Optimization of Anodization Parameters in Ti-30Ta Alloy
Patricia Capellato,
Daniela Sachs,
Lucas V. B. Vasconcelos,
Miriam M. Melo,
Gilbert Silva,
Maria G. A. Ranieri,
Cecilia A. de C. Zavaglia,
Roberto Z. Nakazato,
Ana P. R. Alves Claro
Affiliations
Patricia Capellato
Institute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, 37500-903 Minas Gerais, Brazil
Daniela Sachs
Institute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, 37500-903 Minas Gerais, Brazil
Lucas V. B. Vasconcelos
Institute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, 37500-903 Minas Gerais, Brazil
Miriam M. Melo
Institute of Mechanical Engineering, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, 37500-903 Minas Gerais, Brazil
Gilbert Silva
Institute of Mechanical Engineering, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, 37500-903 Minas Gerais, Brazil
Maria G. A. Ranieri
Institute of Production Engineering and Management, Development, Technology and Society Program (DTEcS), Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, 37500-903 Minas Gerais, Brazil
Cecilia A. de C. Zavaglia
Faculty of Mechanical Engineering, Unicamp-State University of Campinas, Rua Mendeleyev, 200, Campinas, 13083-860 São Paulo, Brazil
Roberto Z. Nakazato
Department of Chemistry and Energy, School of Engineering, Unesp-São Paulo State University, Av. Ariberto Pereira da Cunha, 333, Guaratinguetá, 12516-410 São Paulo, Brazil
Ana P. R. Alves Claro
Materials and Technology Department, School of Engineering, Unesp-São Paulo State University, Av. Ariberto Pereira da Cunha, 333, Guaratinguetá, 12516-410 São Paulo, Brazil
The current metallic biomaterial still presents failures associated with the bulk alloy and the interface of material/human body. In previous studies, titanium alloy with tantalum showed the elastic modulus decrease in comparison with that of commercially pure (cp) titanium. In this study, surface modification on Ti-30Ta alloy was investigated. Titanium and tantalum were melted, homogenized, cold-worked by a rotary swaging process and solubilized. The anodization process was performed in electrolyte contained glycerol + NH4F 0.25% at 30 V using seven different durations—4 h, 5 h, 6 h, 7 h, 8 h, 9 h, and 10 h and annealed at 530 °C for 1 h. The surface topography was characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) measurements, X-ray diffraction analysis (XRD), and contact angle. From the results, we conclude the time of anodization process influences the shape and morphology of the anodized layer. The 5 h-anodization process produced a smooth and porous surface. The 4-, 6-, 7-, 8-, 9-, and 10-h conditions showed nanotubes morphology. All surfaces are hydrophilic (<90°). Likewise, all the investigated conditions present anatase phase. So, this surface modification presents potential for biomedical application. However, more work needs to be done to better understand the influence of time on the anodization process.
