Enhanced corrosion resistance of 58S bioglass integrated TiO2 nanotubular arrays

Abstract

Titanium and its alloys are widely used for orthopedic implant fabrication. The interfacial reaction between titanium and living tissue is controlled by the oxide film formed on the surface of the titanium substrate. In this work, an anodic oxidation technique was explored to create the self-organized TiO2 nanotube array by maintaining a constant voltage of 30 V for 4 h using ethylene glycol (80%), ammonium fluoride (0.3 wt%), and the distilled water adjusted the remaining balance (19.7%). The constructed nanotube array has a diameter of 100 ± 12 nm. Further, a 58 S bioglass was synthesized using a sol-gel technique and integrated into the TiO2 nanotubular array. The samples were analyzed in terms of their topography and electrochemical response. The 58 S bioglass-integrated nanotubular surface effectively improves resistance to electrochemical corrosion.

Keywords

• TiO2 nanotubes
• Anodic oxidation
• 58 S bioactive glass
• Dip coating
• Corrosion resistance