The effect of polarisation on the electrochemical behavior of Ti-13Nb-13Zr alloy

Assis, S. L.; Costa, Isolda

doi:10.1590/s1516-14392007000300014

Cited by 10 publications

(6 citation statements)

References 10 publications

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“…Electrochemical passivity of Ti and Nb has been mainly studied using galvanostatic, potentiostatic, potentiodynamic and EIS techniques [17][18][19][20]. In this paper we used potentiostatic and potentiodynamic methods combined with ellipsometry.…”

Section: Resultsmentioning

confidence: 99%

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Arsov

Mickova

2016

J. Electrochem. Sci. Eng.

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Electrochemical formation of passive films and active/passive transition on Ti and Nb metal surfaces in various concentrations of H2SO4 and KOH solutions was investigated using potentiostatic and cyclic voltammetry methods. By simultaneous electrochemical and in-situ ellipsometric measurements the coefficients of film thickness growth of passive films in the potential region from -1.5 V to 4 V were determined. Results indicate the strong influence of the concentration and electrolyte nature to the active/passive transitions and stability of passive films. The influence of cathodic pre-treatment on the passive films dissolution and appearance of the reactivation peaks during the reverse potential cycling were shown. By multiple cycle sequences in which the final anodic potential was gradually enlarged, the barrier properties of passive films on investigated electrodes were confirmed. The electrochemical and ellipsometric data showed that the passive films formed on Nb electrode are more resistant that passive films formed on Ti electrode, especially in higher concentrations of investigated aggressive solutions.

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Section: Resultsmentioning

confidence: 99%

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Arsov

Mickova

2016

J. Electrochem. Sci. Eng.

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“…The presented EEC is based on the model of a duplex structure oxide composed of an outer porous layer, which contains microscopic pores, and an inner barrier layer, which is compact and related to a high resistance . According to literature, the outer porous layer is associated to the biocompatibility of CPTi‐ and Ti‐based alloys, while the inner barrier layer is associated to the corrosion resistance. R Ω is the resistance of the artificial saliva solution, R p and CPE p represent the resistance and the capacity of the outer porous layer, while R b and CPE b represent the resistance and the capacity of the inner barrier layer.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical and biocompatibility examinations of high‐pressure torsion processed titanium and Ti–13Nb–13Zr alloy

et al. 2017

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The purpose of this study was to estimate the electrochemical behavior and biocompatibility of ultrafine-grained (UFG) commercially pure titanium (CPTi) and Ti-13Nb-13Zr (TNZ) alloy obtained by high-pressure torsion process. Electrochemical behavior of materials in artificial saliva at 37°C was evaluated by potentiodynamic polarization tests and electrochemical impedance spectroscopy (EIS), and the obtained results indicated that UFG TNZ alloy showed corrosion current density (j = 53 ± 5 nA cm ) which was 2 times lower compared to coarse-grained (CG) TNZ alloy (j = 110 ± 12 nA cm ) and higher corrosion resistance, while UFG CPTi and CPTi showed approximately the same corrosion rate (mean j ∼ 38-40 nA cm ). Static immersion test in artificial saliva, performed in this study, showed that the released ion concentrations from UFG materials were more than 10 times lower than the permitted concentration (the highest released Ti ion concentration from UFG CPTi and UFG TNZ alloy was 1.12 and 1.28 ppb, respectively, while permitted concentration was 15.5 ppb). The in vitro cytotoxicity tests, as the initial phase of the biocompatibility evaluation, showed that the fraction of surviving cells in all examined materials was much higher compared to the control sample and hence demonstrated absence of cytotoxicity and an increase of fibroblast cells adhesion on UFG materials surfaces. UFG CPTi and UFG TNZ alloy can be considered as promising materials for applications in dentistry due to high corrosion resistance and outstanding biocompatibility which were shown in this study. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1097-1107, 2018.

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“…There are a significant number of publications on the electrochemical behavior of β and near β Ti alloys in physiological environments. − These studies confirm that this class of Ti alloy has excellent biocompatibility for implant applications, although their corrosion resistances are slightly lower than other traditional Ti implant materials such as commercially pure Ti (cpTi) and Ti–6Al–V. In contrast, there are only a few reports on the biocorrosion of the Ti–25Nb–3Zr–3Mo–2Sn alloy.…”

Section: Introductionmentioning

confidence: 89%

Comparison of the Microstructure and Biocorrosion Properties of Additively Manufactured and Conventionally Fabricated near β Ti–25Nb–3Zr–3Mo–2Sn Alloy

Dargusch

Wang

Kent

et al. 2019

ACS Biomater. Sci. Eng.

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The microstructure and biodegradability of a near β Ti–25Nb–3Zr–3Mo–2Sn alloy produced by laser engineered net shaping have been compared to those of alloys produced via casting and cold rolling in order to identify the key effects of processing pathways on the development of microstructure and biocorrosion properties. Results confirm the significant influence of processing technique on microstructure and concomitant biocompatibility of the alloy. Tests using mesenchymal stem cells confirm the ability of the additively manufactured alloy to support cell adhesion and spreading.

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The effect of polarisation on the electrochemical behavior of Ti-13Nb-13Zr alloy

Cited by 10 publications

References 10 publications

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Electrochemical and biocompatibility examinations of high‐pressure torsion processed titanium and Ti–13Nb–13Zr alloy

Comparison of the Microstructure and Biocorrosion Properties of Additively Manufactured and Conventionally Fabricated near β Ti–25Nb–3Zr–3Mo–2Sn Alloy

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