An ionic liquid-assisted strategy for enhanced anticorrosion of low-energy PEO coatings on magnesium–lithium alloy

Zhang, You; Chen, Chuping; Tian, Haoyue; Wang, Shuqi; Chen, Wen; Chen, Fei

doi:10.1016/j.jma.2023.01.004

Cited by 6 publications

(6 citation statements)

References 72 publications

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“…12,[15][16][17][14][15][16][17][18][19][20][21][22][23][24][25][26][27] These micropores and flat structures result from continuous localised discharge events associated with molten metal oxide deposition and disperse on the coating surface. [26][27][28][29] As can be clearly seen from the surface morphologies of the coatings in Figure 1, flat structures with numerous circular micro-voids were found on the surfaces of all samples. It is known that the size of micropores and their distribution on the surface can vary depending on the coating parameters.…”

Section: Resultsmentioning

confidence: 79%

“…The results further explain the stronger binding energy of the ionic liquid to the coating. 28,50 These phases are obtained by the electrochemical conversion reaction of the substrate with anions of the electrolyte during the constant discharging process. In the literature, it has been reported that the dense inner layer of the coating mainly contains MgO, while Mg 2 SiO 4 is preferably formed in the outer layer due to the reactions between Mg 2+ and the electrolyte.…”

Section: Resultsmentioning

confidence: 99%

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Corrosion and adhesion properties of MAO-coated LA91 magnesium alloy

Sukuroglu,

Totik

et al. 2024

Materials Science and Technology

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Magnesium–lithium alloy is used in different areas of industry and is known as a super light metallic engineering material. However, the use of these alloys is limited due to their surface properties under extreme loads and aggressive environments. Surface treatments can be applied to these alloys to increase their usage areas and improve their weak surface properties. In this study, the micro-arc oxidation method was applied to improve the surface properties of LA91 alloy. The corrosion and adhesion behaviour of the coated samples were investigated. The lowest corrosion current density in the coatings was obtained under Experiment 3. Experiment 3 has the highest Lc2 value due to the coating thickness and the denser and smaller diameter pores of the functional intermediate layer.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Corrosion and adhesion properties of MAO-coated LA91 magnesium alloy

Sukuroglu,

Totik

et al. 2024

Materials Science and Technology

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“…The I corr decreases significantly and the E corr shifts toward the positive direction with time, which indicates that the LDH film loaded with 8HQ for 6 h provides better corrosion resistance in comparison with other times. Moreover, the higher the R p value is, the better the corrosion resistance has [32,54]. The inhibition efficiency (IE or η) can be calculated through R p as (Equation ( 2)):…”

Section: Effect Of Anion Exchange Reaction Time On the Corrosion Resi...mentioning

confidence: 99%

“…The anti-corrosion performance of the LDH films can be characterized by the capacitive circuit radius in the Nyquist plot in Figure 6a [57]. The charge transfer process manifests the characteristics of the double electric layer at the interface between the electrolyte and the electrode, and the charge transfer resistance causes the capacitive circuit [54,58]. The capacitive circuit radius of the LDH-8HQ film loaded for 6 h is the largest, followed by other loading times.…”

Section: Effect Of Anion Exchange Reaction Time On the Corrosion Resi...mentioning

confidence: 99%

LDH-Based “Smart” Films for Corrosion Sensing and Protection

et al. 2023

Self Cite

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In a “smart” corrosion-protective coating system, both the active anti-corrosion and the early corrosion detection of underlying metals are highly required. It is practical significant to develop materials that possess self-detecting of the early local corrosion and self-healing of coating defects simultaneously. The organic compound 8-hydroxyquinoline (8HQ) is an effective inhibitor and a fluorescent sensor probe for corrosion of aluminum alloy. Therefore, a layer double hydroxide (LDH) nanocontainer film loaded with the 8HQ was developed for the active corrosion protection purpose of aluminum alloy AA2024. In corrosive environments, the 8HQ are released from LDH film to inhibit the corrosion process, leading to the loss of the complexation with Al3+ ions in LDH laminates, thus turning off fluorescence. Results show that the LDH film loaded with 8HQ composites can improve the anti-corrosion performance of the film by releasing corrosion inhibitors on demand. Simultaneously, due to the complexation of 8HQ and Al3+ ions, the LDH film is fluorescent at the initial stage under ultraviolet light, and then becomes non-fluorescent at the corrosion sites, indicating the corrosion evolution process of the coating. The 8HQ-loaded LDH film with self-healing and self-detecting dual functions provides promising opportunities for the effective corrosion protection of aluminum alloy due to its “smart” and multifunctional properties.

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“…Ionic liquids (ILs) consist of different organic cations and anions and are considered to be the new environmentally friendly liquids. They are used in a wide range of applications due to their outstanding properties (Bodin et al, 2023;Feuzing et al, 2023;Zhang et al, 2023;Zhao and Tong, 2023). ILs are miscible with most organic and inorganic substances, they have negligible vapour pressure, good thermal and chemical stability which called "green solvents" (Yang et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Effects of different ionic liquids on microbial growth, enzyme activity and microbial community structure of soil

Chu,

Zheng,

Zhao

et al. 2023

Preprint

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Ionic liquids (ILs) are widely used “green solvent” as they have a low vapor pressure and can replace volatile solvents in industry. However, ILs are difficult to biodegrade and are potentially harmful to the environment. This study, herein, investigated the toxicity of three imidazole ILs ([C8MIM]Cl, [C8MIM]Br, and [C8DMIM]Br) towards soil microorganisms. The results showed that the ILs inhibited the growth of soil culturable microorganisms (fungi, bacteria, and actinomycetes) and affected the activity of soil enzyme. In addition, microbial community species and abundance in soil were altered, with significant differences between the control and experimental groups. Alpha diversity analysis showed that the community abundance tended to increase and then decrease with increasing ILs concentrations. The decrease in species abundance implied that the soil microbial system was less resilient to disturbance. Finally, functional prediction analysis revealed that ILs mainly affected the carbohydrate metabolism and amino acid metabolic processes of the microorganisms. ILs with single methyl substituent had a more pronounced effect than those with double methyl substituents. This study contributes to a better understanding of the environmental safety and ecological risks of ILs.

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An ionic liquid-assisted strategy for enhanced anticorrosion of low-energy PEO coatings on magnesium–lithium alloy

Cited by 6 publications

References 72 publications

Corrosion and adhesion properties of MAO-coated LA91 magnesium alloy

Corrosion and adhesion properties of MAO-coated LA91 magnesium alloy

LDH-Based “Smart” Films for Corrosion Sensing and Protection

Effects of different ionic liquids on microbial growth, enzyme activity and microbial community structure of soil

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