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Rajabi, F., Zarei-Hanzaki, A., Abedi, H. R., Safdel, A. & Bertrand, E. (2021) Comparing the mechanical properties, microstructure, texture and in-vitro degradation behavior of TNTZ/nano-fluorapatite composite and TNTZ bioalloy. Journal of the Mechanical Behavior of Biomedical Materials, 117 104402.
Added by: Richard Baschera (2021-04-22 12:42:43) Last edited by: Richard Baschera (2021-04-22 12:58:20) |
| Type de référence: Article DOI: 10.1016/j.jmbbm.2021.104402 Numéro d'identification (ISBN etc.): 1751-6161 Clé BibTeX: Rajabi2021 Voir tous les détails bibliographiques  |
Catégories: ID2M, INTERNATIONAL Mots-clés: biocompatibility, Corrosion resistance, Friction stir processing, microstructure, nanocomposite, Titanium alloy Créateurs: Abedi, Bertrand, Rajabi, Safdel, Zarei-Hanzaki Collection: Journal of the Mechanical Behavior of Biomedical Materials |
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| Liens URLs https://www.scienc ... /S1751616121000916 |
| Résumé |
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The present study deals with (i) the fabrication of the composite surface layer of Ti–29Nb–13Ta-4.6Zr/nano-fluorapatite through friction stir processing, (ii) clarifying the correlation of microstructure and texture with in-vitro degradation behavior and bioactivity of fabricated nano-biocomposite, and (iii) comparing the mechanical and functional properties of nano composite whit those obtained for TNTZ bio-alloy. The results indicated that increasing the number of deformation passes effectively refines the microstructure, leading to the average grain sizes of less than 5 μm. The texture of the material was also evolved in the presence of the nano particles where the grains reorient along <111> direction in contrast to the <101>-oriented grains in the starting microstructure. In-vitro bioactivity of the processed samples was measured after being immersed in simulated body fluid solution for various duration up to 30 days. Enhanced corrosion resistance and bio-mineralization of nanocomposite surface layer was discussed relying on the occurrence of grain refinement, substructure development and evolution of texture components along <101> direction. Assessment of the mechanical properties of the fabricated composites and as-received material also indicated the positive effect of the applied processing route and the presence of nano particles.
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