Electrochemical Behavior of Titanium Alloys Using Potentiodynamic Polarization

Jáquez-Muñoz, Jesús Manuel; Tiburcio, Citlalli Gaona; Miramontes, José Ángel Cabral; López, Francisco Estupiñán; Zambrano‐Robledo, Patricia del Carmen; Acuña, Rosa Alicia Saucedo; Almeraya-Calderón, Facundo

doi:10.1149/10101.0173ecst

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…Several surface modification methods, including electrochemical passivation, thermal oxidation, and plasma electrolytic oxidation, as well as the electrochemical characteristics of the produced layers (mainly consisted of TiO2) on Ti-6Al-4V and β-Ti alloys, are introduced [97, [167][168][169][170][171][172]. As summarized in Ta- Jaquez et al [164,165] studied the behavior of titanium alloys (Cp-Ti, Ti-6Al-2Sn-4Zr-2Mo, and Ti-6Al-4V) in the presence of acid solutions and Hank's through potentiodynamic polarization and electrochemical noise. Statistical methods indicated that the passive layer created on Ti alloys surfaces is unstable; this condition is notable for Ti-6Al-2Sn-4Zr-2Mo in NaCl solution.…”

Section: Outlook and Future Perspectivesmentioning

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: Outlook and Future Perspectivesmentioning

confidence: 99%

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

et al. 2021

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“…Pseudopassivation is related to a non-stable anodized due to a higher presence of other alloy elements (vanadium, molybdenum, or chromium). As atomic distances are higher than in a pure TiO 2 layer, Clions can attack and dissolve the passive layer through interstitial penetration (13)(14)(15). Nevertheless, the alloy presented the higher Ecorr (0.15 V) and the lower Icorr (9.12×10 -9 A/cm 2 ), indicating that corrosion kinetic will be slower than the other anodizes.…”

Section: Chemical Compositionmentioning

confidence: 99%

Electrochemical Characterization of Titanium Alloy Anodized

Jáquez-Muñoz¹,

Tiburcio²,

Miramontes³

et al. 2022

ECS Trans.

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The titanium has excellent electrochemical properties due to the formation of TiO2 on the surface. The capacity of generating a protective layer will depend on the titanium alloy used. Titanium alloys (Ti CP2, Ti-6Al-2Sn-4Zr-2Mo, Ti-6Al-4V, and Ti Beta-C) were anodized in H2SO4 and H3PO4 at 1M concentration employing a current density of 0.025A/cm2. Electrochemical characterization was made by potentiodynamic polarization (ASTM G61). Alloys anodized on H3PO4 presented an electrochemical behavior related to a more homogenous layer. Alloys with more beta stabilizers showed higher corrosion resistance than the anodized alpha and near alpha alloys.

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“…These structure–function relationships are not well-established for AM parts. Some work has been published describing the microstructure and mechanical properties of SLM-processed Ti-5553. ,,− However, there is little published research regarding the electrochemical characterization of SLM or die cast Ti-5553. ,− To address this knowledge gap, we report herein on the material characterization and electrochemical properties of SLM-prepared Ti-5553 specimens as-processed (i.e., with their native surface roughness and oxide film) and after abrading and polishing to smooth the surface texture, thereby reducing the surface roughness and enabling the formation of a less defective and more compact oxide film.…”

Section: Introductionmentioning

confidence: 99%

Material Characterization and Electrochemical Properties of Titanium Alloy 5553 Prepared by Selective Laser Melting as Processed and after Abrading and Polishing

Dammulla,

Weston,

Mahmud

et al. 2024

ACS Omega

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The microstructure, Vickers microhardness, and electrochemical properties of an additive manufactured titanium alloy, Ti-5553 (Ti−5Al−5Mo−5V−3Cr wt %), are reported on. The alloy specimens were fabricated by selective laser melt processing. The surface morphology and electrochemical properties of the as-processed and surface-pretreated (abraded and polished) Ti-5553 specimens were investigated. The as-processed specimens had a nominal density of 4.62 ± 0.04 g/cm 3 . Based on comparison with the reported density for the die-cast alloy, the specimens were 99−100% dense with ca. 1% porosity. Optical microscopy and scanning electron microscopy revealed some micropores, balling features, and fusion pore defects across the surface of the alloy (XZ plane�orthogonal to the build direction). The nominal Vickers microhardness was 292 ± 2 HV. Detailed electrochemical characterization of the as-processed and surface-pretreated alloys revealed reproducible open-circuit potentials (OCPs), linear polarization resistances (R p ), and potentiodynamic polarization curves for both specimen types in naturally aerated 3.5 wt % NaCl at room temperature. For the surface-pretreated alloys, the OCP was 225 mV more noble, the anodic current in the potentiodynamic polarization curves was 72× lower, the cathodic current was 8× lower, and R p was larger by 426× than the values for the as-processed specimens. The collective electrochemical data revealed that the surface-pretreated alloys exhibit greater corrosion resistance than the as-processed alloys due to a reduction of the real area and the formation of a more passivating oxide layer.

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Electrochemical Behavior of Titanium Alloys Using Potentiodynamic Polarization

Cited by 4 publications

References 8 publications

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

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

Electrochemical Characterization of Titanium Alloy Anodized

Material Characterization and Electrochemical Properties of Titanium Alloy 5553 Prepared by Selective Laser Melting as Processed and after Abrading and Polishing

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