Abstract—Titania-based coatings on commercially pure titanium (CP-Ti) were formed by micro-arc oxidation in different electrolyte solutions containing anions such as phosphate ( PO4
3-) and silicate ( SiO3
2-). The surface topography, phases, and elemental compositions of the P-TiO2 and Si-TiO2 coatings were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), and X-ray diffraction (XRD), respectively. Staphylococcus aureus (S. aureus) was used to evaluate the antibacterial properties of the MAO coatings. The experimental results demonstrate that The P-TiO2 coated sample had amorphous phase, main anatase-TiO2, and a small amount of P2O5. However, the Si-TiO2 coated samples were composed of SiO2, anatase-TiO2, and amorphous phase. After 24 h of incubation, the antibacterial activities against S. aureus were 96.4% for the P-TiO2 coated sample and 98.6 % for the Si-TiO2 coated sample.
Index Terms—Commercially pure titanium, micro arc oxidation, corrosion, antibacterial property.
L. C. Tsao is with the Department of Materials Science and Engineering, National Pingtung University of Science and Technology, Pingtung, 91201Taiwan (e-mail: tlclung@mail.npust.edu.tw).
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Cite: L. C. Tsao, "Effects of Different Electrolytes on Microstructure and Antibacterial Properties of Microarc Oxidized Coatings of CP-Ti," International Journal of Materials, Mechanics and Manufacturing vol. 8, no. 2, pp. 34-39, 2020.
Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (
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