Antimicrobial property, cytocompatibility and corrosion resistance of Zn-doped ZrO^sub 2^/TiO^sub 2^ coatings on Ti6Al4V implants

Zn-doped ZrO2/TiO2 porous coatings (Zn-ZrO2/TiO2) were prepared on the surface of titanium alloy (Ti6Al4V) by a hybrid approach of magnetron sputtering and micro-arc oxidation (MAO). The microstructures, phase constituents and elemental states of the coating were investigated by scanning electron mi...

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Published in:Materials Science & Engineering. C, Biomimetic Materials, Sensors and Systems Biomimetic Materials, Sensors and Systems, 2017-06, Vol.75, p.7
Main Authors: Wang, Ruoyun, He, Xiaojing, Gao, Yuee, Zhang, Xiangyu, Yao, Xiaohong, Tang, Bin
Format: Article
Language:English
Subjects:
Amine oxidase (flavin-containing)
Biocompatibility
Biomedical materials
Body fluids
Coatings
Corrosion
Corrosion resistance
Diffraction
In vitro methods and tests
Magnetron sputtering
Materials science
Oxidation
Photoelectron spectroscopy
Protective coatings
Spectroscopy
Surgical implants
Titanium alloys
Titanium base alloys
Titanium dioxide
X ray photoelectron spectroscopy
X-ray diffraction
Zinc
Zinc coatings
Zinc oxide
Zirconium dioxide
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Summary:Zn-doped ZrO2/TiO2 porous coatings (Zn-ZrO2/TiO2) were prepared on the surface of titanium alloy (Ti6Al4V) by a hybrid approach of magnetron sputtering and micro-arc oxidation (MAO). The microstructures, phase constituents and elemental states of the coating were investigated by scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results demonstrate that the Zn-ZrO2/TiO2 coatings are porous and its thickness is approximately 13 µm. The major phases in the oxidation coating are tetragonal ZrO2 (t-ZrO2), cubic ZrO2 (c-ZrO2) and rutile TiO2. XPS result reveals that Zn exists as ZnO in the Zn-ZrO2/TiO2 coatings. The biological experiments indicate that Zn-ZrO2/TiO2 coatings exhibit not only excellent antibacterial property against Gram-positive Staphylococcus aureus (S. aureus), but also favorable cytocompatibility. In addition, the corrosion resistance of the coating is also appreciably improved in the simulated body fluids (SBF), which can ensure better biocompatibility in body fluids.
ISSN:0928-4931
1873-0191