Superelasticity, corrosion resistance and biocompatibility of the Ti–19Zr–10Nb–1Fe alloy

Xue, Pu; Li, Yan; Li, Kangming; Zhang, Deyuan; Zhou, Chungen

doi:10.1016/j.msec.2015.02.004

Cited by 61 publications

(31 citation statements)

References 46 publications

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“…This is probably caused by the different variants of the ω phases. Similar results were reported for β-type Ti-30Zr-5Mo, Ti-24Nb-2Zr, and Ti-19Zr-10Nb-1Fe elsewhere323334.…”

Section: Resultssupporting

confidence: 89%

Novel Ti-Ta-Hf-Zr alloys with promising mechanical properties for prospective stent applications

Lin

Ozan

et al. 2016

Sci Rep

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Titanium alloys are receiving increasing research interest for the development of metallic stent materials due to their excellent biocompatibility, corrosion resistance, non-magnetism and radiopacity. In this study, a new series of Ti-Ta-Hf-Zr (TTHZ) alloys including Ti-37Ta-26Hf-13Zr, Ti-40Ta-22Hf-11.7Zr and Ti-45Ta-18.4Hf-10Zr (wt.%) were designed using the d-electron theory combined with electron to atom ratio (e/a) and molybdenum equivalence (Moeq) approaches. The microstructure of the TTHZ alloys were investigated using optical microscopy, XRD, SEM and TEM and the mechanical properties were tested using a Vickers micro-indenter, compression and tensile testing machines. The cytocompatibility of the alloys was assessed using osteoblast-like cells in vitro. The as-cast TTHZ alloys consisted of primarily β and ω nanoparticles and their tensile strength, yield strength, Young’s modulus and elastic admissible strain were measured as being between 1000.7–1172.8 MPa, 1000.7–1132.2 MPa, 71.7–79.1 GPa and 1.32–1.58%, respectively. The compressive yield strength of the as-cast alloys ranged from 1137.0 to 1158.0 MPa. The TTHZ alloys exhibited excellent cytocompatibility as indicated by their high cell viability ratios, which were close to that of CP-Ti. The TTHZ alloys can be anticipated to be promising metallic stent materials by virtue of the unique combination of extraordinarily high elastic admissible strain, high mechanical strength and excellent biocompatibility.

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“…This is probably caused by the different variants of the ω phases. Similar results were reported for β-type Ti-30Zr-5Mo, Ti-24Nb-2Zr, and Ti-19Zr-10Nb-1Fe elsewhere323334.…”

Section: Resultssupporting

confidence: 89%

Novel Ti-Ta-Hf-Zr alloys with promising mechanical properties for prospective stent applications

Lin

Ozan

et al. 2016

Sci Rep

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“…In other relevant works found in the literature [14,28], in where the authors have worked with arc melted, hot forged and quenched samples, an incremental change was obtained in the mechanical properties with Fe addition. Lee et al obtained a maximum flexure strength of 1700MPa for the Ti25Nb7Fe cast alloy [36] and Lin et al reported a tensile strength of 2450MPa for Ti7.5Mo2Fe [32].…”

Section: Discussionmentioning

confidence: 89%

“…However, the microstructure of this alloy was α + β, which provides higher strength than a complete β microstructure. Chaves et al indicated a tensile strength of 520 MPa for the Ti19Zr10Nb1Fe cast alloy, which increased to 1050 MPa when rolled [14]. Bertrand et al obtained 530MPa for tensile strength for a melted Ti25Nb25Ta alloy [37].…”

Section: Discussionmentioning

confidence: 99%

“…As these low Fe contents more strongly affect β-Ti (bcc) phase stabilization [12], the solubility of Fe in β-Ti (both bcc structures) causes simple solution strengthening, while additions above 2 wt% Fe significantly increase strength [13]. However, the significant biocompatibility of the different alloys containing Fe has been reported in numerous studies and does not sacrifice the biochemical suitability of alloys [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and the Microstructure of β Ti-35Nb-10Ta-xFe Alloys Obtained by Powder Metallurgy for Biomedical Applications

Amigó

Vicente

Afonso

et al. 2019

Metals

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Titanium alloys with high refractory metals content are required to obtain advanced biomaterials with a low elastic modulus and good mechanical properties. This work studies the influence of Fe content on the microstructure and mechanical properties of powder metallurgy Ti35Nb10Ta(Fe) alloys, with Fe content additions of 1.5, 3.0 and 4.5 wt%. Samples are obtained by uniaxial compaction and sintering at 1250 °C and 1300 °C. Microstructural characterization is performed by scanning and transmission electron microscopy and mechanical characterization by bending, compression and a hardness test. The elastic modulus is measured by the ultrasounds technique. The results show a 10% increase in the maximum bending strength with an increase in the sintering temperature. The obtained microstructure is composed of β-Ti phase (bcc) and some regions where laths of the α-Ti (hcp) phase occur along the grain boundaries. Fe addition slightly improves the stability of the β-Ti phase and conversely decreases the maximum strength and final deformability due to increased porosity. The Ti35Nb10Ta alloy composition displays better properties, with an elastic modulus of 75 GPa, a bending strength of 853 MPa and compression strength of 1000 MPa.

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“…These alloys exhibited low Young's modulus, good mechanical properties and excellent biocompatibility, showing the promise as new candidates in biomedical applications. Moreover, some of the recently developed Ti alloys such as Ti-19Zr-10Nb-1Fe [12,13] and Ti-20Zr-10Nb-4Ta [14] behaved good superelasticity and shape memory effects, and thus may challenge the Nitinol shape memory alloy in future clinical applications.…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Xue

et al. 2018

Sci. China Mater.

Self Cite

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The corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta (TZNT) alloy modified by surface laser treatment were investigated. The scanning electron microscopy (SEM) measurements indicated that laser treatment on TZNT alloy generated groove morphologies with the width of 40 μm and the depth of~10 μm on the surface. The water contact angles along the groove direction decreased by 51% compared with that of the untreated alloy. The laser treatment promoted the oxidation of metallic Ti, Zr and Nb and produced more stable oxides on surface. The corrosion potential increased by 50% and corrosion current density decreased by 72% compared with that of the untreated alloy in the anodic polarization test for the alloy in Hank's solution at 37°C. This indicated the improvement of the corrosion resistance by laser treatment. The cytotoxicity testing results showed that the laser-treated TZNT alloy performed similar MC3T3-E1 cell viability compared with the untreated alloy. The cells displayed oriented growth along the groove direction due to the increased hydrophilicity. This novel material may be a new candidate in orthopedics and dentistry implantations fields.

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Superelasticity, corrosion resistance and biocompatibility of the Ti–19Zr–10Nb–1Fe alloy

Cited by 61 publications

References 46 publications

Novel Ti-Ta-Hf-Zr alloys with promising mechanical properties for prospective stent applications

Novel Ti-Ta-Hf-Zr alloys with promising mechanical properties for prospective stent applications

Mechanical Properties and the Microstructure of β Ti-35Nb-10Ta-xFe Alloys Obtained by Powder Metallurgy for Biomedical Applications

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

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