as a biomaterial. For this reason, this technique has been r...

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Bibliographic Details
Published inMaterials science forum Vol. 869; pp. 689 - 692
Main Authors Codaro, Eduardo Norberto, Pereira, Marinalda Claudete, Acciari, Heloisa Andréa, López Díaz, Patricia
Format Journal Article
LanguageEnglish
Published Pfaffikon Trans Tech Publications Ltd 01.08.2016
Subjects
Titanium
Biomaterial
Crystallinity
Anodizing
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Summary:Anodizing is a surface modification technique that is applied to growing oxide films on Ti to accelerate the osseointegration of an implant. Besides the surface roughness, the crystalline structure of these films can affect its performance as a biomaterial. For this reason, this technique has been refined to produce crystalline films without requiring heat treatments. For this purpose, TiO2 films were grown on Ti (grade 2) by anodizing with direct current at different potentials. Images obtained by optical microscopy with polarized light revealed a granular microstructure in various colors, as consequence of different crystalline orientations of the grains and films thickness. Raman spectroscopy showed that the films crystallinity is affected by variations in the applied potential and anodizing time.
Bibliography:Selected, peer reviewed papers from the 21st Brazilian Conference on Materials Science and Engineering (CBECIMAT), November 9-13, 2014, Cuiabá (MT), Brazil
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.869.689