Microstructure and dry wear properties of Ti-Nb alloys for dental prostheses

Xu, Lijuan; Xiao, Shulong; Tian, Jing; Chen, Yuyong; Huang, Yudong

doi:10.1016/s1003-6326(10)60124-0

Cited by 37 publications

(8 citation statements)

References 16 publications

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“…Microstructures of the obtained samples were compared with Ti-Nb samples produced by casting [47][48][49][50]. The main difference between Ti-Nb alloys produced by casting and PM was that β phase seemed more homogeneous for PM alloys and α" phase formed during cooling for cast-alloys was not observed in PM alloys.…”

Section: Microstructure Evolution During the Tih 2 Decompositionmentioning

confidence: 99%

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Chirico

Tsipas

Wilczynski

et al. 2020

Metals

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The use of titanium hydride as a raw material has been an attractive alternative for the production of titanium components produced by powder metallurgy, due to increased densification of Ti compacts, greater control of contamination and cost reduction of the raw materials. However, a significant amount of hydrogen that often remains on the samples could generate degradation of the mechanical properties. Therefore, understanding decomposition mechanisms is essential to promote the components’ long life. Several studies on titanium hydride (TiH2) decomposition have been developed; nevertheless, few studies focus on the effect of the alloying elements on the dehydrogenation process. In this work, the effects of the addition of different amounts of Fe (5 and 7 wt. %) and Nb (12, 25, and 40 wt. %) as alloying elements were evaluated in detail. Results suggest that α→β transformation of Ti occurs below 800 °C; β phase can be observed at lower temperature than the expected according to the phase diagram. It was found that β phase transformation could take place during the intermediate stage of dehydrogenation. A mechanism was proposed for the effect of allying elements on the dehydrogenation process.

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Section: Microstructure Evolution During the Tih 2 Decompositionmentioning

confidence: 99%

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Chirico

Tsipas

Wilczynski

et al. 2020

Metals

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“…Niobium increases the hardness of the alloy and decreases the compression modulus. Content of niobium influenced also compression strength and wear resistance [17]. Niobium forms also isomorphous phase with titanium providing good Ti(β) stabilizing effect and appearance of this phase at room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…The biocompatibility of niobium was also concerned to be higher than titanium [10]. Ti-Zr [11][12][13][14][15] and Ti-Nb systems [16][17][18][19][20][21] were already examined in several articles. It was reported that Ti-Zr alloys can improve biocompatibility properties of pure titanium, their mechanical strength and grind ability [13,14].…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure Evolution, Microstructure Formation, and Properties of Mechanically Alloyed Ultrafine-Grained Ti-Zr-Nb Alloys at 36≤Ti≤70 (at. %)

et al. 2020

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Titanium β-type alloys are preferred biomaterials for hard tissue replacements due to the low Young modulus and limitation of harmful aluminum and vanadium present in the commercially available Ti6Al4V alloy. The aim of this study was to develop a new ternary Ti-Zr-Nb system at 36≤Ti≤70 (at. %). The technical viability of preparing Ti-Zr-Nb alloys by high-energy ball-milling in a SPEX 8000 mill has been studied. These materials were prepared by the combination of mechanical alloying and powder metallurgy approach with cold powder compaction and sintering. Changes in the crystal structure as a function of the milling time were investigated using X-ray diffraction. Our study has shown that mechanical alloying supported by cold pressing and sintering at the temperature below α→β transus (600°C) can be applied to synthesize single-phase, ultrafine-grained, bulk Ti(β)-type Ti30Zr17Nb, Ti23Zr25Nb, Ti30Zr26Nb, Ti22Zr34Nb, and Ti30Zr34Nb alloys. Alloys with lower content of Zr and Nb need higher sintering temperatures to have them fully recrystallized. The properties of developed materials are also engrossing in terms of their biomedical use with Young modulus significantly lower than that of pure titanium.

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“…Since Ti and Nb are non-toxic elements, the Ti-Nb binary alloys exhibit excellent biocompatibility. In particular, the Ti-40Nb and Ti-45Nb alloys demonstrate a good combination of Young's (elasticity) modulus, corrosion resistance, and biocompatibility [22][23][24][25]. The elasticity modulus of titanium and medium-strength titanium alloys is in the range of 100-120 GPa, thus significantly exceeding Young's modulus of the bone tissue.…”

Section: Introductionmentioning

confidence: 99%

Development of Ultrafine–Grained and Nanostructured Bioinert Alloys Based on Titanium, Zirconium and Niobium and Their Microstructure, Mechanical and Biological Properties

Sharkeev

Eroshenko

Легостаева

et al. 2022

Metals

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For this paper, studies of the microstructure as well as the mechanical and biological properties of bioinert titanium, zirconium, and niobium alloys in their nanostructured (NS) and ultrafine-grained (UFG) states have been completed. The NS and UFG states were formed by a combined two-step method of severe plastic deformation (SPD), first with multidirectional forging (MDF) or pressing into a symmetrical channel (PSC) at a given temperature regime, and then subsequent multi-pass groove rolling (MPGR) at room temperature, with pre-recrystallization annealing. Annealing increased the plasticity of the alloys in the NS and UFG states without changing the grain size. The UFG structure, with an average size of structural elements of no more than 0.3 μm, was formed as a result of applying two-step SPD and annealing. This structure presented significant improvement in the mechanical characteristics of the alloys, in comparison with the alloys in the coarse-grained (CG) or small-grained (SG) states. At the same time, although the formation of the UFG structure leads to a significant increase in the yield strength and tensile strength of the alloys, their elastic modulus did not change. In terms of biocompatibility, the cultivation of MG-63 osteosarcoma cells on the polished and sandblasted substrates demonstrated high cell viability after 10 days and good cell adhesion to the surface.

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Microstructure and dry wear properties of Ti-Nb alloys for dental prostheses

Cited by 37 publications

References 16 publications

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Beta Titanium Alloys Produced from Titanium Hydride: Effect of Alloying Elements on Titanium Hydride Decomposition

Crystal Structure Evolution, Microstructure Formation, and Properties of Mechanically Alloyed Ultrafine-Grained Ti-Zr-Nb Alloys at 36≤Ti≤70 (at. %)

Development of Ultrafine–Grained and Nanostructured Bioinert Alloys Based on Titanium, Zirconium and Niobium and Their Microstructure, Mechanical and Biological Properties

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