Corrosion resistance and biocompatibility of Ti–Ta alloys for biomedical applications

Zhou, Ying; Niinomi, Mitsuo; Akahori, Toshikazu; Fukui, Hisao; Toda, Hiroyuki

doi:10.1016/j.msea.2005.03.032

Cited by 274 publications

(152 citation statements)

References 46 publications

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“…The more conventional metallic materials used as orthopedic implants are: stainless steel, Co-Cr alloys and commercially pure Ti (cp) and its alloys. In this last class, the most widely used is the Ti-6Al-4V alloy 10 . The literature indicates that long term health problems would be associated with the release of Al and V ions from the Ti-6Al-4V metallic implants into the human body.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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Beta titanium alloys were developed for biomedical applications due to the combination of its mechanical properties including low elasticity modulus, high strength, fatigue resistance, good ductility and with excellent corrosion resistance. With this perspective a metastable beta titanium alloy Ti-12Mo-13Nb was developed with the replacement of both vanadium and aluminum from the traditional alloy Ti-6Al-4V. This paper presents the microstructure, mechanical properties of the Ti12Mo-13Nb hot swaged and aged at 500 o C for 24 h under high vacuum and then water quenched. The alloy structure was characterized by X-ray diffraction and transmission electron microscopy. Tensile tests were carried out at room temperature. The results show a microstructure consisting of a fine dispersed α phase in a β matrix and good mechanical properties including low elastic modulus. The results indicate that Ti-12Mo-13Nb alloy can be a promising alternative for biomedical application.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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“…The passive current density was around 1.3 x 10 -5 A/cm² in both conditions indicating formation and growth of a stable oxide on the alloy. The current density in the passive region of Ti30Ta alloy was lower when compared to the other materials used for the manufacture of implants, as pure titanium 21,22 , that it has a passive current density around 1.66 x 10 -4 A/ cm², Figure 4, indicating that the oxide films formed on the surface, Ta 2 O 5 , is more corrosion resistant 11,23 . In Figure 3, it is possible to observe that the start of the dissolution of Ta 2 O 5 oxide occurs in the potential above 2.5 V due to the stronger and more stable passive film.…”

Section: Figure 1 Optical Micrograph Of the Ti-30ta Alloy (A) Withoumentioning

confidence: 97%

“…When the current density measured by polarization testing is low, the corrosion resistance of an alloy is excellent 11,20 . Corrosion behavior of an alloy depends on the environment where it is exposed, temperature and velocity, but it is mainly decided by its chemical composition and the crystal structure has little influence on the corrosion resistance of an alloy 11 . These results confirmed the negative influence of deformation on the electrochemical behavior of Ti30Ta alloy deformed and without deformation.…”

Section: Figure 1 Optical Micrograph Of the Ti-30ta Alloy (A) Withoumentioning

confidence: 99%

“…Elements such as niobium (Nb), zirconium (Zr), molybdenum (Mo) and tantalum (Ta) are strong candidates since they allow the reduction of alloy is elastic modulus reaching values closer that of the bone (10-40 GPa) [3][4][5][6][7][8][9][10] . In particular, the Ti-30Ta alloy with α'' phase (martensite) has been shown as viable for applications in the manufacture of prostheses due to its excellent corrosion resistance and differentiated combination of low elastic modulus and high mechanical strength 5,11,12 . The selection of a material to be used in the manufacture of orthopedic implants implies meeting a number of requirements, especially in relation to mechanical strength…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Resistance After Mechanical Deformation of the Ti30Ta Experimental Alloy for Using in Biomedical Applications

et al. 2017

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In this study the corrosion resistance of Ti30Ta experimental alloy was evaluated when submitted to different deformation rates. Alloys were processed in arc melting, furnace, forged and treated. The samples were machined in accordance with ASTME9-09 standard to carry out compression tests. The influence of deformation was evaluated by optical microscopy and XRD, and Eletrochemical parameters were analyzed in the most severe condition of deformation (22%). Corrosion resistance exhibited the same behavior for two conditions, 22% and without deformation.

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“…Zhou et al [9] studied the influence of tantalum on the corrosion resistance of Ti-based alloys in great detail. The studied materials included pure titanium, Ti6Al4V and Ti 1−x Ta x (x = 10, 30 and 70 at.%).…”

Section: Introductionmentioning

confidence: 99%

Tantalum effect on the corrosion behavior of titanium-tantalum alloys in an environment containing fluoride ions

Fojt¹,

Joska²,

Hnilica³

2013

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Titanium exhibits high corrosion resistance in biological environments. The main objective of its alloying with beta-stabilizing elements is to decrease modulus of elasticity. It is important to preserve corrosion resistance. The presented study was aimed at corrosion properties of Ti15Ta and Ti30Ta alloys in comparison with titanium. Measurements were performed on titanium, both alloys and tantalum in the physiological solution without or with fluoride ions. Electrochemical study was based on electrochemical impedance spectroscopy. Corrosion behavior of the studied alloys was significantly influenced by titanium. In the physiological solution, both alloys displayed stable passivity. Titanium is highly sensitive to the presence of fluoride ions. Its alloying with tantalum had a positive effect under the given conditions, which applied particularly to the Ti30Ta alloy. Titanium-tantalum binary alloys are not considered for direct use, yet the knowledge of their behavior may contribute to a more rational design of alloy systems applicable in dental practice.K e y w o r d s : Ti-Ta alloys, corrosion, fluoride ions, surface analysis, impedance spectroscopy

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Corrosion resistance and biocompatibility of Ti–Ta alloys for biomedical applications

Cited by 274 publications

References 46 publications

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

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

Corrosion Resistance After Mechanical Deformation of the Ti30Ta Experimental Alloy for Using in Biomedical Applications

Tantalum effect on the corrosion behavior of titanium-tantalum alloys in an environment containing fluoride ions

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