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”

Abstract

EvaluatIon of corrosIon rEsIstancE of nanotubular oxIdE layErs on thE ti13Zr13nb alloy In physIologIcal salInE solutIonOcena OdpOrnOści kOrOzyjnej nanOtubularnych struktur tlenkOwych na stOpie ti13Zr13nb w śrOdOwisku płynów ustrOjOwych"Evaluation of corrosion resistance of the self-organized nanotubular oxide layers on the Ti13Zr13Nb alloy, has been carried out in 0.9% NaCl solution at the temperature of 37ºC. Anodization process of the tested alloy was conducted in a solution of 1M (NH4)2SO4 with the addition of 1 wt.% NH4F. The self-organized nanotubular oxide layers were obtained at the voltage of 20 V for the anodization time of 120 min. Investigations of surface morphology by scanning transmission electron microscopy (STem) revealed that as a result of the anodization under proposed conditions, the single-walled nanotubes (SwNTs) can be formed of diameters that range from 10 to 32 nm. Corrosion resistance studies of the obtained nanotubular oxide layers and pure Ti13Zr13Nb alloy were carried out using open circuit potential, anodic polarization curves, and electrochemical impedance spectroscopy (EIS) methods. It was found that surface modification by electrochemical formation of the selforganized nanotubular oxide layers increases the corrosion resistance of the Ti13Zr13Nb alloy in comparison with pure alloy.

Effect of Autoclaving Time on Corrosion Resistance of Sandblasted Ti G4 in Artificial Saliva

“…The calculated values of the C dl parameter are of the order of 10 −5 F cm −2 for the electrodes after autoclaving and decrease compared to that for the Ti G4 electrode before autoclaving, which is evidence of the decreasing electrochemical activity (Table 9). Similar values of the C dl were reported in the literature for passivated titanium and its alloys in a biological environment [40,47,48].…”

“…Electrochemical impedance spectroscopy (EIS) as the only electrochemical method allows quantitative determination of the kinetics of these processes in in situ tests with simultaneous characteristics of the capacitive behavior of the tested systems. Innovative impedance studies presented in our earlier works have shown that EIS can be proposed as a modern tool in in vitro studies of corrosion resistance of titanium and its alloys in body fluids, which provides information on the detailed mechanisms and kinetics of electrochemical corrosion and the properties of passive layers [40,41,47,48].…”

Real-Time Corrosion Monitoring of AISI 1010 Carbon Steel with Metal Surface Mapping in Sulfolane

“…Contact potential difference ( CPD ) maps and surface maps of the investigated materials were recorded by means of Scanning Kelvin Probe (SKP) technique using PAR Model 370 Scanning Electrochemical Workstation (Odessa, FL, USA) equipped with a tungsten Kelvin probe (KP) with a diameter of 500 μm [24,25,26,27,28]. The scanning area was 4000 × 4000 μm 2 and the distance between the probe and the sample was ca.…”

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

“…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.…”