Textured TNZT surfaces via hydrothermal treatments for bone implant applications
| Autor: | Marcus L. Young, Jesse Smith, E. Blackert, Said Bakkar, M. Kramer, Matthew Carl, S. Briseño-Murguia, Samir Aouadi, Joshua D. Barclay |
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| Rok vydání: | 2018 |
| Předmět: |
Nanostructure
Materials science Biocompatibility Scanning electron microscope Alloy Metals and Alloys Oxide 02 engineering and technology Surfaces and Interfaces engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Osseointegration 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Sodium hydroxide Materials Chemistry engineering Composite material 0210 nano-technology Porosity |
| Zdroj: | Thin Solid Films. 667:64-68 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2018.07.055 |
| Popis: | TNZT alloys such as Ti-35Nb-7Zr-5Ta exhibit better biocompatibility than the more widely used Ti-6Al-4V alloy. Furthermore, TNZT alloys typically have lower Young's moduli (50–60 GPa) than most Ti-based alloys. A low modulus allows for a greater transfer of functional loads since it is much closer to the modulus of bone, which ultimately leads to more growth and support from natural bone. TNZT alloys were produced by vacuum arc melting of pure elements that were subsequently rolled to sheet. Oxide nano-scaffolds were grown on TNZT samples using a hydrothermal treatment in 40 mL sodium hydroxide solution at 60 °C using either 0.5 or 5.0 M concentrations, with and without TiO2 nanoparticles, for either 24 or 48 h to create nanostructured surfaces to help improve osseointegration. The alloys with and without nano-scaffolds were characterized using top-view and cross-sectional scanning electron microscopy equipped with an energy dispersive x-ray spectrometer to investigate the structure, morphology, and chemistry of the resulting nanostructures. Nano-scaffolds were found to grow for a sodium hydroxide concentration of 5.0 M regardless of the treatment time (24 to 48 h). A pore size of 60 nm and 80 nm were observed for samples treated for 24 and 48 h, respectively. No porous structures were observed for samples produced for a sodium hydroxide solution of 0.5 M or with TiO2 nanoparticles. |
| Databáze: | OpenAIRE |
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