Abstract
The chemical resistance of plasma-sprayed hydroxyapatite (HA) coatings on titanium substrates was successfully improved by fluoroalkylsilane (FAS), that is, 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FAS17) self-assembled monolayers (SAMs) formed through chemical vapor deposition. FAS17-SAMs were formed on the topmost HA layer of HA/Ti composite coatings prepared with rf input powers of 12, 17 or 27 kW. Each sample was immersed in a pH 6 buffer solution and its solubility investigated by an ion chromatography. All of the FAS17-coated samples became very hydrophobic with contact angles of more than 130°. The total amount of Ca 2+ ions released from the FAS17-coated HA surface decreased in comparison with the samples not coated with FAS17. In addition, the amount of Ca 2+ ions released was significantly influenced by the base HA coatings. Scanning electron microscopic observation showed less damage on the FAS17-coated surfaces even after 12 weeks’ immersion in the acidic solution, demonstrating that the effectively protected the underlying HA layer.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
