In this work composite coatings on 316L stainless steel substrates was utilized by using cathodic electrophoretic deposition (E.P.D.) to fabricate yttria stabilized zirconia -chitosan- hydroxyapatite with different percentage of the addition of chitosan to the hydroxyapatite suspensions. The microstructure and phases of coatings were investigated by using scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS). The roughness, bonding, bone bioactivity of the coatings, antibacterial test and cell culture were also studied. The results show that the uniform -ability of deposit composition can be changed by a variation of the hydroxyapatite concentration in the solutions, the time and voltages used for deposition. The coatings are more uniform, packed and non-cracked at 30Vand 5min with best adhesions with substrate. . The phases of the system, which are found observed, were the phases of YPSZ and HA without any other crystalline phases. The formation of bone-like apatite layer on the coated implant in SBF confirms the ability of EPD to enhance the structure and morphology of the coatings. Cell viability results thus testify the high biocompatibility of the implants and improvement in the antibacterial ability.
Key words: Bioactivity, Antibacterial, 316LStainless Steel, Electrophoretic Deposition Coating
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