Mechanical Characterization of Ti–12mo–13nb Alloy for Biomedical Application Hot Swaged and Aged

Gabriel, Sinara Borborema; Dille, Jean; Rezende, Monica Castro; Mei, Paulo Roberto; Almeida, Luiz Henrique de; Baldan, Renato; Nunes, Carlos Ângelo

doi:10.1590/1516-1439.329614

Cited by 20 publications

(9 citation statements)

References 30 publications

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“…Figure 4 shows the values of the Young's modulus for the alloys as a function of the increase of niobium in the as-cast Ti-12Mo-xNb alloys. The same effect was corroborated by Borborema et al 13,23,25 and Kin et al 26 reporting that niobium acts as a β-stabilizer and in controlled cooling other phases are not formed (eg ω phase) and hardness decreases as a result of increasing niobium content. Nnamchi et al 28 studied the effects of increase the niobium in binary alloys of the Ti-Mo-Nb-Zr system.…”

Section: Resultssupporting

confidence: 59%

Mechanical and Microstructural Characterization of AS-CAST Ti-12Mo-xNb Alloys for Orthopedic Application

et al. 2019

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The development of β-metastable titanium alloys that combine low Young's modulus, good mechanical properties, corrosion resistance and biocompatibility has attracted industry interest. This type of alloy is an alternative to commercial alloys such as Ti-6Al-4V, avoiding the cytotoxic effect that occurs with Al and V in the human body in the manufactured orthopedic prostheses. In this scenario, the present work aims to characterize the effect of Nb concentration in the properties of Ti alloys based on the Ti-12Mo-xNb stoichiometry (x = 0, 3, 8, 13, 17 and 20). All alloys were produced by arc melting with non-consumable tungsten electrode in an argon atmosphere and the ingots were characterized by x-ray diffraction (XRD), optical microscopy (OM), Vickers microhardness and Young's modulus was measured by impulse excitation and density was measured using the Archimedes' principle. The Ti-12Mo alloy and the Ti-12Mo-20Nb alloy showed the lowest Young's modulus. The best hardness/ modulus was found for the Ti-12Mo-3Nb alloy. All the alloys studied in this work showed hardness/ modulus ratio above the traditional Ti-6Al-4V alloy (2.85), presented great potential for the biomedical application.

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Section: Resultssupporting

confidence: 59%

Mechanical and Microstructural Characterization of AS-CAST Ti-12Mo-xNb Alloys for Orthopedic Application

et al. 2019

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“…This table contents also the mechanical properties measured in previous studies 22,24 on Ti-6Al-4V, Ti-12Mo-13Nb and Ti10Mo-20Nb. The two last alloys were hot swaged and aged for 4h at 500°C.…”

Section: Mechanical Characterizationmentioning

confidence: 66%

“…Therefore, it is necessary to find the best compromise between these mechanical properties. Hardness to Young's modulus ratio is often used as key indicator in order to evaluate the mechanical performance of metallic biomaterials for implant applications 22 . Higher is the ratio, more appropriate is the material.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

“…Moreover, a recent in vitro research demonstrates the very good biocompatibility of Ti-Mo-Nb alloys 20 . In particular, Gabriel et al have shown that the Ti-12Mo-13Nb 21,22 and Ti-10Mo-20Nb 23,24 alloys, aged at 500°C after cold or hot swaging, present higher yield strength/elastic modulus ratio and higher hardness/ elastic modulus ratio compared to commercially Ti-6Al-4V, indicating a great potential for biomedical application.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Ti-12Mo-8Nb Alloy Hot Swaged and Treated for Orthopedic Applications

et al. 2017

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Metastable β-type Ti alloys with non-toxic addition elements such as Mo, Zr, Sn, Ta and Nb were developed as an alternative to the widely used Ti-6Al-4V alloy for biomedical applications. These alloys possess enhanced biocompatibility and reduced elastic modulus in comparison with Ti-6Al-4V. Moreover, for orthopedic implants, low Young's modulus is required in order to avoid the stress shielding phenomenon. This study analyzes the microstructure and mechanical properties of a new Ti-12Mo-8Nb alloy after hot swaging, annealing at 950 ºC for 1h and water quenching. The alloy was characterized by X-ray diffraction, optical microscopy and transmission electron microscopy. Tensile tests were performed at room temperature. Young's modulus and hardness values were also measured. The structural characterization reveals a metastable β structure containing only a small amount of α and ω phases. Exhibiting a lower Young's modulus than Ti-6Al-4V and other previously studied Ti-Mo-Nb alloys, the Ti-12Mo-8Nb alloy can be a promising alternative for orthopedic application.

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“…It is known that the Mo has high solubility in Ti and larger atomic radius, causing the lower Young's modulus, for instance, in the Ti-12Mo-13Nb. By this way, the presence of larger atomic radius reduces the binding force of the Ti lattice, expanding the unit cell volume [17] . The second barrier formed spontaneously is the TiO2 thin film.…”

Section: It Can Be Concluded That the Obtained Tio2 Andmentioning

confidence: 99%

Ti-Mo alloys: corrosion study in solutions simulating commercial gels

Rodrigues

Guastaldi

2018

JPSE

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Regarding to the influence of chloride and fluoride ions on the corrosion resistance, the electrochemical behavior of Ti alloys has been deeply studied. In this work, the main goal was to investigate the electrochemical behavior of cp-Ti and Ti-Mo alloys containing 6, 10 and 15 wt% of Mo concentrations. All the samples were immersed in different solutions, such as 0.15 mol L-1 Na2SO4, 0.15 mol L-1 Ringer, 0.15 mol L-1 Ringer plus 0.036 mol L-1 NaF and 0.036 mol L-1 NaF. Simulating the commercial fluorinated gels, the NaF solutions naturally-aerated were prepared with 1450 ppm of fluoride ions. The electrochemical techniques applied in this work were the open-circuit potential, cyclic voltammetry, besides the technique for chemical identification, which was X-ray photoelectron spectroscopy. The formation and growth of TiO2 and MoO2 were identified, without pitting corrosion. The electrochemical stability and the corrosion resistance of the Ti-Mo alloys decreased in the solutions containing chloride and fluoride ions, with an appreciative decrease especially in the fluorinated medium. The Ti-Mo alloy with higher Mo content concentration was the material with higher corrosion resistance. Therefore, it is a promising candidate as a biomaterial, once the osseointegration needs a satisfactory corrosion resistance for being achieved.

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Mechanical Characterization of Ti–12mo–13nb Alloy for Biomedical Application Hot Swaged and Aged

Cited by 20 publications

References 30 publications

Mechanical and Microstructural Characterization of AS-CAST Ti-12Mo-xNb Alloys for Orthopedic Application

Mechanical and Microstructural Characterization of AS-CAST Ti-12Mo-xNb Alloys for Orthopedic Application

Microstructure and Mechanical Properties of Ti-12Mo-8Nb Alloy Hot Swaged and Treated for Orthopedic Applications

Ti-Mo alloys: corrosion study in solutions simulating commercial gels

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