abstract
Atomic/molecular layer deposition (ALD/MLD) is ideally suited for addressing the challenges faced by the new generation biomedical technologies through surface and interface modification with organic-inorganic hybrid coatings, which are emerging as an alternative to inorganic coatings. In this study, we present a feasible strategy for modifying the surface of magnesium alloy (AZ31) screw-like substrates with titanium-based hybrid coatings, using titanium tetraisopropoxide as the metal-bearing precursor, and a simple aliphatic bi-functional alcohol, such as ethylene glycol, as the organic precursor. Results demonstrated that the titanium-based hybrid coating was evenly distributed without obvious defects on the AZ31 screw-like substrates while providing physical protection. In addition, the cytocompatibility of the titanium-based hybrid coating was validated through the cytotoxicity assay, revealing its potential for future biomedical applications.
keywords
ATOMIC LAYER DEPOSITION; MAGNESIUM ALLOY AZ31; CORROSION-RESISTANCE; THIN-FILMS; SURFACE; TIO2; ANATASE; DESIGN
subject category
Chemistry
authors
Silva, RM; Oliveira, FJ; Lima, MF; Silva, NA; Miranda, G
our authors
Filipe José Alves de Oliveira
Principal Researcher
Georgina Miranda
Associate Professor with Habilitation
Ricardo Manuel Fonseca Lopes da Silva
Laboratory OfficerProjects
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MCTES (PIDDAC). The authors acknowledge R. Soares, M. Ferro and A. V. Gir & atilde;o for assistance with the XRR/GIXRD and SEM/STEM/HRTEM measurements, respectively. A. J. S. Fernandes is acknowledged for the Raman measurements. This work has also been funded by the Portuguese Foundation for Science and Technology (FCT) through the projects UIDB/50026/2020 (https://doi.org/10.54499/UIDB/50026/2020), UIDP/50026/2020 (https://doi.org/10.54499/UIDP/50026/2020) and LA/P/0050/2020 (https://doi.org/10.54499/LA/P/0050/2020), and through the Scientific Employment Stimulus to NAS (2023.09247.CEECIND).