Development of Ti–Mo alloys for biomedical applications: Microstructure and electrochemical characterization

Oliveira, Nilson T. C.; Aleixo, Giorgia Taiacol; Caram, Rubens; Guastaldi, Antônio Carlos

doi:10.1016/j.msea.2006.11.061

Cited by 169 publications

(106 citation statements)

References 19 publications

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“…These results clearly show that the crystalline structure of the Ti-Mo system is sensitive to the molybdenum composition, as mentioned in the literature. 18 It can also be observed that the diffractograms of the Ti-15Mo alloy showed peaks characteristic of a body-centered cubic structure, which is typical of these phase b alloys 8,12 and a 0 phase that has hexagonal compact crystalline structure, but this last phase is a martensitic type phase, i.e., it is a metastable phase that is formed by rapid cooling, leaving no time to accommodate a more stable structure.…”

Section: Resultsmentioning

confidence: 99%

“…2 Recently, alloy containing b phase stabilizers elements (niobium, tantalum, zirconium, and molybdenum) with lower values of Young's modulus have been considered attractive for employment as biomaterials, among which the Ti-Mo alloy systems stand out. [7][8][9][10][11][12][13] The Ti-Mo alloy systems were studied with an emphasis on their microstructure and mechanical properties, specifically on phase transformations, 10 mechanical resistance, 14 and corrosion. 15 However, there are few studies on the processing of these alloys with specific properties, the influence of thermo-mechanical treatments, and about the effect of interstitial elements on their mechanical properties.…”

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confidence: 99%

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Structural characterization of Ti-15Mo alloy used as biomaterial by Rietveld method

Martins

Grandini

2012

Journal of Applied Physics

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The biochemical and mechanical behavior of titanium alloys has been studied extensively for a variety of applications in the aerospace and biomedical fields. In the literature, there are studies that relate the microstructure and the phases of the material with its properties; however, there is little information that quantifies each phase and relates this to its properties. In addition, little has been done to analyze the effects of oxygen and heat treatment on the alloy's structure. In this paper, the effect of doping with oxygen and the effect of heat treatments on structural properties of Ti-15Mo alloy used as biomaterials is examined using scanning electron microscopy, x-ray diffraction, and diffractogram analysis using the Rietveld method. V C 2012 American Institute of Physics. [http://dx

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Structural characterization of Ti-15Mo alloy used as biomaterial by Rietveld method

Martins

Grandini

2012

Journal of Applied Physics

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“…They showed that molybdenum content of 10wt% is sufficient for to stabilize β-phase at room temperature. Also 10%Mo microstructure offers excellent ductility and strength 8 . All the titanium alloys containing 7.5-20 wt% has higher values of bending strength and Ti-10Mo has the highest (1752 MPa).…”

Section: Introductionmentioning

confidence: 99%

“…The development of non-toxic element β-type Ti alloys, such as Ti-Mo 6,8,11 , Ti-Nb [12][13][14] , Ti-Zr 15 and Ti-Ta [16][17][18] had been increased.…”

Section: Introductionmentioning

confidence: 99%

Study of the Vickers hardness and corrosion behavior of experimental Ti-Mo alloy in dental office bleaching agents

Felipe¹,

Nakazato²,

Dutra³

et al. 2017

Arch Health Invest

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At present, titanium and its alloys stand out for their mechanical and biological properties. Vickers hardness and the effect of 15%, 22% and 35% hydrogen peroxide (H2O2) on Ti-10Mo alloy corrosion were evaluated. A conventional double-walled glass cell was used for thermostatization. As reference electrode was used the Ag/AgCl (s)/KClsat and as auxiliary electrode graphite stick. The work electrodes consisted of Ti-10Mo cylinders embedded in polyethylene, with electrical contact by brass wire and silver paint on one end. The electrolyte used was H2O2 in concentrations of 15%, 22% and 35% and potentiodynamic measurements were recorded. The Vickers hardness was evaluated before the treatment using Vickers penetrator under load of 1000g and dwell time of 10s / measurement separately. The results showed an increase in the corrosion values in direct relation with the increase of the H2O2 concentration. At 35% concentration, at constant current of ~ 1.0V the alloy did not passivate, characterizing high corrosion rate. At the concentrations of 15% and 22% the results showed a tendency to pseudopassivation, with release of TiO2 and part of the product of the corrosion becoming semi-adherent to the surface of the working electrode and another part passing through the middle, characterizing intermediate corrosion velocity. It was concluded that higher H2O2concentrations produced higher electrochemical corrosion.Descriptors: Titanium; Alloys; Surface Properties; Corrosion; Tooth Bleaching Agents.

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“…Molybdenum is considered a safe alloying element and an excellent ␤-phase stabiliser. Increasing the amount of the ␤-phase leads to a decrease in the elastic modulus, an increase in the corrosion resistance and an improvement in the tissue response of Ti alloys [7][8][9]. Ti-Mo alloys exhibit low yield strength and good ductility, and they are more suitable for biomedical applications than conventional biomaterials because of their better mechanical compatibility.…”

Section: Introductionmentioning

confidence: 99%

Modification of a Ti–Mo alloy surface via plasma electrolytic oxidation in a solution containing calcium and phosphorus

Simka

Krząkała

Korotin

et al. 2013

Electrochimica Acta

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a b s t r a c tInvestigations into the surface modification of a Ti-15Mo alloy via plasma electrolytic oxidation are reported. The oxidation process was conducted in a solution containing Ca(H 2 PO 2 ) 2 , H 3 PO 4 , or (HCOO) 2 Ca. Anodisation was performed at voltages in the range of 100-400 V. The morphology of the sample surface did not change during alloy oxidation at lower voltages. Higher voltages led to the incorporation of calcium and phosphorus or of calcium only into the formed oxide layer and to significant modification of the surface morphology. Based on the SEM and EDX analysis results, a set of samples was selected for further investigations. To study the surface of the Ti-Mo alloy after anodic oxidation, we used scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), thin-layer X-ray diffraction (TL-XRD), and X-ray photoelectron spectroscopy (XPS). The electrochemical characteristics of the modified alloy in Ringer's solution were determined. Anodisation results in a considerable increase in the corrosion resistance of the Ti-15Mo alloy.

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Development of Ti–Mo alloys for biomedical applications: Microstructure and electrochemical characterization

Cited by 169 publications

References 19 publications

Structural characterization of Ti-15Mo alloy used as biomaterial by Rietveld method

Structural characterization of Ti-15Mo alloy used as biomaterial by Rietveld method

Study of the Vickers hardness and corrosion behavior of experimental Ti-Mo alloy in dental office bleaching agents

Modification of a Ti–Mo alloy surface via plasma electrolytic oxidation in a solution containing calcium and phosphorus

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