Abstract
Ferroelectric BaTiO3 thin films were coated on titanium implants using an electrostatic spraying deposition method to combine the biocompatibility of a ceramic with the high mechanical strength of a metal. As-deposited films were annealed at 850°C for 30min in argon. Crystallinity, chemical structure, and surface morphology of the films were analyzed. Perovskite-type tetragonal BaTiO3 films were obtained after post-annealing. Their ability to form calcium phosphate after poling treatments at above the Curie temperature was investigated with an in-vitro test in a simulated body fluid. Un-poled BaTiO3 layer on titanium implant was partially covered with Na, Cl, and relatively small amounts of P and O ions, while the poled BaTiO3 layer was wholly covered with calcium phosphate.
Published Version
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