Optimization of TiO2 nanotubes synthesis on cylindrical surfaces for bio-implants

Gabriela Strnad, Laszlo Jakab-Farkas, Paul Chetan, Cecilia Petrovan, L. Slătineanu, V. Merticaru, A.M. Mihalache, O. Dodun, M.I. Ripanu, G. Nagit, M. Coteata, M. Boca (+2 others)
2018 MATEC Web of Conferences  
Titanium based modified surfaces with TiO2 self-organized nanotubular layers for biomedical applications were synthesized on cylindrical surfaces by electrochemical anodization in phosphate/fluoride electrolytes. Cylindrical samples of  3.8 x 20 mm, made of Ti6Al4V alloy, with different initial surface preparation (machined, grinded, polished) were subjected to anodization and process parameters were optimized to assure the development of uniform titania nanotubular layers with nanotubes'
more » ... ith nanotubes' diameter of 25-100 nm. Optimal process parameters in our custom-built anodization cell are: electrolyte composition 1M H3PO4 + 0.4 wt% HF, anodization potential U = 24 V, potential ramp Ur = 0.08 V/s, distance anode-cathode d = 15 mm, current density in potentiostatic stage J = 35-50 A/m 2 , and anodization duration t = 30-35 min.
doi:10.1051/matecconf/201817804012 fatcat:czobcdj335fjbhrcwupir7657m