Corrosion behaviour of a new Ti‐6Al‐2Nb‐1Ta alloy in various solutions

Pîrvu, Cristian; Demetrescu, Ioana; Drob, Paula; Vasilescu, Ecaterina; Ivanescu, Steliana; Mindroiu, Mihaela; Vasilescu, Cora; Drob, Silviu Iulian

doi:10.1002/maco.201006041

Cited by 11 publications

(9 citation statements)

References 27 publications

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“…The fact that the Ti alloy biomaterials are covered with oxides not only inhibits corrosion but also increases biocompatibility. Thus, there is a sustained concern for growing and organizing oxide layers on the surface of these alloys in order to improve the surface properties [55][56][57][58][59][60][61][62][63].…”

Section: Ti50zr Alloy Surface Modificationmentioning

confidence: 99%

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

et al. 2020

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Despite many discussions about Ti versus Zr, Ti remains the golden standard for dental implants. With the extended use of implants, their rejection in peri-implantitis due to material properties is going to be an important part of oral health problems. Extended use of implants leading to a statistical increase in implant rejection associated with peri-implantitis raises concerns in selecting better implant materials. In this context, starting in the last decade, investigation and use of TiZr alloys as alternatives for Ti in oral dentistry became increasingly more viable. Based on existing new results for Ti16Zr (Roxolid) implants and Ti50Zr alloy behaviour in oral environments, this paper presents the trends of research concerning the electrochemical stability, mechanical, and biological properties of this alloy with treated and untreated surfaces. The surface treatments were mostly performed by anodizing the alloy in various conditions as a non-sophisticated and cheap procedure, leading to nanostructures such as nanopores and nanotubes. The drug loading and release from nanostructured Ti50Zr as an important perspective in oral implant applications is discussed and promoted as well.

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Section: Ti50zr Alloy Surface Modificationmentioning

confidence: 99%

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

et al. 2020

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“…Another quaternary Ti–29Nb–13Ta–4.6Zr alloy, 18–21 which was suggested as one of the best bioalloys, shows a high tensile strength and low modulus, but cannot form chemical bond with living bones. The new Ti–6Al–2Nb–1Ta alloy 22 satisfies the mechanical and anticorrosive requirements in neutral environment. Also, a new quaternary Ti–34Nb–9Zr–8Ta alloy 23 was elaborated and its microstructural and strengthening mechanisms were evaluated.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the corrosion resistance and structural and mechanical properties of a titanium base alloy by thermo‐mechanical processing

Cojocaru

Răducanu

Cincă

et al. 2012

Materials & Corrosion

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In this work, a new ternary Ti–25Ta–5Zr alloy (with nontoxic alloying elements) was obtained and used to develop a thermo‐mechanical procedure in order to optimize the balance strength – elastic modulus. Data about structural (by SEM) and mechanical properties are investigated. Also, its electrochemical behaviour in Ringer–Brown and Ringer solutions of different pH values (simulating severe functional conditions of an implant) was studied by cyclic potentiodynamic and linear polarization and electrochemical impedance spectroscopy (EIS). From cyclic potentiodynamic polarization curves it resulted the nobler behaviour of the thermo‐mechanical treated alloy than as‐cast alloy due to the favourable influence of the applied processing. Impedance spectra were fitted with one time constant equivalent circuit characterizing a very stable, resistant oxide passive film. The values of the open circuit potentials for the treated alloy are nobler than of the as‐cast alloy and tended to more positive values in time, proving that the passive film on its surface is more compact and thickened in time.

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“…Titanium and titanium alloys are employed widely in biomedical applications . The Ti6Al4V alloy is used in biomedical applications because it is mechanically stronger and resists corrosion better than CoCr alloys and stainless steel .…”

Section: Introductionmentioning

confidence: 99%

The estimation of corrosion behavior of thermal oxidized TiNbTaZr alloys for biomedical applications

Mareci

Bolat

Munteanu

et al. 2014

Materials & Corrosion

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The corrosion behavior of two oxidized TiNbTaZr alloys (Ti25Nb8Ta10Zr and Ti21Nb15Ta6Zr) at 500 and 800 °C for 2‐h in 0.9 wt% NaCl solution are evaluated. Both samples were examined using electrochemical techniques: electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves. The electrochemical corrosion parameters obtained from the EIS and potentiodynamic polarization curves indicated a typical passive behavior for untreated and oxidized TiNbTaZr alloys. EIS studies showed high impedance values for both oxidized samples, increasing with exposure time. The polarization results show excellent corrosion resistance for oxidized TiNbTaZr alloys, corroborated by the low corrosion and anodic current density. The oxidation in air at 500 and 800 °C do not exhibit the susceptibility of localized corrosion processes in 0.9 wt% NaCl solution. In addition, scanning electron microscopy (SEM) was employed to observe the surface morphology after polarization test in 0.9 wt% NaCl solution. The oxidized Ti21Nb15Ta6Zr alloy appears to possess superior corrosion resistance than the oxidized Ti25Nb8Ta10Zr alloy in 0.9 wt% NaCl solution.

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Corrosion behaviour of a new Ti‐6Al‐2Nb‐1Ta alloy in various solutions

Cited by 11 publications

References 27 publications

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

The Trends of TiZr Alloy Research as a Viable Alternative for Ti and Ti16 Zr Roxolid Dental Implants

Improvement of the corrosion resistance and structural and mechanical properties of a titanium base alloy by thermo‐mechanical processing

The estimation of corrosion behavior of thermal oxidized TiNbTaZr alloys for biomedical applications

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