Role of phosphate, silicate and aluminate in the electrolytes on PEO coating formation and properties of coated Ti6Al4V alloy

Wu, Ting; Blawert, Carsten; Serdechnova, Maria; Karlova, Polina; Dovzhenko, Gleb; Wieland, D. C. Florian; Stojadinović, Stevan; Vasilić, Rastko; Wang, Linqian; Wang, Cheng; Mojsilović, Kristina; Zheludkevich, Mikhail L.

doi:10.1016/j.apsusc.2022.153523

Cited by 32 publications

(7 citation statements)

References 66 publications

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“…Moreover, the near-steady state was reached after extending the immersion period for all samples in both media. An ongoing passive film in solution is typically responsible for such features [68]. During the passivation process, their E ocp values and pH values stabilized at around 320 mV SCE and 450 mV SCE , respectively.…”

Section: Resultsmentioning

confidence: 99%

Effect of PMMA sealing treatment on the corrosion behavior of plasma electrolytic oxidized titanium dental implants in fluoride-containing saliva solution

Mohammed

Daily

Alsharbaty

et al. 2022

Mater. Res. Express

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Titanium (Ti) and its alloys are widely used as dental implant materials because of their high mechanical properties, biocompatibility, and corrosion resistance. This research was undertaken to study the effect of polymethyl-methacrylate (PMMA) sealing layer on the corrosion performance of plasma electrolytic oxidation (PEO)-coated titanium-based dental implants in pure saliva and fluoride-containing saliva solutions. The phase structure, chemical composition, and microstructure of coatings were investigated via X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy, respectively. The corrosion behavior of the samples was evaluated by open circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy tests. The deposition of the PMMA layer on the PEO-coated Ti dental implants was found to effectively seal the micropores and microcracks of the TiO2 coatings and block corrosive ions' penetration routes through the coating. Thereby, the results indicated that better corrosion performance was observed when the PMMA layer is applied on PEO-coated Ti dental implants than on the simple PEO coatings.

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Section: Resultsmentioning

confidence: 99%

Effect of PMMA sealing treatment on the corrosion behavior of plasma electrolytic oxidized titanium dental implants in fluoride-containing saliva solution

Mohammed

Daily

Alsharbaty

et al. 2022

Mater. Res. Express

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“…Atomic emission spectroelectrochemistry (AESEC) was performed using an inductively coupled plasma optical emission spectroscopy system from Spectro Ametek (SPECTRO Analytical Instruments GmbH, Kleve, Germany) in combination with a Gamry Interface 1010E Potentiostat (Gamry, Warminster, USA). − The dissolution kinetics of Mg from bare and LDH-coated specimens was tracked in a flow cell with a rate of electrolyte (5 wt % NaCl solution) equal to 2 mL/min at room temperature during 60 min. The surface area of samples was equal to 0.5 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

Corrosion Inhibitors Intercalated into Layered Double Hydroxides Prepared In Situ on AZ91 Magnesium Alloys: Structure and Protection Ability

Shulha

Serdechnova

Lamaka

et al. 2023

ACS Appl. Mater. Interfaces

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This work first describes the intercalation of corrosion inhibitors into layered double hydroxides LDH-OH/CO 3 nanocontainers (parental LDH) obtained in situ on the surface of magnesium alloy AZ91 in the presence of a chelating agent. Vanadate, as a typical broad inhibitor for active metals, and oxalate, as an inhibitor suitable for magnesium, were selected as a first approach. The optimization of exchange conditions was performed, and the optimal parameters (ambient pressure and 95 °C) were selected. The corrosion protective properties of obtained LDH-based layers were studied using immersion and salt spray tests in NaCl solution, supported by electrochemical impedance spectroscopy and atomic emission spectroelectrochemistry. It is demonstrated that vanadate intercalated into LDH is more effective for the active protection of AZ91 in comparison to the performance of oxalate. A possible mechanism of corrosion inhibition based on the application of LDH nanocontainers is suggested and discussed.

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“…The most widely used coatings in the field of micro-arc coating research are the ones synthesized in electrolytes based on phosphates, silicates, and, a little less common, aluminates [26][27][28][29][30][31][32][33]. Aluminate-based electrolytes are typically used to produce wear resistant MAO coatings due to the dominant formation of MgAl2O4 as a very solid phase.…”

Section: Introductionmentioning

confidence: 99%

Functionalizing Diatomite-Based Micro-Arc Coatings for Orthopedic Implants: Influence of TiO<sub>2</sub> Addition

Kashin¹,

Sedelnikova²,

Уваркин³

et al. 2023

Preprint

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The method of micro-arc oxidation has been utilized to synthesize a protective biocompatible coating for a bioresorbable orthopedic Mg implant. This paper presents the results of a comprehensive research of micro-arc coatings based on diatomite – a biogenic material consisting of shells of diatom microalgae. The main focus of this study was the functionalization of diatomite-based micro-arc coatings by incorporating the particles of titania (TiO2) into them. Various properties of the resulting coatings were examined and evaluated. The XRD analysis has revealed the formation of a new magnesium orthosilicate phase – forsterite (Mg2SiO4). It has been established that the corrosion current density of the coatings has decreased by 2-4 orders of magnitude after the inclusion of TiO2 particles, depending on the coating process voltage. The adhesion strength of the coatings has increased following the particle incorporation. The processes of dissolution of both coated and uncoated samples in a sodium chloride solution were studied. The in vitro cell viability was assessed, which showed that the coatings significantly reduce the cytotoxicity of Mg samples.

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Role of phosphate, silicate and aluminate in the electrolytes on PEO coating formation and properties of coated Ti6Al4V alloy

Cited by 32 publications

References 66 publications

Effect of PMMA sealing treatment on the corrosion behavior of plasma electrolytic oxidized titanium dental implants in fluoride-containing saliva solution

Effect of PMMA sealing treatment on the corrosion behavior of plasma electrolytic oxidized titanium dental implants in fluoride-containing saliva solution

Corrosion Inhibitors Intercalated into Layered Double Hydroxides Prepared In Situ on AZ91 Magnesium Alloys: Structure and Protection Ability

Functionalizing Diatomite-Based Micro-Arc Coatings for Orthopedic Implants: Influence of TiO<sub>2</sub> Addition

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