The Potential of the Superhydrophobic State to Protect Magnesium Alloy against Corrosion

Emelyanenko, Kirill A.; Chulkova, Elizaveta V.; Семилетов, А. М.; Domantovsky, A. G.; Palacheva, V.V.; Emelyanenko, Alexandre M.; Бойнович, Л. Б.

doi:10.3390/coatings12010074

Cited by 18 publications

(10 citation statements)

References 33 publications

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“…The antibacterial rates of S. aureus in SHL-150 µm and SHB-150 µm were 8.01% and 82.05%, respectively. The big difference in antibacterial rates in these specimens showed that the laser-chemical surface treatment induced superhydrophobicity and improved the antibacterial performance of Mg alloy significantly [36,37]. Equation ( 1) was used to calculate the antibacterial rate of the laser-structured and laser-chemical-treated specimens based on China's standard GB/T 2591 [56], as shown in Figure 11.…”

Section: Antibacterial Propertymentioning

confidence: 99%

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Laser–Chemical Surface Treatment for Enhanced Anti-Corrosion and Antibacterial Properties of Magnesium Alloy

Xiong,

Fu,

Liu

et al. 2024

Coatings

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Magnesium (Mg) alloy with good biomechanical and biocompatible properties is considered to be a promising biodegradable material for various applications. However, Mg alloy that is chemically active tends to be corroded in a physiological environment. In this work, we proposed a laser–chemical surface treatment to combine laser surface structuring and stearic immersion treatment to enhance the anti-corrosion and antibacterial properties of Mg alloy. The effects of surface structuring, chemistry, and wettability were analyzed, and the performance of the proposed technique was evaluated in terms of corrosion resistance and antibacterial properties. The experiments showed the following: (1) surface structuring by laser-induced dual-scale micro/nanostructures produced superhydrophilicity, with a water contact angle (WCA) of 0° on the surface of the Mg alloy; (2) applying the stearic acid immersion changed the chemistry of the Mg alloy’s surface and thus facilitated the wettability transition to superhydrophobicity, with a WCA of 160.1° ± 0.5°; (3) the proposed laser–chemical surface treatment enhanced corrosion resistance and stabilized the wettability of Mg alloy in a corrosive medium significantly; and (4) the proposed laser–chemical surface treatment enhanced the antibacterial properties of the Mg alloy greatly, with an improved antibacterial rate as high as 82.05%. This work proved that the proposed laser–chemical surface treatment was a simple, effective, and efficient technique to modulate and control the wettability and further improve the anti-corrosion and antibacterial properties of the Mg alloy.

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Section: Antibacterial Propertymentioning

confidence: 99%

“…The laser-chemical-treated surface of superhydrophobic Mg AZ91D showed excellent corrosion resistance. Emelyanenko et al [36] processed superhydrophobic Mg MA8 using a nanosecond laser and CVD with fluorosilane. The corrosion current of the processed Mg MA8 was drastically reduced when it was compared with that of the polished sample.…”

Section: Introductionmentioning

confidence: 99%

Laser–Chemical Surface Treatment for Enhanced Anti-Corrosion and Antibacterial Properties of Magnesium Alloy

Xiong,

Fu,

Liu

et al. 2024

Coatings

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“…In the previous part, we summarize the preparation strategy and protection mechanism of superhydrophobic coatings to abate the corrosion behavior of Mg alloys ( Table 1 ) [ 7 , 33 , 42 , 52 , 57 , 68 , 70 , 72 , 73 , 74 , 75 , 76 , 77 ], which is helpful for researchers to develop superhydrophobic film with enhanced anti-corrosion characteristics on the Mg alloy. The advantages and disadvantages of various preparation technologies were compared.…”

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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“…While superhydrophobic coatings with great water repellency can provide outstanding barrier protection. The fabrication of hydrophobic and superhydrophobic coatings has emerged as a novel method to prevent metals corrosion − because the as-formed air cushion at the solid–liquid interface acts as a physical barrier. This can effectively reduce the contact area between the two, preventing or slowing the intrusion of the corrosive medium through the coating .…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Superhydrophobic Coupling Conversion Coating with Corrosion Resistance on Magnesium Alloy

Wei

Wang

et al. 2023

Langmuir

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An eco-friendly superhydrophobic conversion coating is fabricated to enhance the corrosion resistance of the AZ31B Mg alloy by combining the deep eutectic solvent pretreatment and electrodeposition. The coral-like micro−nano structure formed by reacting deep eutectic solvent and Mg alloy provides a structural basis for constructing a superhydrophobic coating. Cerium stearate with low surface energy is deposited on the structure, providing the coating's superhydrophobicity and the corrosion inhibition effect. Electrochemical test results demonstrate that the as-prepared superhydrophobic conversion coating (water contact angle at 154.7°) with a 99.68% protection effect significantly improves anticorrosion properties for the AZ31B Mg alloy. The corrosion current density decreases from 1.79 × 10 −4 A•cm −2 of Mg substrate to 5.57 × 10 −7 A•cm −2 of the coated sample. Besides, the electrochemical impedance modulus reaches the value of 1.69 × 10 3 Ω•cm 2 and increases approximately 23 times in magnitude compared with the Mg substrate. Furthermore, the corrosion protection mechanism is attributed to the coupling effect of water-repellency barrier protection and corrosion inhibition, resulting in excellent corrosion resistance. Results demonstrate a promising strategy for the corrosion protection of Mg alloys by replacing the chromate conversion coating with the superhydrophobic coupling conversion coating.

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The Potential of the Superhydrophobic State to Protect Magnesium Alloy against Corrosion

Cited by 18 publications

References 33 publications

Laser–Chemical Surface Treatment for Enhanced Anti-Corrosion and Antibacterial Properties of Magnesium Alloy

Laser–Chemical Surface Treatment for Enhanced Anti-Corrosion and Antibacterial Properties of Magnesium Alloy

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

Eco-Friendly Superhydrophobic Coupling Conversion Coating with Corrosion Resistance on Magnesium Alloy

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