Improving the electrochemical stability of AZ31 Mg alloy in a 3.5wt.% NaCl solution via the surface functionalization of plasma electrolytic oxidation coating

Kaseem, Mosab; Zehra, Tehseen; Dikici, Burak; Dafali, A.; Yang, Haozhe; Ko, Young Gun

doi:10.1016/j.jma.2021.08.028

Cited by 43 publications

(7 citation statements)

References 76 publications

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“…We speculated that the deposition of hydroxyl ions on the surface altered the oxide layer of alloys by donating electrons and thereby enhanced the compatibility of specimens. To support this concept, a recent study investigated the efficiency of an AZ31 Mg alloy that was fabricated with plasma electrolytic oxidation in a 3.5 wt.% NaCl solution, in specific interactions with hexadecanoic acid and albumin molecules [ 47 ]. The above study also provided evidence that the binding efficiency with hexadecanoic acid and albumin was potentially altered due to the electrolytic oxidation of the AZ31 Mg alloy.…”

Section: Discussionmentioning

confidence: 99%

Antibacterial and Proliferative Effects of NaOH-Coated Titanium, Zirconia, and Ceramic-Reinforced PEEK Dental Composites on Bone Marrow Mesenchymal Stem Cells

et al. 2022

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Several metallic and polymer-based implants have been fabricated for orthopedic applications. For instance, titanium (Ti), zirconia (Zr), and polyetheretherketone (PEEK) are employed due to their excellent biocompatibility properties. Hence, the present study aimed to compare the functional and biological properties of these three biomaterials with surface modification. For this purpose, Ti, Zr, and ceramic-reinforced PEEK (CrPEEK) were coated with NaOH and tested for the biological response. Our results showed that the surface modification of these biomaterials significantly improved the water contact, protein adhesion, and bioactivity compared with uncoated samples. Among the NaOH-coated biomaterials, Ti and CrPEEK showed higher protein absorption than Zr. However, the mineral binding ability was higher in CrPEEK than in the other two biomaterials. Although the coating improved the functional properties, NaOH coating did not influence the antibacterial effect against E. coli and S. aureus in these biomaterials. Similar to the antibacterial effects, the NaOH coating did not contribute any significant changes in cell proliferation and cell loading, and CrPEEK showed better biocompatibility among the biomaterials. Therefore, this study concluded that the surface modification of biomaterials could potentially improve the functional properties but not the antibacterial and biocompatibility, and CrPEEK could be an alternative material to Ti and Zr with desirable qualities in orthopedic applications.

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Section: Discussionmentioning

confidence: 99%

Antibacterial and Proliferative Effects of NaOH-Coated Titanium, Zirconia, and Ceramic-Reinforced PEEK Dental Composites on Bone Marrow Mesenchymal Stem Cells

et al. 2022

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“…The higher values of R i in PEO-Trp, ZrOF, TiOF, and MOF samples would imply that the sealing by the Trp and MOF complexes not only affected the outer part of PEO coating but also reach the inner part of PEO coating, leading to significant improvements in the protection properties. Moreover, the lowest value of Y o (2.18 × 10 –12 S·s n ·cm –2 ) and the highest value of n o (0.936) in the WOF sample would imply that the exposed area and the uniformity of the outer layer were improved . While the values of R o decreased following an extended immersion time of 48 h, the values of R i remained nearly unchanged, implying that the utilization of WOF led to substantial corrosion protection for the AZ31 Mg alloy substrate.…”

Section: Resultsmentioning

confidence: 96%

“…The higher values of R i in PEO-Trp, ZrOF, TiOF, and MOF samples would imply that the sealing by the Trp and MOF complexes not only affected the outer part of PEO coating but also reach the inner part of PEO coating, leading to significant improvements in the ) and the highest value of n o (0.936) in the WOF sample would imply that the exposed area and the uniformity of the outer layer were improved. 21 While the values of R o decreased following an extended immersion time of 48 h, the values of R i remained nearly unchanged, implying that the utilization of WOF led to substantial corrosion protection for the AZ31 Mg alloy substrate. Figure S5(a) suggests that, although WOF on the substrate exhibits higher corrosion resistance than the bare substrate, it is lower compared to the PEO-coated layer, emphasizing the significance of the PEO layer during the corrosion tests.…”

Section: Morphology and Edsmentioning

confidence: 91%

“…The designed molecules of Trp and its complex with metallic oxides (ZrO 2 , TiO 2 , and WO 3 ) for the calculation were illustrated in 3D by GaussView 6.0 software. Geometry optimization and calculations were executed through Gaussian 09W, employing the density functional theory (DFT) approach with the B3LYP functional and a 6-311G (d,p) + LANL2DZ (on the transition metal) mixed basis set . Molecular orbital energies (highest occupied molecular orbital/HOMO and lowest unoccupied molecular orbital/LUMO) of the optimized structure are calculated and then used to determine quantum chemical parameters of ionization potential ( I ), electron affinity ( A ), absolute hardness (η), absolute softness (σ), absolute electronegativity (χ), chemical potential (μ), and electrophilicity index (ω).…”

Section: Experimental and Theoretical Detailsmentioning

confidence: 99%

See 1 more Smart Citation

Interfacial and Electronic Modulation of M-Bridged Heterostructures with L-Tryptophan and Transition Metallic Oxides: Enhancing Corrosion Resistance and Photocatalytic Activity

Safira,

Kaseem

2023

ACS Appl. Mater. Interfaces

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“…However, unwanted side reactions would occur during the aforementioned superhydrophobic coating preparation process. Based on the above problem, the unique interactions between hexadecanoic acid (HA) and albumin (ALB) molecules, on the surface of the porous layer of AZ31 Mg alloys, were exploited by Kaseem et al to fabricate a novel hybrid composite film with excellent anti-corrosion in a 3.5 wt.% NaCl solution [ 43 ]. In addition, we can also refer to other literature [ 42 , 44 , 45 , 46 , 47 , 48 ] on improving the corrosion resistance of Mg alloys by post-treatment.…”

Section: Superhydrophobic Coatingsmentioning

confidence: 99%

Recent Progress in Functionalized Coatings for Corrosion Protection of Magnesium Alloys—A Review

Zhang

Liu

et al. 2022

Materials

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Magnesium (Mg) and its alloys, which have good mechanical properties and damping capacities, are considered as potential candidate materials in the industrial field. Nevertheless, fast corrosion is the main obstacle that seriously hinders its wide applications. Surface modification is an available method to avoid the contact between corrosive media and Mg substrates, thus extending the service life of Mg-based materials. Generally, manufacturing a dense and stable coating as physical barriers can effectively inhibit the corrosion of Mg substrates; however, in some complex service environments, physical barrier coating only may not satisfy the long-term service of Mg alloys. In this case, it is very important to endow the coating with suitable functional characteristics, such as superhydrophobic and self-healing properties. In this review, the various surface treatments reported are presented first, followed by the methods employed for developing superhydrophobic surfaces with micro/nanostructuring, and an overview of the various advanced self-healing coatings, devolved on Mg alloys in the past decade, is further summarized. The corresponding preparation strategies and protection mechanisms of functional coatings are further discussed. A potential research direction is also briefly proposed to help guide functional strategies and inspire further innovations. It is hoped that the summary of this paper will be helpful to the surface modification of Mg alloys and promote the further development of this emerging research field.

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Improving the electrochemical stability of AZ31 Mg alloy in a 3.5wt.% NaCl solution via the surface functionalization of plasma electrolytic oxidation coating

Cited by 43 publications

References 76 publications

Antibacterial and Proliferative Effects of NaOH-Coated Titanium, Zirconia, and Ceramic-Reinforced PEEK Dental Composites on Bone Marrow Mesenchymal Stem Cells

Antibacterial and Proliferative Effects of NaOH-Coated Titanium, Zirconia, and Ceramic-Reinforced PEEK Dental Composites on Bone Marrow Mesenchymal Stem Cells

Interfacial and Electronic Modulation of M-Bridged Heterostructures with L-Tryptophan and Transition Metallic Oxides: Enhancing Corrosion Resistance and Photocatalytic Activity

Recent Progress in Functionalized Coatings for Corrosion Protection of Magnesium Alloys—A Review

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