On the electropolishing and anodic oxidation of Ti-15Mo alloy

Babilas, Dorota; Urbańczyk, Ewelina; Sowa, Maciej; Maciej, Artur; Korotin, Danila M.; Zhidkov, Ivan S.; Basiaga, Marcin; Krok-Borkowicz, Małgorzata; Szyk-Warszyńska, Lilianna; Pamuła, Elżbieta; Kurmaev, E.Z.; Cholakh, S. O.; Simka, Wojciech

doi:10.1016/j.electacta.2016.01.218

Cited by 38 publications

(33 citation statements)

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“…MoO2 passive films were on the cp-Ti and Ti-Mo alloys surfaces, without unoxidized metal, the same behavior found into the Ti-15Mo which used electropolishing and anodic passivation processes described in the literature [12] .…”

Section: It Can Be Concluded That the Obtained Tio2 Andsupporting

confidence: 69%

“…The time, when the oxide film was formed on the alloy surfaces, was measured by the spontaneous process the Ti-15Mo alloy [12] .…”

Section: Open Circuit Potential (Eoc)mentioning

confidence: 99%

“…The oxide compositions formed under the Ti-Mo alloys surfaces were identified by the XPS technique, which showed the surfaces of the anodized samples containing TiO2 and MoO2 [12] . The thickness of that oxide films was also identified after the EIS.…”

Section: X-ray Electron Spectroscopy (Xps)mentioning

confidence: 99%

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Ti-Mo alloys: corrosion study in solutions simulating commercial gels

Rodrigues

Guastaldi

2018

J. Polym. Sci. Eng.

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Regarding to the influence of chloride and fluoride ions on the corrosion resistance, the electrochemical behavior of Ti alloys has been deeply studied. In this work, the main goal was to investigate the electrochemical behavior of cp-Ti and Ti-Mo alloys containing 6, 10 and 15 wt% of Mo concentrations. All the samples were immersed in different solutions, such as 0.15 mol L-1 Na2SO4, 0.15 mol L-1 Ringer, 0.15 mol L-1 Ringer plus 0.036 mol L-1 NaF and 0.036 mol L-1 NaF. Simulating the commercial fluorinated gels, the NaF solutions naturally-aerated were prepared with 1450 ppm of fluoride ions. The electrochemical techniques applied in this work were the open-circuit potential, cyclic voltammetry, besides the technique for chemical identification, which was X-ray photoelectron spectroscopy. The formation and growth of TiO2 and MoO2 were identified, without pitting corrosion. The electrochemical stability and the corrosion resistance of the Ti-Mo alloys decreased in the solutions containing chloride and fluoride ions, with an appreciative decrease especially in the fluorinated medium. The Ti-Mo alloy with higher Mo content concentration was the material with higher corrosion resistance. Therefore, it is a promising candidate as a biomaterial, once the osseointegration needs a satisfactory corrosion resistance for being achieved.

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Section: It Can Be Concluded That the Obtained Tio2 Andsupporting

confidence: 69%

“…The time, when the oxide film was formed on the alloy surfaces, was measured by the spontaneous process the Ti-15Mo alloy [12] .…”

Section: Open Circuit Potential (Eoc)mentioning

confidence: 99%

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Ti-Mo alloys: corrosion study in solutions simulating commercial gels

Rodrigues

Guastaldi

2018

J. Polym. Sci. Eng.

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“…A better understanding of the electropolishing mechanism of NiTi is important not only for this material alone but also similar binary alloys such as NiW, TiMo, or ternary. Nevertheless it should be emphasized that electropolishing is not the only step or only way to achieve better NiTi surfaces.…”

Section: Resultsmentioning

confidence: 99%

On the Electropolishing Mechanism of Nickel Titanium in Methanolic Sulfuric acid − An Electrochemical Impedance Study

Fushimi

Neelakantan

Eggeler

et al. 2018

Physica Status Solidi (a)

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Electropolishing of NiTi shape memory alloys is possible in methanolic 3 M H 2 SO 4 . The electro-dissolution behavior of NiTi in methanolic 3 M H 2 SO 4 is ascertained in terms of Nyquist plots using electrochemical impedance spectroscopy (EIS) under limiting current flow (mass transfer control) condition. The electro-dissolution behavior is studied under convective conditions using a rotating disc electrode. The influence of changes in rotation rate, applied potential, and temperature are determined. This study demonstrates that electro-dissolution under mass transfer condition follows a compact salt-film mechanism. In order to quantitatively characterize the salt film formed during electropolishing, EIS is performed under stationary conditions. The increase in applied voltage causes an increase in polarization resistance and decrease in capacitance of the interface film.

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“…So far, several surface modification methods have been employed to activate the Ti-Mo alloys, such as thermal oxidation [18], plasma electrolytic oxidation [34,35], anodic oxidation [36,37] and alkaliheat treatment [10,11,21,38,39]. Among these processes, the alkali-heat treatment proposed by Kokubo's team [40] is a cost-effective and efficient way to induce apatite layer formation on the Ti-based alloys substrate.…”

Section: Introductionmentioning

confidence: 99%

Preparation and bioactive surface modification of the microwave sintered porous Ti-15Mo alloys for biomedical application

Zhang

Bao

et al. 2017

Sci. China Mater.

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Biomedical porous Ti-15Mo alloys were prepared by microwave sintering using ammonium hydrogen carbonate (NH 4 HCO 3 ) as the space holder agent to adjust the porosity and mechanical properties. The porous Ti-15Mo alloys are dominated by β-Ti phase with a little α-Ti phase, and the proportion of α and β phase has no significant difference as the NH 4 HCO 3 content increases. The porosities and the average pore sizes of the porous Ti-15Mo alloys increase with increase of the contents of NH 4 HCO 3 , while all of the compressive strength, elastic modulus and bending strength decrease. However, the compressive strength, bending strength and the elastic modulus are higher or close to those of natural bone. The surface of the porous Ti-15Mo alloy was further modified by hydrothermal treatment, after which Na 2 Ti 6 O 13 layers with needle and flake-like clusters were formed on the outer and inner surface of the porous Ti-15Mo alloy. The hydrothermally treated porous Ti-15Mo alloy is completely covered by the Ca-deficient apatite layers after immersed in SBF solution for 14 d, indicating that it possesses high apatiteforming ability and bioactivity. These results demonstrate that the hydrothermally treated microwave sintered porous Ti15Mo alloys could be a promising candidate as the bone implant.

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On the electropolishing and anodic oxidation of Ti-15Mo alloy

Cited by 38 publications

References 50 publications

Ti-Mo alloys: corrosion study in solutions simulating commercial gels

Ti-Mo alloys: corrosion study in solutions simulating commercial gels

On the Electropolishing Mechanism of Nickel Titanium in Methanolic Sulfuric acid − An Electrochemical Impedance Study

Preparation and bioactive surface modification of the microwave sintered porous Ti-15Mo alloys for biomedical application

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