In vitro corrosion behavior of coated Ti6Al4V with TiO2, ZrO2, and TiO2/ZrO2 mixed nanofilms using atomic layer deposition for dental implants

Ti-6Al-4 V (Ti(V)) is a biocompatible material with good mechanical properties, widely used as an implant in dental and orthopedic applications. However, it susceptible to corrosion when contact the human body mouth environment. To overcome this drawback enhance its use applications, we functionalized alloy using Atomic Layer Deposition (ALD). Thin films of TiO2 ZrO2 were deposited on polished Ti(V) discs by ALD single mixed oxides. Four groups characterized: non-deposited (control); deposited; TiO2/ZrO2 film 1:4 thickness ratio (TZO). precursors oxidizer tetrakis(dimethylamido)titanium, tetrakis(dimethylamido)zirconium, ozone, respectively. The existence composition each coating confirmed x-ray photoelectron spectroscopy. Electrochemical tests performed artificial saliva solution at 37 ± 1 °C investigate behavior surface simulated oral conditions. rate was decreased over 64 % coated samples compared control. roughness morphology areas analyzed before after optical profilometry, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), topography did not change significantly corrosion. SEM EDS results revealed that TZO group had best protection against control either study indicated having combination form ultra-thin ~30 nm would provide surfaces saliva, thereby enhancing robustness lifetime aggressive environment, therefore increasing patient satisfaction.