Electrochemical corrosion behavior and elasticity properties of Ti–6Al–xFe alloys for biomedical applications

Lu, Jiping; Zhao, Yongqing; Niu, H.Z.; Zhang, Yusheng; Du, Yuzhou; Zhang, Wei; Huo, Wangtu

doi:10.1016/j.msec.2016.01.019

Cited by 57 publications

(34 citation statements)

References 46 publications

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“…Electrochemical and bioactivity measurement.-The corrosion resistance of the Ti-35Nb-7Zr-CPP composites were evaluated by the potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) through SP-300 electrochemical measurement system (Bio-logic SAS Co., France) in simulated physiological solution (Hank's solution), 27,28 A saturated calomel electrode (SCE) was adopted as the reference electrode and a platinum piece as the counter electrode. The polarization scan was carried out at a rate of 1 mVs −1 .…”

Section: Methodsmentioning

confidence: 99%

Electrochemical Behavior in Simulated Physiological Solution of Ti-Nb-Zr-Calcium Pyrophosphate Composite with Enhanced Bioactivity by Spark Plasma Sintering

Zhang

Zhao

Tan

et al. 2018

J. Electrochem. Soc.

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The potential biomedical application near β-type Ti-35Nb-7Zr alloy with different CPP ceramic additions were evaluated in vitro using electrochemical method and osteoblasts co-cultured. A small amount addition of calcium pyrophosphate (CPP) ceramic induced the formation of oxide film on the surface of the composites that can withstand passive layer breakdown and the onset of localized forms of corrosion. But localized breakdown of the oxide layer occurred on composites as the CPP exceeded 20 wt%. Ti-35Nb-7Zr-10CPP exhibits a wide passive range in the polarization curve and gets a higher potential for inducing growth of bone-like apatite and proliferation of osteoblasts on its surface compared to that of the Ti-35Nb-7Zr, CP Ti and Ti6Al4V (TC4) alloys. The favorable cell viability and growth inside the pores of the composites arise from the rough micro-porous surface and the release of bioactive metal-ceramic phase ions into the physiological environment. Novel near β-type Ti-Nb-based alloys have attracted considerable attention for human bone implants due to their good mechanical properties, high corrosion resistance and low toxicity.1-3 Based on the Ti-Nb binary system, several near β-type Ti alloy containing nontoxic elements (Ta, Zr, Mo and Sn) have recently been developed for biomaterials. [4][5][6][7] Among them, Zr received renewed attention for surgical implants because it shows acceptable mechanical strength, satisfactory biocompatibility and corrosion resistance. In addition, Zr is a neutral element when dissolved in Ti and it can improve the strength. Zr-containing Ti alloys have been developed for commercial biomaterials. [8][9][10][11][12] It is reported that the elastic modulus of a near β-type Ti-Nb-Zr alloy at room temperature are about 40-55 GPa if the alloy composition and heat-treatment conditions are optimized. 10,13,14 This value is close to the elastic modulus of human bones (10-30 GPa) and it is conducive to reducing the stress shielding between natural bones and implants.15 Thus, β-type Ti-Nb-Zr alloys are considered to be one of the most promising alloys for biomedical applications. However, the osseointegration property of Ti-Nb-Zr alloys, which is necessary to promote bone tissue compatibility, is poorer than bio-ceramic materials because they are bio-inert. [15][16][17] Calcium pyrophosphate (Ca 2 P 2 O 7 , CPP) 18,19 is a bioactive ceramic material that has recently attracted wide attention in clinical orthopedic and bone repaired implants due to its similar chemical and crystallographic structure to natural bone apatite mineral. Maeda et al. 20 fabricated a CPP-Nb glass-ceramic, which mainly consisted of α-Ca 2 P 2 O 7 , β-Ca 2 P 2 O 7 and Nb 2 O 5 phases. In vitro tests revealed that CPP ceramic could significantly induce the formation and growth of bone-like apatite on the surface of the material. According to a research work from Lin et al., 21 a porous CPP-5 wt% Na 4 P 2 O 7 •10H 2 O ceramic was fabricated by powder sintering, and was implanted into New Zealand Rabbits. The vivo ...

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Section: Methodsmentioning

confidence: 99%

Electrochemical Behavior in Simulated Physiological Solution of Ti-Nb-Zr-Calcium Pyrophosphate Composite with Enhanced Bioactivity by Spark Plasma Sintering

Zhang

Zhao

Tan

et al. 2018

J. Electrochem. Soc.

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“…EDS analysis was conducted to investigate the composition of α and β phases of the tested alloys, and the results are shown in Table 2. It is reported that Fe, Mo, and V atoms have long been recognized as strong β-stabilizing elements [19,22,27], thus the atomic ratio of these elements in β phase is higher than that in α phase. This is mainly due to the higher element solid solubility and elemental diffusion rate in the β phase [27,28].…”

Section: Microstructure Characterizationmentioning

confidence: 99%

“…It is reported that the Ti-4.5Al-3V-2Mo-2Fe alloy has superior mechanical properties to the Ti-6Al-4V alloy [17] due to its microstructural characteristics and element alloying (i.e., Mo and Fe). Lu et al [22] investigated the mechanical properties and electrochemical corrosion behaviors of Ti-6Al, Ti-6Al-4V, and Ti-6Al-xFe alloys, and found that the Ti-6Al-4Fe alloy possessed the lowest Young's modulus and exhibits the highest strength:modulus ratios, and the Ti-6Al-xFe alloys exhibited a higher corrosion resistance in simulated human body fluid (SBF) than both the Ti-6Al and Ti-6Al-4V alloys. However, the corrosion resistance of the Ti-6Al-xFe alloys decreased with the increasing Fe content, suggesting that the content of Fe added into the titanium alloys needed to be controlled at a lower level to achieve a better corrosion performance.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Tensile Behaviors of Ti-4Al-2V-1Mo-1Fe and Ti-6Al-4V Titanium Alloys

Qiao

Wang

et al. 2019

Metals

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X-ray diffraction (XRD), scanning electron microscope (SEM), immersion, electrochemical, and tensile tests were employed to analyze the phase constitution, microstructure, corrosion behaviors, and tensile properties of a Ti-6Al-4V alloy and a newly-developed low cost titanium alloy Ti-4Al-2V-1Mo-1Fe. The results showed that both the Ti-6Al-4V and Ti-4Al-2V-1Mo-1Fe alloys were composed of α and β phases. The volume fractions of β phase for these two alloys were 7.4% and 47.3%, respectively. The mass losses after 180-day immersion tests in 3.5 wt.% NaCl solution of these alloys were negligible. The corrosion resistance of the Ti-4Al-2V-1Mo-1Fe alloy was higher than that of the Ti-6Al-4V alloy. The tensile tests showed that the Ti-4Al-2V-1Mo-1Fe alloy presented a slightly higher strength but a lower ductility compared to the Ti-6Al-4V alloy.

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“…Considering that Fe is one of the most effective β-phase stabilizer while still being a low-cost alloying element [5,6], it stands out as potential replacement for high cost vanadium that could deliver the high demanding properties that aeronautical, biomedical, and transport applications [5][6][7] require from commercial Ti alloys. In order to preserve the performance of commercial alloys while reducing the production cost, it has been reported that Al and Cr may produce an enhancement in corrosion and oxidation resistance [8][9][10][11][12]. However, oxidation and corrosion behavior studies of PM Ti alloys are uncommon and the introduction of sintering enhancement elements like iron has been focused on mechanical properties [6,13], with a lack of appropriate studies to evaluate the corrosion and oxidation resistance of Ti-Fe alloys [14,15].…”

Section: Introductionmentioning

confidence: 99%

Oxidation and Corrosion Behavior of New Low-Cost Ti-7Fe-3Al and Ti-7Fe-5Cr Alloys from Titanium Hydride Powders

Reverte

Tsipas

Gordo

2020

Metals

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High production costs of Ti alloys usually hinders their use in industry sectors like the automotive and hence, low-cost titanium alloys could broaden titanium alloy usage. This work presents the study of three alloys-Ti-Fe, Ti-Fe-Al, and Ti-Fe-Cr-produced by powder metallurgy methods. The design of the compositions was aimed at reducing cost and enhance the oxidation and corrosion resistance while not decreasing the mechanical performance. The use of titanium hydride as raw material instead of Ti powder is highlighted as a key feature in the design and manufacturing procedure of the alloys. Introducing a dehydrogenation process during sintering favors the densification process while reducing the oxygen contamination and the production cost. There is a lack of studies focused on the implementation of affordable PM Ti alloys in high demanding environments. Therefore, a study of high temperature oxidation resistance and electrochemical behavior was performed.

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Electrochemical corrosion behavior and elasticity properties of Ti–6Al–xFe alloys for biomedical applications

Cited by 57 publications

References 46 publications

Electrochemical Behavior in Simulated Physiological Solution of Ti-Nb-Zr-Calcium Pyrophosphate Composite with Enhanced Bioactivity by Spark Plasma Sintering

Electrochemical Behavior in Simulated Physiological Solution of Ti-Nb-Zr-Calcium Pyrophosphate Composite with Enhanced Bioactivity by Spark Plasma Sintering

Corrosion and Tensile Behaviors of Ti-4Al-2V-1Mo-1Fe and Ti-6Al-4V Titanium Alloys

Oxidation and Corrosion Behavior of New Low-Cost Ti-7Fe-3Al and Ti-7Fe-5Cr Alloys from Titanium Hydride Powders

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