Laser-Deposited Beta Type Ti-42Nb Alloy with Anisotropic Mechanical Properties for Pioneering Biomedical Implants with a Very Low Elastic Modulus
Por:
Arias-González F, Rodríguez-Contreras A, Punset M, Manero JM, Barro Ó, Fernández-Arias M, Lusquiños F, Gil J and Pou J
Publicada:
1 oct 2022
Ahead of Print:
14 oct 2022
Resumen:
Present commercial titanium alloy implants have an elastic modulus higher than 100 GPa, whereas that of the cortical bone is much smaller (17-28 GPa). This elastic modulus mismatch produces a stress shielding effect and the resorption of the bone surrounding the implant. In the present work, a fiber texture is developed in beta type Ti-42Nb (wt%) alloy ingots generated by laser-directed energy deposition (LDED) in order to achieve anisotropic mechanical properties. In addition, we demonstrate that laser-deposited beta type Ti-42Nb alloy ingots with an intense fiber texture exhibit a very low elastic modulus in the building direction (E-z < 50 GPa) and high yield (sigma(0.2z) > 700 MPa) and tensile (UTSz > 700 MPa) strengths. Laser-deposited Ti-42Nb alloy enhances the osteoinductive effect, promoting the adhesion, proliferation, and spreading of human osteoblast-like cells. Hence, we propose that laser-deposited beta type Ti-42Nb alloy is a potentially promising candidate for the manufacturing of pioneering biomedical implants with a very low elastic modulus that can suppress stress shielding.
Filiaciones:
Arias-González F:
LaserOn Research Group, CINTECX, School of Engineering, Universidade de Vigo (UVIGO), Lagoas Marcosende, 36310 Vigo, Spain
Rodríguez-Contreras A:
Biomaterials, Biomechanics and Tissue Engineering Group, Materials Science and Engineering Department, and Research Center for Biomedical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
Institut de Recerca Sant Joan de Déu (IRSJD), 08034 Barcelona, Spain
Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
Punset M:
Biomaterials, Biomechanics and Tissue Engineering Group, Materials Science and Engineering Department, and Research Center for Biomedical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
Institut de Recerca Sant Joan de Déu (IRSJD), 08034 Barcelona, Spain
Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
UPC Innovation and Technology Center (CIT-UPC), Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, Spain
Manero JM:
Biomaterials, Biomechanics and Tissue Engineering Group, Materials Science and Engineering Department, and Research Center for Biomedical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
Institut de Recerca Sant Joan de Déu (IRSJD), 08034 Barcelona, Spain
Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
Barro Ó:
LaserOn Research Group, CINTECX, School of Engineering, Universidade de Vigo (UVIGO), Lagoas Marcosende, 36310 Vigo, Spain
Fernández-Arias M:
LaserOn Research Group, CINTECX, School of Engineering, Universidade de Vigo (UVIGO), Lagoas Marcosende, 36310 Vigo, Spain
Lusquiños F:
LaserOn Research Group, CINTECX, School of Engineering, Universidade de Vigo (UVIGO), Lagoas Marcosende, 36310 Vigo, Spain
Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36312 Vigo, Spain
Gil J:
School of Dentistry, Universitat Internacional de Catalunya (UIC), 08195 Sant Cugat del Vallès, Spain
Pou J:
LaserOn Research Group, CINTECX, School of Engineering, Universidade de Vigo (UVIGO), Lagoas Marcosende, 36310 Vigo, Spain
Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36312 Vigo, Spain
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