Anodization growth of TiO2 nanotubes on Ti-35Nb-7Zr-5Ta alloy : effects of anodization time, strain hardening, and crystallographic texture
Leonardo Fantont, Alessandra Cremasco, Mariana G. Mello, Rubens Caram
ARTIGO
Inglês
Agradecimentos: The authors gratefully acknowledge LNNano/CNPEM (National Nanotechnology Laboratory of the National Center for Research on Energy and Materials) for providing access to its SEM facilities. This work was supported by the Brazilian research funding agency FAPESP (São Paulo Research...
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Agradecimentos: The authors gratefully acknowledge LNNano/CNPEM (National Nanotechnology Laboratory of the National Center for Research on Energy and Materials) for providing access to its SEM facilities. This work was supported by the Brazilian research funding agency FAPESP (São Paulo Research Foundation) [Grant #2017/16715-0]
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Titanium and its alloys are the most suitable metallic materials available for the fabrication of medical implants. Their biocompatibility can be improved by the growth of TiO2 nanotubes on their surface by a simple anodization process. This work involved an investigation into the anodization...
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Titanium and its alloys are the most suitable metallic materials available for the fabrication of medical implants. Their biocompatibility can be improved by the growth of TiO2 nanotubes on their surface by a simple anodization process. This work involved an investigation into the anodization behavior of Ti-35Nb-7Zr-5Ta (TNZT) alloy, focusing on the effect of processing conditions (anodization time and type of electrolyte), previous strain hardening, and crystallographic texture of the substrate. Studies about the growth of TiO2 nanotubes on beta-type titanium alloys, as the TNZT alloy, are rare in the literature. The TNZT alloy proved to be an excellent substrate for the growth of TiO2 nanotubes, resulting in threefold longer nanotubes than those obtained on a commercially pure (CP) Ti substrate. Moreover, TiO2 nanowires grew after 6 h of anodization in an organic electrolyte, which could not be achieved using the CP-Ti substrate. Samples with different crystallographic textures displayed similar nanotube morphology and only slight differences in grain length, indicating that grain orientation played only a minor role in the growth kinetics. Lastly, the crystallization of nanotubes at 450 degrees C did not alter their morphology, but caused complete detachment of the TiO2 nanotubes at 700 degrees C
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2017/16715-0
Fechado
Fanton, Leonardo, 1985-
Autor
Anodization growth of TiO2 nanotubes on Ti-35Nb-7Zr-5Ta alloy : effects of anodization time, strain hardening, and crystallographic texture
Leonardo Fantont, Alessandra Cremasco, Mariana G. Mello, Rubens Caram
Anodization growth of TiO2 nanotubes on Ti-35Nb-7Zr-5Ta alloy : effects of anodization time, strain hardening, and crystallographic texture
Leonardo Fantont, Alessandra Cremasco, Mariana G. Mello, Rubens Caram
Fontes
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Journal of materials science Vol. 54, no. 21 (Nov., 2019), p. 13724-13739 |