Incorporation of ZnO–ZrO2 nanoparticles into TiO2 coatings obtained by PEO on Ti–6Al–4V substrate and evaluation of its corrosion behavior, microstructural and antibacterial effects exposed to SBF solution. Issue 23 (1st December 2021)

• Record Type: Journal Article
• Authors: Nadimi, M.; Dehghanian, C.
• Is Part Of: Ceramics international. Volume 47:Issue 23(2021)
• Page Start: 33413
• Page End: 33425
• Publication Date: 2021-12-01
• Subjects: Titanium alloy -- ZnO/ZrO2 nanoparticles -- PEO -- Corrosion -- Antibacterial performance and wettability; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.08.248
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this research, Plasma Electrolytic Oxidation technique was used to incorporate ZnO–ZrO2 nanoparticles into TiO2 ceramic coating on Ti6–Al–4V using sodium phosphate as an electrolyte. The effect of adding these nanoparticles on corrosion, morphology, wettability and antibacterial properties in the simulated body fluid (SBF) solution was investigated. The results indicated nanoparticles modified the microstructure of coating, which increased corrosion resistance 12 times higher than that of substrate. Besides, ZrO2 nanoparticles had the most significant effect on increasing the contact angle. In addition, due to the compatibility of zirconium and zinc oxides with human body environment, the antibacterial properties of coatings were significantly improved. Highlights: Anatase and rutile phases can attack bacterial cell and DNA barriers using reactive oxygen species. ZrO2 nanoparticles had the most effect on surface roughness in the PEO coating. ZnO nanoparticles had the greatest impact on improving corrosion resistance. Coating with ZnO nanoparticles, due to the uniformity of the surface, had the highest hydrophilicity.