Fabrication of highly ordered nanoporous oxide layer on Ti6Al4V surfaces for improved corrosion resistance property

Saha, Sourav Kr.; Park, Yang Jeong; Cho, Sung Oh

doi:10.1016/j.molstruc.2020.129244

Cited by 10 publications

(2 citation statements)

References 58 publications

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“…By reducing the defects of the porous layer, corrosion can be firmly decelerated. In a very recent study [132], electrochemical anodization has been employed to produce uniform self-organized nanoporous oxide layers (with pore average diameter of 90 nm) on the Ti-6Al-4V surfaces in ethylene glycol electrolyte containing ammonium fluoride and lactic acid. Corrosion resistance evaluated in NaCl medium strongly increases, compared to the bare Ti- 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: 99%

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: 99%

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

et al. 2021

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“…Similarly, Saha et.al. [77] showed that the anti-corrosion ability of the titanium surface due to Cl-ion attack increased after the production of the nanoporous oxide layer. In addition, they stated that the annealed Ti6Al4V sample showed a slightly higher Icorr value than the anodized Ti6Al4V sample, and the corrosion inhibition ability decreased slightly after annealing.…”

Section: Microstructural Analysismentioning

confidence: 99%

Corrosion behavior of fiber laser welded Ti-6Al-4V alloy rods with different pH and temperature in 0.9 wt% NaCl medium

Yontar,

Çevik

2023

Res. Eng. Struct. Mat.

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The corrosion resistance of laser welded samples was carried out in a shaken incubator in body-simulated liquid environments and kept at pH3-5 and 25-50˚C conditions for 24 hours. It was determined that acicular α' martensite structures were formed in the fusion regions and these structures increased the hardness of the alloy by 20% compared to the base metal. The welded samples had the highest tensile strength of 144 MPa. Weight changes after the corrosion test were calculated and the highest weight loss was found to be 0.0025 g for the sample with an initial weight of 4.1394 g. TiO2 oxides and {1 0 0} and {1 1 1} chamber-shaped salt crystals were formed larger and more intensely in the fusion zones than the base metal. Dental metallic implant welding with fiber laser will have higher corrosion resistance in oral use with different temperature and pH environments compared to screw joints.

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