Corrosion behaviour of Ti6Al4V ELI nanotubes for biomedical applications

Lario, Joan; Viera, Mauricio; Vicente, A.; Igual, A.; Amigó, V.

doi:10.1016/j.jmrt.2019.09.023

Cited by 24 publications

(11 citation statements)

References 37 publications

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Section: Electrochemical Biocorrosion Of Passive Coatings On Ti-6al-4vmentioning

confidence: 52%

“…The corrosion potential measured by potentiodynamic polarization has a lower value for anodized than bare Ti alloy. EIS results confirm that anodic anodization of Ti-6Al-4V ELI alloy permits the growth of a thick oxide compact layer at the base of the nanotubes array (see Scheme of Figure 8b), guaranteeing high corrosion resistance [131]. The research trend to increase the corrosion resistance of Ti-6Al-4V alloy goes toward the fabrication of uniform and highly ordered nanoporous layer by anodic oxidation.…”

Section: Electrochemical Biocorrosion Of Passive Coatings On Ti-6al-4vmentioning

confidence: 56%

“…Further, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analyses corroborate the surface formation of hydroxyl groups and their involvement in the bioactivity improvement of the alloy. Lario et al [131] studied the effect of nanotopography and annealing on the corrosion resistance of the Ti-6Al-4V ELI alloy. Different TiO 2 surfaces and nanotubes have been coated on Ti-6Al-4V ELI by electrochemical anodization and the electrochemical corrosion resistance investigated in 1 M NaCl solution.…”

Section: Electrochemical Biocorrosion Of Passive Coatings On Ti-6al-4vmentioning

confidence: 99%

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Passive Layers and Corrosion Resistance of Biomedical Ti-6Al-4V and β-Ti Alloys

et al. 2021

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The high specific strength, good corrosion resistance, and great biocompatibility make titanium and its alloys the ideal materials for biomedical metallic implants. Ti-6Al-4V alloy is the most employed in practical biomedical applications because of the excellent combination of strength, fracture toughness, and corrosion resistance. However, recent studies have demonstrated some limits in biocompatibility due to the presence of toxic Al and V. Consequently, scientific literature has reported novel biomedical β-Ti alloys containing biocompatible β-stabilizers (such as Mo, Ta, and Zr) studying the possibility to obtain similar performances to the Ti-6Al-4V alloys. The aim of this review is to highlight the corrosion resistance of the passive layers on biomedical Ti-6Al-4V and β-type Ti alloys in the human body environment by reviewing relevant literature research contributions. The discussion is focused on all those factors that influence the performance of the passive layer at the surface of the alloy subjected to electrochemical corrosion, among which the alloy composition, the method selected to grow the oxide coating, and the physicochemical conditions of the body fluid are the most significant.

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Section: Electrochemical Biocorrosion Of Passive Coatings On Ti-6al-4vmentioning

confidence: 52%

Section: Electrochemical Biocorrosion Of Passive Coatings On Ti-6al-4vmentioning

confidence: 56%

Section: Electrochemical Biocorrosion Of Passive Coatings On Ti-6al-4vmentioning

confidence: 99%

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Passive Layers and Corrosion Resistance of Biomedical Ti-6Al-4V and β-Ti Alloys

et al. 2021

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“…The experimental results were fitted using the equivalent circuit C (Figure c). The element R el corresponds to the solution resistance, R 1 and Q 1 represent the charge transfer resistance and the constant phase element of the nanotube layer with and without cerium mixed oxide coating, while R 2 and Q 2 are related to the inner oxide layer . It was possible to employ the same equivalent circuit for nanotubular surfaces after cerium mixed oxide deposition because this outer layer did not occlude the nanotube system.…”

Section: Resultsmentioning

confidence: 99%

“…The element R el corresponds to the solution resistance, R 1 and Q 1 represent the charge transfer resistance and the constant phase element of the nanotube layer with and without cerium mixed oxide coating, while R 2 and Q 2 are related to the inner oxide layer. 33 It was possible to employ the same equivalent circuit for nanotubular surfaces after cerium mixed oxide deposition because this outer layer did not occlude the nanotube system. From the Nyquist spectra and the fit lines shown in Figure 4 (black and green lines), it can be observed that the samples (TiNT) without the presence of cerium oxide showed remarkable corrosion resistance, remaining unaffected in the presence of hydrogen peroxide in the SBF solution.…”

Section: Electrochemicalmentioning

confidence: 99%

Cerium Coatings on Pristine and Nanostructured Ti and Ti6Al4V Surfaces: Bioactivity, Resistance in Simulated Inflammatory Conditions, and Antibacterial Performance

Santis

Varricchio

Ceccucci

et al. 2023

ACS Biomater. Sci. Eng.

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Despite the significant contribution of titanium and its alloys for hard tissue regenerative medicine, some major issues remain to be solved. Implants’ long-term stability is threatened by poor osseointegration. Moreover, bacterial adhesion and excessive inflammatory response are also to be considered in the design of a device intended to be integrated into the human body. Here, a cerium mixed oxide (CeO x ) coating was realized on pristine and nanotubular-structured Ti and Ti6Al4V surfaces using a simple layer-by-layer drop-casting technique. Bioactivity, resistance in simulated inflammatory conditions, and bactericidal capacity were evaluated as a function of morphological surface characteristics combined with the cerium quantity deposited. The results obtained suggest that the presence of CeO x on the surfaces with nanotubes enhanced osseointegration, while on the non-nanostructured surfaces, this coating improved resistance under oxidative stress and provided excellent antibacterial properties.

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