Investigation of passive films grown on biocompatible Ti‐50Zr and Ti‐13Zr‐13Nb alloys by XPS

Oliveira, Nilson T. C.; Biaggio, Sonia R.; Nascente, P. A. P.; Rocha‐Filho, Romeu C.; Bocchi, Nerilso

doi:10.1002/sia.2201

Cited by 10 publications

(4 citation statements)

References 15 publications

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“…Yu et al have reported an increase in thickness of the oxide film with the potential, which play an important role in the improvement of the corrosion resistance [31]. Uniform surface corrosion of Ti-Nb or Ti-Nb-Zr alloys provides a passive film that is mainly formed by TiO 2 , Nb 2 O 5 , or ZrO 2 [14,15,32]. Compared to the film spontaneously formed in air, the polarization leads to a complete transformation from TiO or Ti 2 O 3 to TiO 2 (more stable) over 1.2 V (vs. SCE), which is helpful for improvement of corrosion resistance [33].…”

Section: Methodsmentioning

confidence: 99%

Electrochemical corrosion behavior of biomedical Ti–22Nb and Ti–22Nb–6Zr alloys in saline medium

Wang

Zheng

Zhao

2009

Materials & Corrosion

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The aims of this study were to investigate the effects of Zr addition and potentiodynamic polarization on the microstructure and corrosion resistance of Ti-22Nb and Ti-22Nb-6Zr alloy samples. The corrosion tests were carried out in 0.9% NaCl at 37 8C and neutral pH value, utilizing the OCP, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) techniques. The results of XRD and optical microscopy indicated that the addition of Zr stabilized the b phase, which plays a crucial role in the corrosion resistance improvement of the Ti-22Nb-6Zr alloy. From the polarization curves, it can be seen that the alloys exhibited a wide passive region without the breakdown of the passive films and also low corrosion current densities. In addition, the values of the corrosion current densities and passive current densities decreased with the addition of 6 at% Zr into the Ti-22Nb alloy. The EIS results of these two alloy samples after 1-h immersion in 0.9% NaCl solution, and being fitted by R S (Q P R P ) model, suggested that the corrosion resistance of the passive films improved with the addition of Zr and only a single passive film formed on the surfaces. However, two time constants were observed for the Ti-22Nb and Ti-22Nb-6Zr alloy samples after potentiodynamic polarization, the spectra of which can be fitted using the R s (Q o (R o (Q b R b ))) model. In addition, the corrosion resistance of the two alloy samples was reinforced significantly because of polarization when compared to the immersed samples. All these observations suggested a nobler electrochemical behavior of the titanium alloys with the addition of Zr element and after polarization.

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Section: Methodsmentioning

confidence: 99%

Electrochemical corrosion behavior of biomedical Ti–22Nb and Ti–22Nb–6Zr alloys in saline medium

Wang

Zheng

Zhao

2009

Materials & Corrosion

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“…The Ti enrichment in the surface oxidation layers has been found for Ti-13Nb-13Zr and Ti-50Zr alloys. 50 Recently, this result was also found for co-deposited Ti-Nb alloy lms. 33 In this co-deposition process, pure Ti and pure Nb targets are operated at constant conditions, respectively.…”

Section: Resultsmentioning

confidence: 53%

The phase, morphology and surface characterization of Ti–Mo alloy films prepared by magnetron sputtering

Liu

Yang

et al. 2017

RSC Adv.

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“…Investigations on electropolishing [30], preparation of the nanotubular oxide layers [31][32][33], and plasma electrolytic oxidation were conducted up to now [34][35][36][37][38]. Preparation of thin oxide layers on the Ti-13Nb-13Zr alloy was investigated by voltammetry but up to only 8 V [39,40].…”

Section: Introductionmentioning

confidence: 99%

Anodic oxidation of the Ti–13Nb–13Zr alloy

Mosiałek

Nawrat

Szyk-Warszyńska

et al. 2014

J Solid State Electrochem

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This work presents the results of the investigations on the electropolishing and anodic oxidation of the Ti-13Nb-13Zr titanium alloy. Electropolishing was conducted in the solution containing ammonium fluoride and sulfuric acid, whereas the solution of phosphoric acid was used for anodic oxidation of the alloy. The influence of electropolishing and anodization process parameters on the texture (scanning electron microscopy (SEM)) and chemical composition (X-ray photoelectron spectroscopy (XPS)) of the surface layer was established. Electrochemical impedance spectroscopy in 5 % NaCl solution was used for the determination of the corrosion resistance of the alloy.

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Investigation of passive films grown on biocompatible Ti‐50Zr and Ti‐13Zr‐13Nb alloys by XPS

Cited by 10 publications

References 15 publications

Electrochemical corrosion behavior of biomedical Ti–22Nb and Ti–22Nb–6Zr alloys in saline medium

Electrochemical corrosion behavior of biomedical Ti–22Nb and Ti–22Nb–6Zr alloys in saline medium

The phase, morphology and surface characterization of Ti–Mo alloy films prepared by magnetron sputtering

Anodic oxidation of the Ti–13Nb–13Zr alloy

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