Microstructural and mechanical characterization of biomedical Ti–Nb–Zr(–Ta) alloys

Elias, L.M.; Schneider, S.; Silva, H.M.; Malvisi, F.

doi:10.1016/j.msea.2006.06.013

Cited by 151 publications

(57 citation statements)

References 11 publications

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“…The well-known embrittling effects of the w phase and the probable difficulty of dislocation motion through the w phase may qualitatively account for the macroscopic brittle characteristics of the 1Mo alloy. A comparison of mechanical properties between the 5Mo alloy in present work and other recently reported b-titanium alloys [18,[44][45][46][47] has been displayed, Figure 7. The ascast 5Mo alloy shows superior tensile strength and comparable elongation.…”

Section: Resultsmentioning

confidence: 76%

Microstructures and mechanical properties of as‐cast titanium–zirconium–molybdenum ternary alloys

Yang

Wang

Shi

et al. 2018

Materialwissenschaft Werkst

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In this study titanium-zirconium-molybdenum alloys (Ti 50 Zr 50 ) 100-x Mo x (xMo; x = 0 at.%, 1 at.%, 3 at.%, 5 at.% or 7 at.%) were investigated, focusing on the effect of molybdenum addition on their microstructures and mechanical properties. Transmission electron microscopy observations revealed that the binary Ti 50 Zr 50 alloy was composed entirely of an acicular hexagonal structure of the a' phase. When the molybdenum content was 1 at.%, the alloy was composed of b and w phases. However, when 3 at.% or more molybdenum was added, only the equiaxed, retained b phase was observed. Tensile tests at room temperature indicated that the mechanical properties of the 1Mo alloy were inferior owing to the embrittlement effects of the w phase and the difficulty of dislocation motion through the w phase. Our research suggested that the 5Mo alloy had excellent ductility (16.5 %) as well as adequate strength (780 MPa). The improved mechanical properties were attributed to the enhanced stability of the b phase and the disappearance of the w phase.

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Section: Resultsmentioning

confidence: 76%

Microstructures and mechanical properties of as‐cast titanium–zirconium–molybdenum ternary alloys

Yang

Wang

Shi

et al. 2018

Materialwissenschaft Werkst

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“…4) 이러한 문제점을 극복하기 위하여 Nb, Zr, Ta, Sn 그리고 Mo 등과 같은 무독성 원소를 사용한 Ti 합금의 개발이 진행되고 있다. [5][6] 또한 Ti-6Al-4V ELI 합금보다 낮은 영률과 높은 압축 강도를 얻을 수 있는 β-titanium합금도 연구되고 있다. [7][8][9][10][11] HA는 인간의 뼈와 치아를 구성하는 무기물질과 생물 학적, 화학적으로 매우 유사하다고 알려져 있다.…”

Section: 서 론unclassified

Mechanical Properties and Bio-Compatibility of Ti-Nb-Zr-HA Biomaterial Fabricated by Rapid Sintering Using HEMM Powders

Park¹,

Woo²,

Kim³

et al. 2011

Korean. J. Mater. Res.

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Ti-6Al-4V ELI (Extra Low Interstitial) alloy has been widely used as an alternative to bone due to its excellent biocompatibility. However, it still has many problems, including a high elastic modulus and toxicity. Therefore, nontoxic biomaterials with a low elastic modulus should be developed. However, the fabrication of a uniform coating is challenging. Moreover, the coating layer on Ti and Ti alloy substrates can be peeled off after implantation. To overcome these problems, it is necessary to produce bulk Ti and Ti alloy with hydroxyapatite (HA) composites. In this study, Ti, Nb, and Zr powders, which are biocompatible elements, were milled in a mixing machine (24h) and by planetary mechanical ball milling (1h, 4h, and 6h), respectively. Ti-35%Nb-7%Zr and Ti-35%Nb-7%Zr-10%HA composites were fabricated by spark plasma sintering (SPS) at 1000 o C under 70MPa using mixed and milled powders. The effects of HA addition and milling time on the biocompatibility and physical and mechanical properties of the Ti-35%Nb-7%Zr-(10%HA) alloys have been investigated. Ti 2 O, CaO, CaTiO 3 , and Ti x P y phases were formed by chemical reaction during sintering. Vickers hardness of the sintered composites increases with increased milling time and by the addition of HA. The biocompatibilty of the HA added Ti-Nb-Zr alloys was improved, but the sintering ability was decreased.Key words biomaterial, hydroxyapatite, powder metallurgy, SPS, sintering. 서 론Ti

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“…It has been shown that the addition of Mo, Ta, and Nb to Ti can enhance the tensile strength of the alloyed material and reduce its Young's modulus [19][20][21][22]. In fact, the addition of different elements can enhance specific properties of the material.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Properties and Corrosion Resistance of the Newly Developed Biomaterial, Ti–12Nb–1Ag Alloy

Chao

Chiu

et al. 2017

Metals

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Currently, the development of biomaterials has focused on having a low Young's modulus, biocompatibility, corrosion resistance, and antibacterial properties. Ti-Nb alloys have higher research value due to their excellent corrosion resistance and low Young's modulus. In recent years, the antibacterial properties of materials have been enhanced by the addition of Ag and Cu. Therefore, the corrosion resistance and antibacterial properties of the Ti-12Nb-1Ag alloy formulated in the current study were investigated and compared to those of commonly used Ti alloys, G2 pure Ti (ASTM B348 CP Grade 2), and Ti-6Al-4V, via electrochemical and E. coli antibacterial tests. Meanwhile, we also carried out a microstructural analysis to investigate the composition of the alloy. The results were as follows: (1) The electrochemical test demonstrated that Ti-12Nb-1Ag had a higher corrosion resistance than Ti-6Al-4V, which is similar to the properties of pure Ti. (2) The E. coli antibacterial test demonstrated that the sterilization rate of Ti-12Nb-1Ag was higher than that of the Ti-6Al-4V alloy and pure Ti. (3) The microstructural analysis revealed that Ti-12Nb-1Ag had an acicular martensite structure, with nano-Ag precipitates observed. Based on the results of the E. coli antibacterial test and the principles of sterilization of nano-precipitates and Ag, we inferred that the nano-Ag precipitates of Ti-12Nb-1Ag enhanced the antibacterial properties of the newly developed biomaterial, which is, namely, the Ti-12Nb-1Ag alloy.

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Microstructural and mechanical characterization of biomedical Ti–Nb–Zr(–Ta) alloys

Cited by 151 publications

References 11 publications

Microstructures and mechanical properties of as‐cast titanium–zirconium–molybdenum ternary alloys

Microstructures and mechanical properties of as‐cast titanium–zirconium–molybdenum ternary alloys

Mechanical Properties and Bio-Compatibility of Ti-Nb-Zr-HA Biomaterial Fabricated by Rapid Sintering Using HEMM Powders

Antibacterial Properties and Corrosion Resistance of the Newly Developed Biomaterial, Ti–12Nb–1Ag Alloy

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