On the increasing of adhesive strength of nanotube layers on beta titanium alloys for medical applications

Fojt, Jaroslav; Filip, V.; Joska, Luděk

doi:10.1016/j.apsusc.2015.07.074

Cited by 19 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Decrease of the potential at the end of the anodisation led to the creation of a compact oxide interlayer between the tubes and the metal. This layer was approximately 100 nm thick and increased adhesion of the nanostructure to the base material .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Fojt

Hybášek

Joska

2016

Materials & Corrosion

View full text Add to dashboard Cite

Titanium β‐alloys are perspective material for orthopaedic implants. Their bioactivity could be increased by surface nanostructuring. The nanotubular surface on the Ti‐35Nb‐2Zr alloy was prepared by anodic oxidation. The surfaces were characterised by electron microscopy and photoelectron spectroscopy. The electrochemical behaviour was determined by impedance spectroscopy and Mott–Schottky measurement. The surface analysis indicates enrichment of the oxidic layer by niobium. Nanotubular oxide layer behaviour in phosphate‐buffered solution was compared with native passive oxides surface and with thick oxide layer. The results of impedance measurement on the nanotubes were strongly affected by oxygen in the test solution. The corrosion resistance of the nanostructure was higher than that of the native passive layer. In the terms of the corrosion behaviour, the nanostructuring seems to be a promising surface treatment for medical applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Fojt

Hybášek

Joska

2016

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…The adhesive strength of the nanotubes can be also increased by changing the anodizing mode. For example, a three-step procedure consisting of (i) potentiodynamic polarization from open circuit potential to the end potential, (ii) potentiostatic polarization at the end potential for a selected time, and (iii) potentiodynamic polarization to return to the open circuit potential has been proved to be successful [151]. A recent study [152] shows that the growth of a nanotubular oxide layer on Ti10Mo8Nb beta alloy by electrochemical anodization in an electrolyte composed of glycerol-water with low content of NH 4 F allows a great adherence to the metal surface due to the electrochemical mechanism of passivation.…”

Section: Electrochemical Biocorrosion Of Passive Coatings On β-Ti Alloysmentioning

confidence: 99%

Passive Layers and Corrosion Resistance of Biomedical Ti-6Al-4V and β-Ti Alloys

et al. 2021

View full text Add to dashboard Cite

The high specific strength, good corrosion resistance, and great biocompatibility make titanium and its alloys the ideal materials for biomedical metallic implants. Ti-6Al-4V alloy is the most employed in practical biomedical applications because of the excellent combination of strength, fracture toughness, and corrosion resistance. However, recent studies have demonstrated some limits in biocompatibility due to the presence of toxic Al and V. Consequently, scientific literature has reported novel biomedical β-Ti alloys containing biocompatible β-stabilizers (such as Mo, Ta, and Zr) studying the possibility to obtain similar performances to the Ti-6Al-4V alloys. The aim of this review is to highlight the corrosion resistance of the passive layers on biomedical Ti-6Al-4V and β-type Ti alloys in the human body environment by reviewing relevant literature research contributions. The discussion is focused on all those factors that influence the performance of the passive layer at the surface of the alloy subjected to electrochemical corrosion, among which the alloy composition, the method selected to grow the oxide coating, and the physicochemical conditions of the body fluid are the most significant.

show abstract

“…The anodic oxidation method for the formation of nanotubular TiO 2 on titanium alloys is generally known and has been used in many studies [29][30][31][32]. The morphology of prepared nanotubes is strongly dependent on applied potential, time of exposition and composition of the electrolyte.…”

Section: Preparation Of Tio 2 Nanotubesmentioning

confidence: 99%

A Ru/RuO2-Doped TiO2 Nanotubes as pH Sensors for Biomedical Applications: The Effect of the Amount and Oxidation of Deposited Ru on the Electrochemical Response

et al. 2021

Self Cite

View full text Add to dashboard Cite

In the field of orthopedic or dental implants, titanium and its alloys are most commonly used because of their excellent mechanical and corrosion properties and good biocompatibility. After implantation into the patient’s body, there is a high risk of developing bacterial inflammation, which negatively affects the surrounding tissues and the implant itself. Early detection of inflammation could be done with a pH sensor. In this work, pH-sensitive systems based on TiO2-Ru and TiO2-RuO2 combinations were fabricated and investigated. As a base material, Ti-6Al-4V alloy nanostructured by anodic oxidation was used. Ruthenium was successfully deposited on nanotubular TiO2 using cyclic polarization, galvanostatic and potentiostatic mode. Potentiostatic mode proved to be the most suitable. The selected samples were oxidized by cyclic polarization to form a TiO2-RuO2 system. The success of the oxidation was confirmed by XPS analysis. The electrochemical response of the systems to pH change was measured in saline solution using different techniques. The measurement of open circuit potential showed that unoxidized samples (TiO2-Ru) exhibited sub-Nernstian behavior (39.2 and 35.8 mV/pH). The oxidized sample (TiO2-RuO2) containing the highest amount of Ru exhibited super-Nernstian behavior (67.3 mV/pH). The Mott–Schottky analysis proved to be the best method. The use of the electrochemical impedance method can also be considered, provided that greater stability of the samples is achieved.

show abstract

On the increasing of adhesive strength of nanotube layers on beta titanium alloys for medical applications

Cited by 19 publications

References 30 publications

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Passive Layers and Corrosion Resistance of Biomedical Ti-6Al-4V and β-Ti Alloys

A Ru/RuO2-Doped TiO2 Nanotubes as pH Sensors for Biomedical Applications: The Effect of the Amount and Oxidation of Deposited Ru on the Electrochemical Response

Contact Info

Product

Resources

About