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artículos
Título:
DETERMINATION OF THE THICKNESS AND CRYSTALLINE STRUCTURE OF TiO2 COATINGS MADE BY ANODIC OXIDATION OF Ti-6Al-4V
Autor/es:
M. L. VERA; M. R. ROSENBERGER; D. G. LAMAS; C.E. SCHVEZOV; A. E. ARES
Revista:
Activity Report of the Brazilian Synchrotron Light Laboratory
Editorial:
ABTLuS-LNLS-Editora Cubo
Referencias:
Lugar: Campinas. Sao Paulo. Brasil.; Año: 2010 vol. 1 p. 1502 - 1502
ISSN:
1518-0204
Resumen:
At present
Ti-6Al-4V alloy is used in prosthetic devices for human implants due to the
excellent corrosion resistance, bio- and hemo-compatibility, which are known to
be associated to the formation of TiO2 on the surface. Oxide films in metals can also be produced
by anodic oxidation, resulting in films thicker than the natural oxides [1]. By anodizing at low voltages
smooth and amorphous films
can be obtained [1]. For haemocompatible applications smooth and crystalline
TiO2 films are required
[2]. One way to obtain such kind of films is doing a thermal treatment after anodic oxidation. TiO2 films on Ti-6Al-4V substrates were
produced by anodic oxidation at different voltages with and without thermal treatment.
Thicknesses and phases were determined. The results of the influence of process parameters on
color, thickness, and crystalline structure of the films are presented.