G. A. Crawford, N. Chawla, Arizona State University, Tempe, AZ; J. E. Houston, Sandia National Laboratory, Albuquerque, NM
Titanium oxide coatings have been shown to exhibit desirable properties as biocompatible coatings. In this talk we report on the mechanical properties and deformation behavior of TiO2 nanotubes grown on pure titanium substrates through anodic oxidation. Characterization of the as-processed coatings was conducted using scanning electron microscopy and Focused Ion Beam milling. Nanoindentation, using both Interfacial Force Microscopy and a commercial nanoindenter, was used to probe mechanical properties such as Young’s modulus and hardness. These techniques were also used to study the inelastic deformation behavior of the nanotubes. In addition, nano-scratch testing, in conjunction with SEM characterization, was employed to study the adhesion strength between the TiO2 coating and Ti substrate. The effect of coating thickness, tube diameter and tube wall thickness on the mechanical behavior will be discussed.
Summary: Titanium oxide coatings have been shown to exhibit desirable properties as biocompatible coatings. This talk will focus on the mechanical properties and deformation behavior of TiO
2 nanotubes grown on pure titanium substrates through anodic oxidation.
