Interfacial study of magnesium-containing fluoridated hydroxyapatite coatings |
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| Authors: | Yanli CaiSam Zhang Xianting ZengMin Qian Deen SunWenjian Weng |
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| Affiliation: | a School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singaporeb Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore 638075, Singaporec PVD Department Plating Division, Singapore Epson Industrial Pte Ltd, 86 & 88, Second Lok Yang Rd Jurong, Singapore 628162, Singapored Department of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, PR China |
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| Abstract: | Magnesium-containing fluoridated hydroxyapatite (MgxFHA) coatings have been developed to improve the biological performances of fluoridated hydroxyapatite (FHA) coatings. The coatings are deposited on Ti6Al4V substrates via a sol-gel process. The interface between the coating and substrate is characterized by scanning electron microscopy, glow discharge optical emission spectroscopy and X-ray photoelectron spectroscopy for coating thickness, elemental distribution and chemical states. Pull-off test is used to evaluate the adhesion strength. The results show that the interdiffusion of elements happens at the coating/substrate interface. The incorporation of Mg ions into FHA coatings enhances the pull-off adhesion strength between the coating and the substrate, but no significant difference is observed with different Mg concentrations. |
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| Keywords: | Magnesium Sol-gel Interface Pull-off adhesion strength |
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