Powder metallurgy of the porous Ti-13Nb-13Zr alloy of different powder grain size

Seramak, Tomasz; Zieliński, Andrzej; Serbiński, W.; Zasińska, Katarzyna

doi:10.1080/10426914.2019.1605178

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…TNZ alloy was produced by powder metallurgy, and depending on the parameters, 30% porosity was formed without using salt. The elasticity modulus of this sample was determined as approximately 11.5 GPa after the compression test [31]. The results show that the material strengths are significantly reduced depending on the porosity.…”

Section: Resultsmentioning

confidence: 99%

The effect of porosity on the mechanical properties of Ti–8Nb–8Zr–8Cu alloy

Demirtaş

2022

Materials Science and Technology

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The present study investigated the mechanical performance of Ti–8Nb–8Zr–8Cu (at.-%) alloys containing different porosity levels. Metallographic examination and phase analysis of samples was performed by scanning electron microscope (SEM), optical microscopy (OM), energy dispersive spectrometry (EDS) and X-ray diffraction (XRD) measurements. The mechanical properties were detected by uniaxial compression test, micro and macro hardness measurements. The wear behaviour was determined by a dry wear test on the bulk sample. The ultimate compressive strength decreased from 1077.30 to 344.65 MPa with 50% porosity and the modulus of elasticity from 15.6 to 9.5 GPa. These values show that it may be suitable for bone replacement considering the stress shield effect.

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Section: Resultsmentioning

confidence: 99%

The effect of porosity on the mechanical properties of Ti–8Nb–8Zr–8Cu alloy

Demirtaş

2022

Materials Science and Technology

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“…Currently, the most common titanium alloys for biomedical applications include the Ti-13Nb-13Zr alloy [9][10][11][12][13][14]. The superiority of the willingness to use Ti-13Nb-13Zr alloy includes the fact that there is less release of metal ions during the spontaneous passivation of Ti-13Nb-13Zr because the corrosion products of the smaller alloy elements Nb and Zr are less soluble than Al and V. In addition, the native oxide layer on the alloy surface reveals higher resistance to corrosion and provides better protection for the underlying alloy [4,[13][14][15][16][17]. The combination of the three most biocompatible elements, i.e., titanium, niobium, and zirconium, that do not show toxic or carcinogenic reactions with tissue and cells, allowed this alloy to be classified as the most promising material for bone implants [8,18].…”

Section: Introductionmentioning

confidence: 99%

Biological Activity and Thrombogenic Properties of Oxide Nanotubes on the Ti-13Nb-13Zr Biomedical Alloy

Stróż

Gawlikowski

Balin

et al. 2023

JFB

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The success of implant treatment is dependent on the osseointegration of the implant. The main goal of this work was to improve the biofunctionality of the Ti-13Nb-13Zr implant alloy by the production of oxide nanotubes (ONTs) layers for better anchoring in the bone and use as an intelligent carrier in drug delivery systems. Anodization of the Ti-13Nb-13Zr alloy was carried out in 0.5% HF, 1 M (NH4)2SO4 + 2% NH4F, and 1 M ethylene glycol + 4 wt.% NH4F electrolytes. Physicochemical characteristics of ONTs were performed by high-resolution electron microscopy (HREM), X-ray photoelectron spectroscopy (XPS), and scanning Kelvin probe (SKP). Water contact angle studies were conducted using the sitting airdrop method. In vitro biological properties and release kinetics of ibuprofen were investigated. The results of TEM and XPS studies confirmed the formation of the single-walled ONTs of three generations on the bi-phase (α + β) Ti-13Nb-13Zr alloy. The ONTs were composed of oxides of the alloying elements. The proposed surface modification method ensured good hemolytic properties, no cytotoxity for L-929 mouse cells, good adhesion, increased surface wettability, and improved athrombogenic properties of the Ti-13Nb-13Zr alloy. Nanotubular surfaces allowed ibuprofen to be released from the polymer matrix according to the Gallagher–Corrigan model.

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