Effect of thermo-mechanical processing on the corrosion resistance of Ti6Al4V alloys in biofluids

Vasilescu, Ecaterina; Drob, Paula; Răducanu, Doina; Cincă, Ion; Mareci, Daniel; Moreno, José María Calderón; Popa, Mónica; Vasilescu, Cora; Rosca, Julia Claudia Mirza

doi:10.1016/j.corsci.2009.08.014

Cited by 99 publications

(65 citation statements)

References 46 publications

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“…For ternary Ti-6Al-4V alloy, Bode plot ( Figure 3) at E oc exhibited two phase angles at -70 o and -80 o corresponding with three time constants: the third time constant is for diffusion processes through 27 and is shown by the diffusion Warburg impedance, W and diffusion resistance R 3 (Figure 4). …”

Section: Improvement Of Corrosion Resistance From Electrochemical Impmentioning

confidence: 99%

Corrosion resistance improvement of titanium base alloys

Popa¹,

Vasilescu²,

Drob³

et al. 2010

Quím. Nova

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Recebido em 4/2/10; aceito em 2/6/10; publicado na web em 24/8/10The corrosion resistance of the new Ti-6Al-4V-1Zr alloy in comparison with ternary Ti-6Al-4V alloy in Ringer-Brown solution and artificial Carter-Brugirard saliva of different pH values was studied. In Ringer-Brown solution, the new alloy presented an improvement of all electrochemical parameters due to the alloying with Zr; also, impedance spectra revealed better protective properties of its passive layer. In Carter-Brugirard artificial saliva, an increase of the passive film thickness was proved. Fluoride ions had a slight negative influence on the corrosion and ion release rates, without to affect the very good stability of the new Ti-6Al-4V-1Zr alloy.

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Section: Improvement Of Corrosion Resistance From Electrochemical Impmentioning

confidence: 99%

Corrosion resistance improvement of titanium base alloys

Popa¹,

Vasilescu²,

Drob³

et al. 2010

Quím. Nova

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“…It was clearly shown for Ti-Ni [9] and Ti6Al-4V [10] alloys. Therefore among the directions of the further biomedical Ti-Nb-Zr alloys research there is study of structure, including nanostructure, influence on the alloys' electrochemical behavior, as well as optimization of their treatment conditions concerning combination of mechanical, functional and electrochemical properties.…”

Section: Resultsmentioning

confidence: 86%

A study of structure formation in Ti-Nb-Zr shape memory alloys for medical application

Филонов

Braïlovski

Прокошкин

et al. 2011

J. Phys.: Conf. Ser.

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Abstract.A study of structure formation in Ti-Nb-Zr shape memory alloys was carried out by means of transmission electron microscopy. After 450 о С annealing of cold-worked specimens a very high dislocation density (10 11 сm -2 ) remained; after 600 о С annealing a mixed structure consisting of submicron sized grains and subgrains formed. Therefore, a nanosubgrained structure is expected to form after 500 -550 о С annealing.

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“…The spectra were acquired in the 10 5 -10 À1 Hz frequency range. The impedance spectra were displayed as Nyquist and Bode (phase angle vs. frequency) diagrams [29][30][31][32].…”

Section: Methodsmentioning

confidence: 99%

“…VoltaMaster 4 program directly supplies the values of the corrosion current density, i corr , corrosion rate, V corr and polarisation resistance, R p . Ion release rates were calculated [29][30][31][32].…”

Section: Methodsmentioning

confidence: 99%

Surface characterisation and electrochemical stability of anodised new alloy in simulated physiological electrolytes

Vasilescu

Moreno

Drob

et al. 2013

Materials and Corrosion

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In this paper, we applied the potentiostatic anodisation method on the new Ti-20Nb-10Zr-5Ta alloy surface with the aim to increase its stability and bioactivity. The morphology (SEM) and composition (Raman, FT-IR) of the obtained anodisation nanolayer are studied. Also, electrochemical stability (by cyclic potentiodynamic polarisation and EIS), corrosion resistance (by linear polarisation), long-term behaviour (by monitoring of the open circuit potentials and corresponding open circuit potential gradients) and the characterisation of the layers deposited on the alloy surface after 1000 h in acid, neutral and alkaline Ringer and neutral Ringer-Brown solutions are presented. By potentiostatic anodisation, on the alloy surface was electrodeposited a continuous nanolayer containing TiO 2 rutile type oxide. The anodised layer possesses better protective properties and at the same time better porosity, therefore a higher stability and bioactivity in comparison with the native passive film. After 1000 h in the testing solutions promoted the deposition of the brushite, phosphatotitanate and hydroxyapatite, precursors, respectively component of the human bone, namely this layer is bioactive.

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Effect of thermo-mechanical processing on the corrosion resistance of Ti6Al4V alloys in biofluids

Cited by 99 publications

References 46 publications

Corrosion resistance improvement of titanium base alloys

Corrosion resistance improvement of titanium base alloys

A study of structure formation in Ti-Nb-Zr shape memory alloys for medical application

Surface characterisation and electrochemical stability of anodised new alloy in simulated physiological electrolytes

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