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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Study of Ti-6Al-4V biomaterial using electrochemistry and XPS techniques

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Author(s):
Ivan Ramires [1] ; Antonio Carlos Guastaldi [2]
Total Authors: 2
Affiliation:
[1] Universidade Estadual Paulista. Instituto de Química de Araraquara
[2] Universidade Estadual Paulista. Instituto de Química de Araraquara
Total Affiliations: 2
Document type: Journal article
Source: Química Nova; v. 25, n. 1, p. 10-14, 2002-02-00.
Abstract

The Ti-6Al-4V alloy used as biomaterial has been used over the last years. The literature shows controversies concerning the kind and the chemical composition of the film naturally and elctrochemically formed on the surface of the titanium alloy. The presente work studies the film composition before and after the electrochemical polarization tests using the x Ray photoelectron spectroscopy (XPS) technique. The results showed that the film naturally formed on the metallic surface is constituted of a variety of oxides which do not cover the whole surface of the metallic alloy and therefore, metallic Ti, Al and V can be found on the uncovered areas. The tests of XPS made after the polarization up to 4V (SCE) showed that the electrochemically formed film is constituted only of TiO2 and that the peak current observed around 1,5 V (SCE) is due to the oxidation of any kind of titanium oxide or the growth of the film. (AU)