Influence of Thermal Treatment on the Microstructure, Mechanical Properties, and Corrosion Resistance of Newly Developed Ti20Nb13Zr Biomedical Alloy in a Simulated Body Environment

Hussein, M.A.; Azeem, M.A.; Kumar, A. Madhan; Al-Aqeeli, N.; Ankah, N.K.; Sorour, Ahmad A.

doi:10.1007/s11665-019-03908-4

Cited by 14 publications

(7 citation statements)

References 63 publications

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“…Figure 3 displays the XRD patterns of surface-treated TNZ specimens. TNZ alloy is classified as a (β + α) Ti alloy, as discussed previously [15,33]. The peaks of the β Ti and α Ti phases of TNZ alloy were observed for all treated TNZ specimens.…”

Section: Surface Characterization Resultsmentioning

confidence: 60%

“…From the observation of the PDP curves, all the investigated specimens exhibited an active-passive transition with a self-passivation region where the increase in current density against potential was nearly circumvented, revealing the formation of a stable passive layer. Generally, if the passivation current density value is lower, the metal surface tends to passivate easily [33]. Comparing the I p values of bare and treated specimens, bare specimens showed the highest I p values, followed by the HPT, SHT, and SHPT specimens, which implied the improved corrosion-resistant performance of TNZ specimens after surface treatment.…”

Section: In Vitro Corrosion Resistance Analysismentioning

confidence: 94%

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In Vitro Corrosion and Bioactivity Performance of Surface-Treated Ti-20Nb-13Zr Alloys for Orthopedic Applications

et al. 2019

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The influence of surface treatments on the microstructure, in vitro bioactivity and corrosion protection performance of newly fabricated Ti-20Nb-13Zr (TNZ) alloys was evaluated in simulated body fluid (SBF). The TNZ alloy specimens were treated with separate aqueous solutions of NaOH and H2O2 and with a mixture of both, followed by thermal treatment. The nanoporous network surface structure observed in H2O2-treated and alkali-treated specimens was entirely different from the rod-like morphology observed in alkali hydrogen peroxide-treated specimens. XRD results revealed the formation of TiO2 and sodium titanate layers on the TNZ specimens during surface treatments. The water contact angle results implied that the surface-treated specimens exhibited improved surface hydrophilicity, which probably improved the bioactivity of the TNZ specimens. The in vitro corrosion protection performance of the surface-treated TNZ specimens was analyzed using electrochemical corrosion testing in SBF, and the obtained results indicated that the surface-treated specimens exhibited improved corrosion resistance performance compared to that of the bare TNZ specimen. The in vitro bioactivity of the treated TNZ specimens was assessed by soaking in SBF, and all the investigated treated specimens showed numerous apatite nucleation spheres within 3 days of immersion in SBF.

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Section: Surface Characterization Resultsmentioning

confidence: 60%

Section: In Vitro Corrosion Resistance Analysismentioning

confidence: 94%

In Vitro Corrosion and Bioactivity Performance of Surface-Treated Ti-20Nb-13Zr Alloys for Orthopedic Applications

et al. 2019

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“…Kobayashi et al [19] conducted a TEM study related to phase transformation in Ti-13Nb-13r alloy during a heat treatment at 873 K. A rapid cooling from the β domain causes a phase transformation into the full αʹ-martensitic phase, as consistent with the literature above. The subsequent heat treatment at 873 K leads to the formation of α″, ω, and β phase in order with increasing duration from 5 min to 24 h. The size and volume fraction of α precipitates are proportional to the heat-treatment temperature [20,21], of which the present condition (773 K) was lower than that adopted by the previous work (873 K) [19]. This resulted in significantly small phases in the present CA alloys.…”

Section: Discussionmentioning

confidence: 63%

Kinetics of Capability Aging in Ti-13Nb-13Zr Alloy

et al. 2020

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Metals for biomedical implant applications require a simultaneous achievement of high strength and low Young’s modulus from the viewpoints of mechanical properties. The American Society for Testing and Materials (ASTM) standards suggest two types of processing methods to confer such a mechanical performance to Ti-13Nb-13Zr alloy: solution treatment (ST) and capability aging (CA). This study elucidated the kinetics of CA process in Ti-13Nb-13Zr alloy. Microstructural evolution and mechanical change were investigated depending on the CA duration from 10 min to 6 h. The initial ST alloy possessed the full α′-martensitic structure, leading to a low strength, low Young’s modulus, and high ductility. Increasing CA duration increased mechanical strength and Young’s modulus in exchange for the reduction of ductility. Such a tendency is attributed to the decomposition of α′ martensite into (α+β) structure, particularly hard α precipitates. Mechanical compatibility (i.e., Young’s modulus compensated with a mechanical strength) of Ti-13Nb-13Zr alloy rarely increased by changing CA duration, suggestive of the intrinsic limit of static heat treatment.

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“…Al still exists in this alloy which causes health issues. 105,114 The α and α + β alloys are not perfectly suitable for the biomedical field because they exhibit higher elastic modulus compared to bone, resulting in a “stress shielding effect.” These alloys contain toxic elements that cause long-term health issues. As a result of these factors, researchers concentrated on developing β-Ti alloys with low elastic modulus, which contain nontoxic elements.…”

Section: Ti and Its Alloys Metallurgymentioning

confidence: 99%

A review on β-Ti alloys for biomedical applications: The influence of alloy composition and thermomechanical processing on mechanical properties, phase composition, and microstructure

Kanapaakala

Sathesh

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Titanium and its alloys are potential materials for orthopedic implant applications due to their appropriate biological and mechanical behavior. As biocompatibility and biomechanical compatibilities are essential parameters for determining a biomedical implant's performance and service life, this research review article discussed the novel Ti alloys with nontoxic and biocompatible alloying elements with an elastic modulus similar to the bone. Among Ti alloys, β-Ti alloys are appropriate for load-bearing implant applications due to lower elastic modulus and nontoxic elements, including Ti, Ta, Nb, Zr, Sn, and Mo. Even though the β-Ti alloys possess a lesser elastic modulus compared to other metallic biomaterials, two issues associated with β-Ti alloys that result in implant failure are that they still possess a higher elastic modulus than human bone and they have insufficient strength. Alloy composition and thermomechanical processing characteristics play a vital role in altering the mechanical properties and microstructure of β-Ti alloys. Hence, this review article emphasizes the alloying and thermomechanical processing effects on the mechanical properties and microstructure of β-Ti alloys.

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Influence of Thermal Treatment on the Microstructure, Mechanical Properties, and Corrosion Resistance of Newly Developed Ti20Nb13Zr Biomedical Alloy in a Simulated Body Environment

Cited by 14 publications

References 63 publications

In Vitro Corrosion and Bioactivity Performance of Surface-Treated Ti-20Nb-13Zr Alloys for Orthopedic Applications

In Vitro Corrosion and Bioactivity Performance of Surface-Treated Ti-20Nb-13Zr Alloys for Orthopedic Applications

Kinetics of Capability Aging in Ti-13Nb-13Zr Alloy

A review on β-Ti alloys for biomedical applications: The influence of alloy composition and thermomechanical processing on mechanical properties, phase composition, and microstructure

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