Correlation of the nanostructure of the anodic layers fabricated on Ti13Nb13Zr with the electrochemical impedance response

摘要

TiO2 layers on Ti13Nb13Zr were fabricated by anodizing in acidic fluorine solution, to determine the nanostructure and electrochemical stability in a PBS solution. The anodization process showed higher growth efficiency. The morphology of nanostructured layer is more homogenous and thicker layers are obtained in shorter times regarding to organic electrolytes. Additionally, nanostructured oxide films were electrochemically studied to correlate the protective properties of the anodic films with the morphology and nanostructure developed in each anodizing condition. The anodic layers grown at short times present nanoporous structure and higher corrosion resistance than those fabricated at longer times, which possess nanotubular structure. (C) 2015 Elsevier Ltd. All rights reserved.