Electrochemical corrosion study of CH-xTiO2 (x=Ag, Mg, Sr, and Zn) coated Ti-6Al-4V alloy for dental implant

Ti-6Al-4V is a widely used material for dental and orthopedic implants due to its biocompatibility and excellent mechanical properties. However, it is susceptible to corrosion when exposed to the human body and oral environment. To alleviate this issue and for enhancing and improving its application in dentistry, we applied a protective coating to the alloy surface. Thin films of CH-xTiO2 2 (x = Ag, Mg, Sr, and Zn) composites were deposited on titanium alloy substrates using the sol-gel dip coating technique. It is an environmentally friendly technique known for enhancing metal corrosion resistance. The surface roughness and morphology of coated and uncoated substrates were analyzed using profilometry, SEM, and AFM. The results revealed that the coating effectively protects the alloy surface. Corrosion protection in artificial saliva was evaluated through potentiodynamic polarization (Tafel), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) studies. The results indicate that the CH-xTiO2 2 coating significantly improves the corrosion resistance of titanium alloy surfaces in artificial saliva, enhancing the durability and performance of dental implants in challenging oral environments and thus increasing patient satisfaction.