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dc.contributor.authorEscada, A. L A-
dc.contributor.authorMachado, J. P B-
dc.contributor.authorNakazato, Roberto Zenhei-
dc.contributor.authorAlves Claro, A. P R-
dc.identifier.citationDefect and Diffusion Forum, v. 334-335, p. 297-302.-
dc.description.abstractTitanium and its alloys are widely used as biomaterials due to their mechanical, chemical and biological properties. To enhance the biocompatibility of titanium alloys, various surface treatments have been proposed. In particular, the formation of titanium oxide nanotubes layers has been extensively examined. Among the various materials for implants, calcium phosphates and hydroxyapatite are widely used clinically. In this work, titanium nanotubes were fabricated on the surface of Ti-7.5Mo alloy by anodization. The samples were anodized for 20 V in an electrolyte containing glycerol in combination with ammonium fluoride (NH4F, 0.25%), and the anodization time was 24 h. After being anodized, specimens were heat treated at 450 °C and 600°C for 1 h to crystallize the amorphous TiO2 nanotubes and then treated with NaOH solution to make them bioactive, to induce growth of calcium phosphate in a simulated body fluid. Surface morphology and coating chemistry were obtained respectively using, field-emission scanning electron microscopy (FEG-SEM), AFM and X-ray diffraction (XRD). It was shown that the presence of titanium nanotubes induces the growth of a sodium titanate nanolayer. During the subsequent invitro immersion in a simulated body fluid, the sodium titanate nanolayer induced the nucleation and growth of nano-dimensioned calcium phosphate. It was possible to observe the formation of TiO2 nanotubes on the surface of Ti-7.5Mo. Calcium phosphate coating was greater in the samples with larger nanotube diameter. These findings represent a simple surface treatment for Ti-7.5Mo alloy that has high potential for biomedical applications. © (2013) Trans Tech Publications, Switzerland.en
dc.subjectCalcium phosphate-
dc.subjectNanotubes TiO2-
dc.subjectTitanium alloys-
dc.subjectBiomedical applications-
dc.subjectChemical and biologicals-
dc.subjectField emission scanning electron microscopy-
dc.subjectNanotube diameters-
dc.subjectNanotubes tio-
dc.subjectNucleation and growth-
dc.subjectSimulated body fluids-
dc.subjectTitanium oxide nanotubes-
dc.subjectAnodic oxidation-
dc.subjectBiological materials-
dc.subjectDiffusion in liquids-
dc.subjectDiffusion in solids-
dc.subjectMedical applications-
dc.subjectMolybdenum alloys-
dc.subjectPhosphate coatings-
dc.subjectSurface treatment-
dc.subjectTitanium compounds-
dc.subjectTitanium oxides-
dc.subjectX ray diffraction-
dc.titleGrowth of calcium phosphate coating on Ti-7.5Mo alloy after anodic oxidationen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionLaboratory of Sensors and Materials - LAS-
dc.description.affiliationDepartment of Materials Faculty of Engineering Guaratinguetá São Paulo State University- UNESP, Av. Dr. Ariberto Pereira da Cunha, 333, Pedregulho, CEP 12.516-410, Guaratinguetá, SP-
dc.description.affiliationNational Institute for Space Research - INPE Laboratory of Sensors and Materials - LAS, Av. dos Astronautas, 1758, Jd. Granja, CEP: 12227-010 São José dos Campos, SP-
dc.description.affiliationUnespDepartment of Materials Faculty of Engineering Guaratinguetá São Paulo State University- UNESP, Av. Dr. Ariberto Pereira da Cunha, 333, Pedregulho, CEP 12.516-410, Guaratinguetá, SP-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofDefect and Diffusion Forum-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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