Electrochemical Formation of Self-Organized Nanotubular Oxide Layers on Ti13Zr13Nb Alloy for Biomedical Applications

Abstract

In this work, the anodic formation of self-organized nanotubular oxide layers on Ti13Zr13Nb implant alloy was presented. Anodic oxidation was carried out at room temperature in [1 M] (NH4)2SO4 solution with 1 wt% content of NH4F. The voltage and time of anodization was 20 V for 120 min, respectively. Under proposed conditions, the best arrangement of nanopores was observed. The physical and chemical properties of the anodized surface of the Ti13Zr13Nb alloy were characterized using grazing incidence X-ray diraction, scanning transmission electron microscopy, and atomic force microscopy. It was found that diameter of nanopores varied from 10 to 32 nm. Mechanism of the fabrication of the unique 3D tube-shaped nanostructure of TiO2 on the surface of the Ti13Zr13Nb alloy by electrochemical anodization, has been discussed.

Evaluation of Corrosion Resistance of Nanotubular Oxide Layers on the Ti13Zr13Nb Alloy in Physiological Saline Solution / Ocena Odporności Korozyjnej Nanotubularnych Struktur Tlenkowych Na Stopie Ti13Zr13Nb W Środowisku Płynów Ustrojowych”

“…The phase analysis of the substrate, Ti13Zr13Nb alloy, showed two phases: α-Ti (icDD PDF 03-065-3362) and β-Ti (ICDD PDF 01-089-4913). The presence of titanium oxide (TiO 2 rutile, ICDD PDF 00-034-0180) on the surface of the Ti13Zr13Nb alloy after anodization at 20 V for 120 min, was confirmed using the GiXD technique in the previous work [13].…”

“…in the cracks and crevices, the oxide layer dissolution proceeded, and initially pores and finally the self-organized nanotubular oxide layers, were formed. The detailed mechanism of the multistep formation of the titanium oxide single-walled nanotubes (SwNTs) on the Ti13zr13Nb alloy as well as their physico-chemical characteristics were shown in our earlier work [13]. The anodization process of the Ti13Zr13Nb alloy under proposed conditions allowed to obtain the TiO 2 SwNTs with an internal diameter in the range from 12 to 32 nm.…”

Electrochemical Formation of Second Generation TiO2 Nanotubes on Ti13Nb13Zr Alloy for Biomedical Applications

“…Addition of ions is responsible for the production of more uniform nanotubes of similar diameter as compared with non-uniform nanotubes received so far from other electrolytes with less ions F − . In general, the mechanism with schematic diagram of TiO 2 nanotube formation in fluorine-ion based electrolytes as a result of three simultaneous processes was discussed in our previous work [1]. Figure 1 shows the GIXD pattern of the Ti13Nb13Zr alloy after anodization in 1 M NH 4 (SO 4 ) 2 solution with 2 wt% NH 4 F, at 20 V for 12 min.…”

“…Surface modification of the Ti13Nb13Zr alloy expands the scope of the applicability of this alloy in medicine, particularly in the implantology [1][2][3]. In order to improve the biological activity of the Ti13Nb13Zr alloy and to increase its biocompatibility as well as ability to connect the bones and the implant, the surface of biomaterial should be subjected to modifications [1][2][3][4].…”

“…In order to improve the biological activity of the Ti13Nb13Zr alloy and to increase its biocompatibility as well as ability to connect the bones and the implant, the surface of biomaterial should be subjected to modifications [1][2][3][4]. One of the most popular, easy-to-use electrochemical method of surface modification of titanium and its alloys is anodization.…”