View in EDS

Coupling sol-gel with electrospray deposition: Towards nanotextured bioactive glass coatings.

Saved in:
Bibliographic Details
Title: Coupling sol-gel with electrospray deposition: Towards nanotextured bioactive glass coatings.
Authors: Müller, V.1 (AUTHOR), Jobbagy, M.2 (AUTHOR), Djurado, E.1 (AUTHOR) elisabeth.djurado@lepmi.grenoble-inp.fr
Source: Journal of the European Ceramic Society. Nov2021, Vol. 41 Issue 14, p7288-7300. 13p.
Subjects: Bioactive glasses, Glass coatings, Electrostatic atomization, Surface coatings, Sol-gel processes, Body fluids
Abstract: • Si-based bioactive glass coatings fabricated by coupling sol-gel and electrospray. • Compositional optimization of S85, S75, and S58 coatings on Ti6Al4V substrate. • Microstructural tunning of homogeneous BG coatings as a function of ESD parameters. • From very porous coral-type coating morphology to a more compacted cauliflower one. • In-vitro investigation after 24 h immersion in simulated body fluid. For the first time, the sol-gel method was coupled with electrostatic spray deposition (ESD) to fabricate nanotextured bioactive glass (BG) coatings with a controlled microstructure in a one-pot-process. Three BG compositions belonging to the SiO 2 -CaO-P 2 O 5 system (S85, S75, and S58) were homogeneously deposited on metallic Ti6Al4V substrates starting from the atomization of precursor solutions. All coatings displayed an amorphous character, as confirmed by XRD. A wide variety of innovative BG morphologies were obtained, tuning the key parameters of ESD, leading from highly porous coral-like to compact reticular-type coatings. The bioactivity, in terms of apatite formation, of as-deposited coatings was tested by immersion in simulated body fluid solution. Textural properties were found to play an important impact in its biological performance. Highly porous ESD-coatings exhibited remarkable bioactivity for S75 and S58 compositions, compared with more compacted ones of equal formulations. S85 composition was found extremely reactive regardless of the coating microstructure. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the European Ceramic Society is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:• Si-based bioactive glass coatings fabricated by coupling sol-gel and electrospray. • Compositional optimization of S85, S75, and S58 coatings on Ti6Al4V substrate. • Microstructural tunning of homogeneous BG coatings as a function of ESD parameters. • From very porous coral-type coating morphology to a more compacted cauliflower one. • In-vitro investigation after 24 h immersion in simulated body fluid. For the first time, the sol-gel method was coupled with electrostatic spray deposition (ESD) to fabricate nanotextured bioactive glass (BG) coatings with a controlled microstructure in a one-pot-process. Three BG compositions belonging to the SiO 2 -CaO-P 2 O 5 system (S85, S75, and S58) were homogeneously deposited on metallic Ti6Al4V substrates starting from the atomization of precursor solutions. All coatings displayed an amorphous character, as confirmed by XRD. A wide variety of innovative BG morphologies were obtained, tuning the key parameters of ESD, leading from highly porous coral-like to compact reticular-type coatings. The bioactivity, in terms of apatite formation, of as-deposited coatings was tested by immersion in simulated body fluid solution. Textural properties were found to play an important impact in its biological performance. Highly porous ESD-coatings exhibited remarkable bioactivity for S75 and S58 compositions, compared with more compacted ones of equal formulations. S85 composition was found extremely reactive regardless of the coating microstructure. [ABSTRACT FROM AUTHOR]
ISSN:09552219
DOI:10.1016/j.jeurceramsoc.2021.07.041