Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy
With little success, researchers has been searching for alloys with elements such as tantalum to improve the long-term life of implants. The Ti–30Ta alloy presents an elastic modulus E = 69 GPa that is close to that of bone (E = 17–25 GPa) than Ti cp (E = 105 GPa). In addition, nanostructure surface...
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MDPI AG
2020-08-01
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| Online Access: | https://www.mdpi.com/2075-4701/10/8/1106 |
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| author | Patricia Capellato Daniela Sachs Filipe Bueno Vilela Mirian M. Melo Gilbert Silva Geovani Rodrigues Cecilia A. de C. Zavaglia Roberto Z. Nakazato Ana Paula R. A. Claro |
| author_facet | Patricia Capellato Daniela Sachs Filipe Bueno Vilela Mirian M. Melo Gilbert Silva Geovani Rodrigues Cecilia A. de C. Zavaglia Roberto Z. Nakazato Ana Paula R. A. Claro |
| author_sort | Patricia Capellato |
| collection | DOAJ |
| description | With little success, researchers has been searching for alloys with elements such as tantalum to improve the long-term life of implants. The Ti–30Ta alloy presents an elastic modulus E = 69 GPa that is close to that of bone (E = 17–25 GPa) than Ti cp (E = 105 GPa). In addition, nanostructure surface modification influences cell behavior and antimicrobial activity. So, this study investigates the corrosion behavior of surface modification by TiO<sub>2</sub> nanotube grown on Ti–30Ta alloy after anodization process in the electrolyte glycerol + NH<sub>4</sub>F 0.25% at 30 V, for nine hours without annealing and annealed in 450 °C, 530 °C and 600 °C (5 °C/min). The electrochemical behavior was evaluated by three electrodes cell. The counter-electrode of graphite, reference-electrode of saturated calomel electrode and working-electrode at electrolyte of 0.15 M NaCl + 0.03 M NaF, with pH = 6 for 8000 s. The scanned region ranged from −0.8 V to values up to 3.5 V with a sweep rate 0.166 mV/s. Potentiodynamic polarization curves were obtained with a potentiostat. The sample was characterized by scanning electron microscopy (SEM) imaging, X-ray diffraction analysis (XRD) and wettability with a contact angle goniometer. We concludes from the obtained results that all treatment surfaces are hydrophilic (<90°). The surface covered with TiO<sub>2</sub> nanotube crystallinity showed anatase phase after annealing at 450 °C, 530 °C and 600 °C; the exceptions were the anodized-without-annealing treatment and without-surface-modification alloys. The electrochemical behavior of the five groups investigated showed similar high resistance to corrosion solution under all conditions. |
| first_indexed | 2024-03-10T17:17:43Z |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T17:17:43Z |
| publishDate | 2020-08-01 |
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| spelling | doaj.art-ed5f528130a243309b5071b9d87f52b12023-11-20T10:27:35ZengMDPI AGMetals2075-47012020-08-01108110610.3390/met10081106Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta AlloyPatricia Capellato0Daniela Sachs1Filipe Bueno Vilela2Mirian M. Melo3Gilbert Silva4Geovani Rodrigues5Cecilia A. de C. Zavaglia6Roberto Z. Nakazato7Ana Paula R. A. Claro8Institute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, MG CEP-37500 903, BrazilInstitute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, MG CEP-37500 903, BrazilInstitute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, MG CEP-37500 903, BrazilInstitute of Mechanical Engineering, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, MG CEP-37500 903, BrazilInstitute of Mechanical Engineering, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, MG CEP-37500 903, BrazilInstitute of Mechanical Engineering, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá, MG CEP-37500 903, BrazilFaculty of Mechanical Engineering, Unicamp-State University of Campinas, Rua Mendeleyev, 200, Campinas, São Paulo CEP 13083-860, BrazilDepartment of Chemical and Energy, Unesp-São Paulo State University, Av. Ariberto Pereira da Cunha, 333, Guaratinguetá, SP CEP 12516-410, BrazilDepartment of Chemical and Energy, Unesp-São Paulo State University, Av. Ariberto Pereira da Cunha, 333, Guaratinguetá, SP CEP 12516-410, BrazilWith little success, researchers has been searching for alloys with elements such as tantalum to improve the long-term life of implants. The Ti–30Ta alloy presents an elastic modulus E = 69 GPa that is close to that of bone (E = 17–25 GPa) than Ti cp (E = 105 GPa). In addition, nanostructure surface modification influences cell behavior and antimicrobial activity. So, this study investigates the corrosion behavior of surface modification by TiO<sub>2</sub> nanotube grown on Ti–30Ta alloy after anodization process in the electrolyte glycerol + NH<sub>4</sub>F 0.25% at 30 V, for nine hours without annealing and annealed in 450 °C, 530 °C and 600 °C (5 °C/min). The electrochemical behavior was evaluated by three electrodes cell. The counter-electrode of graphite, reference-electrode of saturated calomel electrode and working-electrode at electrolyte of 0.15 M NaCl + 0.03 M NaF, with pH = 6 for 8000 s. The scanned region ranged from −0.8 V to values up to 3.5 V with a sweep rate 0.166 mV/s. Potentiodynamic polarization curves were obtained with a potentiostat. The sample was characterized by scanning electron microscopy (SEM) imaging, X-ray diffraction analysis (XRD) and wettability with a contact angle goniometer. We concludes from the obtained results that all treatment surfaces are hydrophilic (<90°). The surface covered with TiO<sub>2</sub> nanotube crystallinity showed anatase phase after annealing at 450 °C, 530 °C and 600 °C; the exceptions were the anodized-without-annealing treatment and without-surface-modification alloys. The electrochemical behavior of the five groups investigated showed similar high resistance to corrosion solution under all conditions.https://www.mdpi.com/2075-4701/10/8/1106Ti–30Ta alloyTiO<sub>2</sub> nanotubecorrosion resistanceannealing temperature |
| spellingShingle | Patricia Capellato Daniela Sachs Filipe Bueno Vilela Mirian M. Melo Gilbert Silva Geovani Rodrigues Cecilia A. de C. Zavaglia Roberto Z. Nakazato Ana Paula R. A. Claro Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy Metals Ti–30Ta alloy TiO<sub>2</sub> nanotube corrosion resistance annealing temperature |
| title | Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy |
| title_full | Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy |
| title_fullStr | Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy |
| title_full_unstemmed | Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy |
| title_short | Influence of Annealing Temperature on Corrosion Resistance of TiO<sub>2</sub> Nanotubes Grown on Ti–30Ta Alloy |
| title_sort | influence of annealing temperature on corrosion resistance of tio sub 2 sub nanotubes grown on ti 30ta alloy |
| topic | Ti–30Ta alloy TiO<sub>2</sub> nanotube corrosion resistance annealing temperature |
| url | https://www.mdpi.com/2075-4701/10/8/1106 |
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