Tribocorrosion and Mechanical Properties of Nanotubes Grown on Ti-35Nb Alloy by Anodization

Abstract In this study, we evaluated the tribocorrosion and mechanical properties of nanotubes grown on a Ti-35Nb alloy. The nanotube arrays, approximately 2.0 µm thick, were formed through controlled anodization and annealing, composed of Ti and Nb oxides. The compact oxide film at the nanotube/substrate interface provided corrosion resistance, lubricating properties in worn tracks, and improved wear resistance. The nanotubes exhibited lower coefficient of friction, hardness, and elastic modulus compared to untreated Ti-35Nb. The crystalline structure of the nanotubes and the oxide interface layer enhanced adhesion, preventing plastic deformation and improving tribocorrosion resistance.