1. School of Information and Engineering, Hebei North University, Zhangjiakou 075000, China 2. College of Lab Medicine, Hebei North University, Zhangjiakou 075000, China 3. Key Laboratory of Bio-Electromagnetic and Bio-Electronic Technology, University of Electronic Science and Technology of China, Chengdu 610054, China 4. International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China
Abstract：Titanium and titanium alloys have been widely used as orthopedic, dental implants and cardiovascular stents owing to their superior physical properties. However, titanium surface is inherently bio-inert, thus could not form efficient osseointegration with surrounding bone tissue. Therefore, to improve the surface property of titanium implant is significantly important in clinical application. Manganese and fluorine co-doped hydroxyapatite (FMnHAP) coatings were prepared on titanium substrate by electrochemical deposition technique. The as-prepared coatings were examined by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) tests. The results indicated that the FMnHAP coatings take the morphology of nanoscale-villous-like，the composite coating becomes more compact. The FTIR test indicated that the symmetry of bending vibration modes of hydroxyl changed，simulated body fluid immersion test proved that the FMnHAP coatings had induce carbonate-apatite formation, indicating that the composite coating possess excellent biocompatibility. In the electrochemical corrosion testing, the FMnHAP coatings showed stronger corrosion resistance than pure Ti.
Key words：Single current step deposition;Manganese and fluorine co-doped hydroxyapatite;Composite coating;Fourier transform infrared spectroscopy
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