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Influence of Oxygen Content and Microstructure on the Mechanical Properties and Biocompatibility of Ti–15 wt%Mo Alloy Used for Biomedical Applications
Materials 2014, 7(1), 542-553; doi:10.3390/ma7010542
Article

The Influence of Small Quantities of Oxygen in the Structure, Microstructure, Hardness, Elasticity Modulus and Cytocompatibility of Ti-Zr Alloys for Dental Applications

1
,
1
,
2
,
2
,
3
 and
1,*
1 UNESP—Univ. Estadual Paulista, Laboratório de Anelasticidade e Biomateriais, 17.033-360, Bauru, SP, Brazil 2 USP—Universidade de São Paulo, Faculdade de Odontologia, Departamento de Biomateriais e Biologia Oral, 05.508-900, São Paulo, SP, Brazil 3 USP—Universidade de São Paulo, Faculdade de Odontologia, Departamento de Ciências Biológicas, 17.012-901, Bauru, SP, Brazil
* Author to whom correspondence should be addressed.
Received: 31 October 2013 / Revised: 27 December 2013 / Accepted: 30 December 2013 / Published: 20 January 2014
(This article belongs to the Special Issue Titanium Materials for Biomedical Application 2013)
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Abstract

The mechanical properties of Ti alloys are changed significantly with the addition of interstitial elements, such as oxygen. Because oxygen is a strong stabilizer of the α phase and has an effect on hardening in a solid solution, it has aroused great interest in the biomedical area. In this paper, Ti-Zr alloys were subjected to a doping process with small amounts of oxygen. The influence of interstitial oxygen in the structure, microstructure and some selected mechanical properties of interest for use as biomaterial and biocompatibility of the alloys were analyzed. The results showed that in the range of 0.02 wt% to 0.04 wt%, oxygen has no influence on the structure, microstructure or biocompatibility of the studied alloys, but causes hardening of the alloys, increasing the values of the microhardness and causing variation in the elasticity modulus values.
Keywords: Ti alloys; interstitials; microstructure; mechanical properties; biocompatibility Ti alloys; interstitials; microstructure; mechanical properties; biocompatibility
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Vicente, F.B.; Correa, D.R.N.; Donato, T.A.G.; Arana-Chavez, V.E.; Buzalaf, M.A.R.; Grandini, C.R. The Influence of Small Quantities of Oxygen in the Structure, Microstructure, Hardness, Elasticity Modulus and Cytocompatibility of Ti-Zr Alloys for Dental Applications. Materials 2014, 7, 542-553.

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