A thermo-mechanical treatment to improve the superelastic performances of biomedical Ti–26Nb and Ti–20Nb–6Zr (at.%) alloys

Sun, Fan; Hao, Yulin; Nowak, Silvana; Gloriant, T.; Laheurte, Pascal; Prima, Frédéric

doi:10.1016/j.jmbbm.2011.06.003

Cited by 133 publications

(49 citation statements)

References 37 publications

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“…2 and Fig. 3), which was also observed in recent works after similar flash thermal treatment [10,14] or warm rolling The cyclic stress-strain curves, between 0 and 5% of strain, are given in Fig. 4c and 4d.…”

Section: Mechanical Propertiessupporting

confidence: 84%

Texture investigation of the superelastic Ti–24Nb–4Zr–8Sn alloy

Yang

Castany

Cornen

et al. 2014

Journal of Alloys and Compounds

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Section: Mechanical Propertiessupporting

confidence: 84%

Texture investigation of the superelastic Ti–24Nb–4Zr–8Sn alloy

Yang

Castany

Cornen

et al. 2014

Journal of Alloys and Compounds

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“…3 and 4, the SEM pictures of coating formed on one of the superelastic alloys [86,87], i.e. the Ti-Nb-Zr alloy surface after PEO treatment at voltages of 180 and 450 V, respectively, Table 2.…”

Section: Resultsmentioning

confidence: 99%

Development of copper-enriched porous coatings on ternary Ti-Nb-Zr alloy by plasma electrolytic oxidation

Rokosz

Hryniewicz

Raaen

et al. 2016

Int J Adv Manuf Technol

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In this paper, a preparation method and characteristics of porous coatings enriched in copper distributed in the whole volume on a ternary Ti-Nb-Zr alloy biomaterial obtained by plasma electrolytic oxidation (PEO) in an electrolyte containing H 3 PO 4 within Cu(NO 3 ) 2 at potentials of 180 and 450 V are presented. It has been shown that the PEO potential has impact on the thickness of the coatings, i.e., the higher the potential used, the thicker the coating obtained. Using XPS study, it was shown that copper inside the coating appears as Cu + and Cu 2+ ions, while titanium, niobium, and zirconium appear as Ti 4+ , Nb 5+ , and Zr x+ (x ≤ 2), respectively. It was also found that the roughness of PEO coating formed at 450 V is higher than the one obtained at 180 V, and it is well correlated with bigger pores after the PEO treatment. Additionally, in this paper two PEO coating models composed of three sub-layers are presented. The thickness of the outer top porous sub-layer obtained after PEO oxidation at both 180 and 450 V equals to about 2 μm, while the semi-porous as well as transition sub-layers are thicker after PEO processing at 450 V (5 μm) than those obtained at 180 V (4 μm thick). The creation of the top porous and transition compact sub-layer of PEO coating may be explained by switch-on and switch-off of the PEO potential, while the middle and semi-porous sub-layers are most likely formed during the stable voltage conditions of PEO treatment.

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“…Depending on the type of thermomechanical treatment they have undergone, TiNb alloys, with a composition ranging from Ti-23Nb to Ti-26Nb, can have varying Young's modulus. Recently, we have demonstrated that severe cold rolling deformation followed by flash aging treatment on TiNb and TiNbZr, in order to produce ultra fine grains and/or omega phase, is more effective to improve strength [26][27][28][29][30]. High ultimate tensile strength (800 MPa), and low modulus (30 GPa) are obtained by nanostructuration process, as illustrated in Fig.…”

Section: Research Agency Through the Functional Materials And Innovatmentioning

confidence: 99%

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

Piotrowski

Baptista²,

Patoor

et al. 2014

Materials Science and Engineering: C

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Although mechanical stress is known as being a significant factor in bone remodeling, most implants are still made using materials that have a higher elastic stiffness than that of bones.Load transfer between the implant and the surrounding bones is much detrimental, and osteoporosis is often a consequence of such mechanical mismatch. The concept of mechanical biocompatibility has now been considered for more than a decade. However, it is limited by the choice of materials, mainly Ti-based alloys whose elastic properties are still too far from cortical bone. We have suggested using a bulk material in relation with the development of a new beta titanium-based alloy. Titanium is a much suitable biocompatible metal, and betatitanium alloys such as metastable TiNb exhibit a very low apparent elastic modulus related to the presence of an orthorhombic martensite. The purpose of the present work has been to investigate the interaction that occurs between the dental implants and the cortical bone. 3D finite element models have been adopted to analyze the behaviour of the bone-implant system depending on the elastic properties of the implant, different types of implant geometry, friction force, and loading condition. The geometry of the bone has been adopted from a mandibular incisor and the surrounding bone. Occlusal static forces have been applied to the implants, and their effects on the bone-metal implant interface region have been assessed and 2 compared with a cortical bone/ bone implant configuration. This work has shown that the low modulus implant induces a stress distribution closer to the actual physiological phenomenon, together with a better stress jump along the bone implant interface, regardless of the implant design.Keywords: Dental biomechanics, Beta titanium alloy, Low modulus implant, Numerical modelling, Bone-implant interface IntroductionOver the last few decades, considerable progress in dental implantology has been made, with success rates exceeding 95% [1]. Implant stability is commonly considered as playing a major role in a successful osseointegration. Obtaining post-operative osseointegration is necessary in order to establish a solid and durable connection between the implant and the osseous structure. In agreement with the Wolff law, a process of osseous remodelling adapted to the stress level occurs after implantation [2][3][4]. This process is controlled by mechanical loads.When the occlusal forces induced on the bone exceed a physiological level, bone resorption can occur, with possible failure [5]. More importantly, the long-term performance of an implant is known to be strongly dependent on the bone tissue interaction [6]. The strain state which takes place at the interface between the bone and implant controls the bone tissue remodelling mechanisms [7]. Bone resorption is associated with a low strain state, and bone necrosis occurs when strain exceeds the maximum level.Evaluation of the risk requires a comprehension of the load transfer along the bone-dental implant interface. T...

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A thermo-mechanical treatment to improve the superelastic performances of biomedical Ti–26Nb and Ti–20Nb–6Zr (at.%) alloys

Cited by 133 publications

References 37 publications

Texture investigation of the superelastic Ti–24Nb–4Zr–8Sn alloy

Texture investigation of the superelastic Ti–24Nb–4Zr–8Sn alloy

Development of copper-enriched porous coatings on ternary Ti-Nb-Zr alloy by plasma electrolytic oxidation

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

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