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Electrochemical and biological characterization HA/Al2 O3 -YSZ nano-composite coatings using electrophoretic process
Nayereh Askari1, Mardali Yousefpour1, Masoud Rajabi2
1Faculty of Materials and metallurgical Engineering, Semnan University, Semnan, Iran.
Abstract:
In this research work, hydroxyapatite/alumina/YSZ bio nanocomposite coatings on titanium substrate were created by electrophoretic deposition (EPD) and reaction bonding process. By using the EPD process, uniform green form coatings containing HA, yttria-stabilized zirconia (YSZ), and aluminum particles were produced on titanium. After oxidation of aluminum at 660°C and sintering at 850°C, a dense and adherent HA/Al2 O3 /YSZ coating was produced. Scanning electron microscopy, X-ray diffractometric and mechanical tests were employed to investigate the morphologies, compositions, hardness, toughness and bonding strength of the coatings. The corrosion studies and cell culturing experiment were carried out and the results show that the HA/YSZ/Al2 O3 coatings are more bioactive and more resistance to corrosion than HA coatings. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1916-1922, 2018.
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