Influence of fluoride content on the barrier layer formation and titanium dissolution in ethylene glycol–water electrolytes

Stancheva, Mina; Bojinov, Martin

doi:10.1016/j.electacta.2012.05.093

Cited by 69 publications

(47 citation statements)

References 53 publications

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“…Fluorine and phosphorus at binding energies 684.8 and 134.1 eV corresponding to F(‐I) and P(V) were detected. The presence of fluorides in the nanostructure is in good agreement with the literature .…”

Section: Resultssupporting

confidence: 90%

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Fojt

Hybášek

Joska

2016

Materials & Corrosion

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Titanium β‐alloys are perspective material for orthopaedic implants. Their bioactivity could be increased by surface nanostructuring. The nanotubular surface on the Ti‐35Nb‐2Zr alloy was prepared by anodic oxidation. The surfaces were characterised by electron microscopy and photoelectron spectroscopy. The electrochemical behaviour was determined by impedance spectroscopy and Mott–Schottky measurement. The surface analysis indicates enrichment of the oxidic layer by niobium. Nanotubular oxide layer behaviour in phosphate‐buffered solution was compared with native passive oxides surface and with thick oxide layer. The results of impedance measurement on the nanotubes were strongly affected by oxygen in the test solution. The corrosion resistance of the nanostructure was higher than that of the native passive layer. In the terms of the corrosion behaviour, the nanostructuring seems to be a promising surface treatment for medical applications.

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Section: Resultssupporting

confidence: 90%

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Fojt

Hybášek

Joska

2016

Materials & Corrosion

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“…The peak can be approximately identified at 685.3 eV, which can be interpreted as TiF 6 2À [22]. This phenomenon is in good agreement with the reference and suggests that the fluoride ion has penetrated into the film by interaction with titanium oxides (reaction (14)) [21]. Moreover, the existence of F element in the outer layer of the film indicates that the film on the surface does form in the solution during immersion rather than in air during the time interval between the polarization and XPS tests.…”

Section: Xps Analysessupporting

confidence: 65%

“…12. As can be seen, E m decreases linearly with pH through the entire pH test range, and the following result is obtained by fitting: @E m @pH ¼ À85mV=pH (21) which is in line with the references [8,16].…”

Section: Anodic Parametersmentioning

confidence: 61%

“…Substituting Eq. (7), (8), (15), (19), (21) and b c % 180 mV in Eq. (2), the value of @pF/@pH turns out to be À0.13, which is in agreement with the experimental value of À0.17.…”

Section: Calculation and Explanation Of The Ph-related Critical Fluormentioning

confidence: 99%

“…4. The fluoride ion dissolves the compact protective passive film of titanium resulting in a porous non-protective film by the following mechanism [15,21]:…”

Section: Anodic Parametersmentioning

confidence: 99%

See 2 more Smart Citations

Determination and explanation of the pH-related critical fluoride concentration of pure titanium in acidic solutions using electrochemical methods

Wang

Zheng

2015

Electrochimica Acta

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Leaching of Ti and V from the non‐magnetic fraction of ilmenite‐based ore: Kinetic and thermodynamic modelling

et al. 2022

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A source of Ti and V found in Brazil contains important content of both elements and has not been explored yet. Such resources would supply the demand for the battery market (Li‐ion and redox flow), robotics, unmanned aerial vehicles, and 3D printers. The hydrometallurgical route is essential to obtain different high purity products. The goal of the present work was to study the HCl leaching of Ti and V from the non‐magnetic fraction of ilmenite‐based ore. The effects of solid–liquid ratio, NaHF2, Fe0, and chloride ions were evaluated. The optimized conditions were the solid–liquid ratio of 1/6–1/12 and NaHF2 of 10 wt.% for 4 h under reducing leaching. Kinetic modelling fitted better for the chemical reaction model. The activation energy was 14.5, 15.4, and 15.5 J/mol for Ti, V, and Fe, respectively. No improvement was obtained as the concentration of chloride ions increased.

show abstract

Influence of fluoride content on the barrier layer formation and titanium dissolution in ethylene glycol–water electrolytes

Cited by 69 publications

References 53 publications

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Electrochemical behaviour of the nanostructured surface of Ti‐35Nb‐2Zr alloy for biomedical applications

Determination and explanation of the pH-related critical fluoride concentration of pure titanium in acidic solutions using electrochemical methods

Leaching of Ti and V from the non‐magnetic fraction of ilmenite‐based ore: Kinetic and thermodynamic modelling

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