Surface Characteristics and Hydrophilicity of the as-Anodized Films Formed at High Current Density on Ti-6Al-4V in Different Electrolytes

Abstract

Hydrophilicity of the as-anodized films is an important factor for improving the osseointegration of Ti implants and bone tissues. This study investigated the surface characteristics and the hydrophilicity of the as-anodized films formed on Ti-6Al-4V. The as-anodized films on Ti-6Al-4V were prepared using galvanostatic method in 1M H3PO4 or 1M MCPM as an electrolyte with different current densities (5, 20, 80 mA/cm2) and using potentiostatic method with different voltages (5, 100 and 150 V) for 30 minute at room temperature. The as-anodized films shows a significantly lower water contact angle compared to the untreated Ti-6Al-4V. The porous oxide films were fabricated on Ti-6Al-4V. Ti 2p spectra show that the as anodized films consist of TiO2 and O 1s present hydroxide (OH-) and adsorbed water (H2O) that effect to the hydrophilicity on the as-anodized film surface. These results demonstrate that the galvanostatic method at a high current density of 20 mA/cm2 and the potentiostatic at a high voltage of 150 V in MCPM could enhance both of the high surface roughness and appropriate surface species which is leading to good hydrophilicity on the as-anodized films.

Effect of annealing temperature on the TiO2 anodized films properties for dental implant application

“…The hydrophilicity [9] of biomaterial surfaces affects protein adsorption and cellular adhesion in biological systems [10]. As a result, one of the most essential features of biomaterials is surface hydrophilicity [7,[11][12][13]. According to certain studies, surface hydrophilicity is influenced by surface chemistry, free energy, and surface roughness [14,15].…”

Effect of fluoride and hydroxyl group on bioactivity of the anodized films prepared by two‐step anodization at low current density

“…Titanium and its alloys are promising dental implant materials 1–7 due to their good mechanical properties, corrosion resistance, and good biocompatibility 8–28 . However, the causes of implantation failure are that their biological inertia results in the difficulty to directly join with the human bond tissue 29 and a poor ability to facilitate new tissue formation at the early stage of implantation.…”