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Surface modification of titanium alloys for biomedical applications


The objective of the present work is surface modification of titanium alloys using growth of nanotubes prepared by anodic oxidation. This multidisciplinary proposal is innovative and it applies the research developed for our group in the last years since project (2007/00059-4) was approved. Ti-30Ta and Ti-7.5Mo experimental alloys will be obtained from C.P. titanium, molybdenum and tantalum by using an arc-melting furnace. Ingots will be submitted to heat treatment and they will be cold worked by swaging. Followed, they would be cold rolled and sheets of 2mm of thickness will be obtained. Prior anodization, the samples will be cleaned with acetone followed by a deionized water rinse. The anodization will be realized using two types of electrolyte: HF, H2SO4 plus dimethyl sulfoxide and NH4F plus glycerol, for Ti-30Ta and Ti-7.5Mo respectively. Anodization parameters, such as voltage and immersion time, will be evaluated to find the optimum anodizing conditions to achieve optimal arrays of nanotubes. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ESCADA, A. L. A.; NAKAZATO, R. Z.; CLARO, A. P. R. ALVES. Growth of TiO2 Nanotubes by Anodization of Ti-7.5Mo in NH4F Solutions. NANOSCIENCE AND NANOTECHNOLOGY LETTERS, v. 5, n. 4, SI, p. 510-512, APR 2013. Web of Science Citations: 5.
ESCADA, A. L. A.; MACHADO, J. P. B.; SCHNEIDER, S. G.; NAKAZATO, ROBERTO ZENHEI; CLARO, A. P. R. ALVES. Growth of Calcium Phosphate Using Chemically Treated Titanium Oxide Nanotubes. Journal of Nano Research, v. 16, p. 63-68, 2011. Web of Science Citations: 1.

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