Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 34, Issue -, Pages 354-359Publisher
ELSEVIER
DOI: 10.1016/j.msec.2013.09.032
Keywords
Ti alloys; Microstructure; Mechanical properties; Biomaterials
Categories
Funding
- CNPq [307.471/2007-1]
- FAPESP [2007/06.478-9, 2009/00.042-0]
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New titanium alloys have been developed with the aim of utilizing materials with better properties for application as biomaterials, and Ti-Zr system alloys are among the more promising of these. In this paper, the influence of zirconium concentrations on the structure, microstructure, and selected mechanical properties of Ti-Zr alloys is analyzed. After melting and swaging, the samples were characterized through chemical analysis, density measurements, X-ray diffraction, optical microscopy, Vickers microhardness, and elasticity modulus. In-vitro cytotoxicity tests were performed on cultured osteogenic cells. The results showed the formation essentially of the alpha' phase (with hcp structure) and microhardness values greater than cp-Ti. The elasticity modulus of the alloys was sensitive to the zirconium concentrations while remaining within the range of values of conventional titanium alloys. The alloys presented no cytotoxic effects on osteoblastic cells in the studied conditions. (C) 2013 Elsevier B.V. All rights reserved.
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