Mechanical properties and electrochemical behavior of porous Ti-Nb biomaterials

Yılmaz, Eren; Gökçe, Azim; Fındık, Fehim; Gülsoy, H. Özkan; İyibilgin, Osman

doi:10.1016/j.jmbbm.2018.07.018

Cited by 106 publications

(32 citation statements)

References 37 publications

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“…7 Stress-strain curves of P-Ti6Al4V structures with varying porosity percentages known, bone density plays an important role in implantation applications in terms of compatibility with natural bone. The density ranges of the P-Ti6Al4V structures produced in this study confirm that bone density ranges required to keep the bonding and healing ratios between the bone and the implant material as well as providing the low failure rates in implant applications [15,27]. Moreover, it has been reported in the literature that the ideal porosity of artificial implant or hard tissue biomaterials to be used in biomaterial applications should be between 30% and 90% [10].…”

Section: Effect Of Mg On Densitysupporting

confidence: 70%

Fabrication of porous-Ti6Al4V alloy by using hot pressing technique and Mg space holder for hard-tissue biomedical applications

Aslan

Aksakal

Fındık

2021

J Mater Sci: Mater Med

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Porous-Ti6Al4V (P-Ti6Al4V) alloys were produced using the hot pressing and spacer methods for hard tissue biomedical applications and in particular, the effects of porosity on the mechanical and morphological properties of the structures were investigated. P-Ti6Al4V structures having the homogeneously distributed porosities at 41.08, 52.37 and 64.10% were fabricated by adding 40, 50 and 60% spherical magnesium (Mg) powder with 350 μm particle sizes in average as spacers and evaporating magnesium via the atmosphere-controlled sintering. The obtained porous structures were characterized by SEM, XRD and EDS. Furthermore, the strength and elastic modulus were evaluated by performing compression tests. Elastic modulus and densities were found to be 40–171 MPa, 2–5 GPa and 1.59–2.61, respectively and these values have been shown to decrease with an increase in porosity. The achieved density and mechanical property values, in particular, elastic modulus are close to human bone and within acceptable ranges for with biomedical application purposes. In addition, it was also found out from the analysis of produced P-Ti6Al4V that macropores were responsible for mechanical anisotropy contributed to formation of homogeneous and inter-connected open pores.

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Section: Effect Of Mg On Densitysupporting

confidence: 70%

Fabrication of porous-Ti6Al4V alloy by using hot pressing technique and Mg space holder for hard-tissue biomedical applications

Aslan

Aksakal

Fındık

2021

J Mater Sci: Mater Med

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“…The second approach to creating biomechanically compatible metallic implants involves the production of porous metal structures using powder metallurgy, electrochemical synthesis, or additive manufacturing techniques [9,10,26,27,28,29,30,31,32,33]. It has been shown that the Young’s modulus of the produced porous structures can be adjusted to match that of the softest bone tissues [9,10,26].…”

Section: Introductionmentioning

confidence: 99%

The Electrochemical and Mechanical Behavior of Bulk and Porous Superelastic Ti‒Zr-Based Alloys for Biomedical Applications

et al. 2019

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Titanium alloys are well recognized as appropriate materials for biomedical implants. These devices are designed to operate in quite aggressive human body media, so it is important to study the corrosion and electrochemical behavior of the novel materials alongside the underlying chemical and structural features. In the present study, the prospective Ti‒Zr-based superelastic alloys (Ti-18Zr-14Nb, Ti-18Zr-15Nb, Ti-18Zr-13Nb-1Ta, atom %) were analyzed in terms of their phase composition, functional mechanical properties, the composition and structure of surface oxide films, and the corresponding corrosion and electrochemical behavior in Hanks’ simulated biological solution. The electrochemical parameters of the Ti-18Zr-14Nb material in bulk and foam states were also compared. The results show a significant difference in the functional performance of the studied materials, with different composition and structure states. In particular, the positive effect of the thermomechanical treatment regime, leading to the formation of a favorable microstructure on the corrosion resistance, has been revealed. In general, the Ti-18Zr-15Nb alloy exhibits the optimum combination of functional characteristics in Hanks’ solution, while the Ti-18Zr-13Nb-1Ta alloy shows the highest resistance to the corrosion environment. The Ti-18Zr-14Nb-based foam material exhibits slightly lower passivation kinetics as compared to its bulk equivalent.

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“…Similarly, the corrosion rate of porous Ti with 20% porosity was higher than that with 40% porosity in HCl solution [71] . Another point is that the passive film on the highly porous sample is less stable because of the difficulty involved in electrolyte penetration and oxygen supply through complicated pores [66,[72][73] . In addition, porous materials with large porosity exhibit larger surface areas exposed to the electrolyte, as well as more defects (rough surface, high volume of tips, and crevice).…”

Section: Porosity and Pore Sizementioning

confidence: 99%

Review on Corrosion Characteristics of Porous Titanium Alloys Fabricated by Additive Manufacturing

Gai

Bai

et al. 2021

J. Shanghai Jiaotong Univ. (Sci.)

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Porous titanium and its alloys have been considered as promising implants owing to their low elastic modulus and capability to provide channels for bone growth. Currently, additive manufacturing (3D printing) techniques have been successfully applied to produce porous titanium alloys owing to the advantages of controllable and precise fabrication. Considering the safety aspect, an understanding of corrosion in porous titanium alloys and the corresponding mechanisms is important for their long-term application in the human body. In this paper, the recent progress in improving the corrosion properties of porous titanium alloys fabricated via 3D printing techniques is reviewed. The effects of pore type, porosity, electrolyte, and modification of the material on the corrosion properties of porous titanium alloys are introduced and discussed. In addition, the limitations of traditional methods for measuring the corrosion performance of porous titanium alloys were analysed. Perspectives for evaluating and improving the corrosion performance of porous titanium alloys using new methods are provided.

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Mechanical properties and electrochemical behavior of porous Ti-Nb biomaterials

Cited by 106 publications

References 37 publications

Fabrication of porous-Ti6Al4V alloy by using hot pressing technique and Mg space holder for hard-tissue biomedical applications

Fabrication of porous-Ti6Al4V alloy by using hot pressing technique and Mg space holder for hard-tissue biomedical applications

The Electrochemical and Mechanical Behavior of Bulk and Porous Superelastic Ti‒Zr-Based Alloys for Biomedical Applications

Review on Corrosion Characteristics of Porous Titanium Alloys Fabricated by Additive Manufacturing

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