Fabrication of corrosion-resistant superhydrophobic coating on magnesium alloy by one-step electrodeposition method

Zheng, Tianxu; Hu, Yaobo; Pan, Fusheng; Zhang, Yuxin; Tang, Aitao

doi:10.1016/j.jma.2019.05.006

Cited by 133 publications

(32 citation statements)

References 54 publications

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“…It can be explained by Cassie–Baxter equation [ 38 ]

\cos θ_{normalc} = f_{1} (\cos θ_{1} + 1) - 1

where

θ_{normalc}

is the WCA of the modified Ni coating,

θ_{1}

is the WCA (120°) of the modified Ni plate with smooth surface, and

f_{1}

is the fraction of the solid–liquid contact area to the total area. [ 36,37 ] Under the combined action of the composite rough structures and the low surface energy substances, the “air cushion” between the rough structures contacts the liquid, [ 39 ] resulting in the decrease in

f_{1}

and the increase in

θ_{normalc}

.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of a Robust Superhydrophobic Ni Coating with Micro–Nano Dual‐Scale Structures on 316L Stainless Steel

et al. 2020

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Herein, a superhydrophobic Ni coating is prepared on 316L stainless steel by electrodeposition and low energy modification with tetradecanoic acid. After 20 min of electrodeposition with a current density of 8 A dm−2, a Ni coating with micro–nano dual‐scale structures is obtained. The coating becomes superhydrophobic with a water contact angle (WCA) of 160.4° and a sliding angle (SA) of 8.3° after being immersed in the tetradecanoic acid solution (5 g L−1, 12 h). A two‐level structure model is established for explaining the effect of morphology on the wettability of the coating. The WCA value of the superhydrophobic Ni coating retains above 150° after being exposed in outdoor environment for 6 months and in flowing environment for 7 days. In addition, the coating still shows superhydrophobicity after 9 times of mechanical abrasion test, 12 h of acid soaking (pH = 1), and 16 h of heat treatment in 200 °C. Moreover, the coating improves the corrosion resistance of the steel substrate. This superhydrophobic Ni coating provides a simple method to prevent stainless steel from corrosion. And the theoretical calculation of the two‐level model can provide an innovative strategy for designing the structure of the superhydrophobic coating.

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“…It can be explained by Cassie–Baxter equation [ 38 ]

\cos θ_{normalc} = f_{1} (\cos θ_{1} + 1) - 1

where

θ_{normalc}

is the WCA of the modified Ni coating,

θ_{1}

is the WCA (120°) of the modified Ni plate with smooth surface, and

f_{1}

f_{1}

and the increase in

θ_{normalc}

.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of a Robust Superhydrophobic Ni Coating with Micro–Nano Dual‐Scale Structures on 316L Stainless Steel

et al. 2020

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“…Without surface modification after electrodeposition, this method generates a powerful hydrophobic effect. For instance, Zheng et al [59] electrodeposited magnesium alloys with a magnesium nitrate and stearic acid ethanol solution as an electrolyte for 30 minutes at a constant voltage (30V). According to X-ray, the cover was composed principally of magnesium stearate, which had a small quantity of magnesium oxide, and a maximum WCA 156.2, and SA 4.9˚ photoelectron spectroscopy, the Fourier Transform Infrared Spectrometer, and Energy Dispersive Spectrometer.…”

Section: Magnesium Substrate Coatingmentioning

confidence: 99%

Superhydrophobic Coating Fabrication for Metal Protection Based on Electrodeposition Application: A Review

Miller¹,

Hu²,

Weamie³

et al. 2021

MSCE

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In recent years, superhydrophobic media has attracted tremendous attention due to its industrial applicability value, especially in anti-corrosion performance. The superhydrophobic coating, which has a robust and water-repellent capacity, can catch the air to form several "airbags" on the substrate's surface, isolating the corrosion media. Various superhydrophobic coating preparation technologies have been suggested, but each has its own set of flaws. On the other hand, electrodeposition, as a relatively mature industrial processing application, offers distinct advantages. However, until now, there have been few reviews on the electrodeposition preparation of anticorrosive superhydrophobic coatings. Therefore, the author has described several fabrication techniques based on superhydrophobic coatings in this review, including the advantages and disadvantages. Superhydrophobic coatings conventional concepts and wettability, as well as the model wetting concepts, have been reviewed. The coating processing status and the corrosion-resistant potential through the electrodeposition of metal and comparable composite are detailly encapsulated. Furthermore, electrodeposition parameters, including current density, crystal modifiers, and a deposition time of the coating morphology, are reported, following the ultrasonic-assisted, jet, pulse, and magnetic field-induced electrodeposition, respectively, as the recently developed technologies for preparing a coating. Finally, technology limitation is shown as well as the obstacles and prospects, and the improvement of the superhydrophobic coating's durability as a prospects research focus has been recommended.

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“…In addition, the superhydrophobic coating prepared by one-step electrodeposition method also confronted with many defects. Zheng et al [30] fabricated corrosion-resistant superhydrophobic coating on AZ31 by the same one-step method using magnesium nitrate and stearic acid under different solution concentrations. The minimum i corr of the coating was 5.80 × 10 −8 A cm −2 about one order of magnitude higher than that of we prepared.…”

Section: Comparison Among Corrosion Resistant Coatings On the Mg Alloysmentioning

confidence: 99%

“…Furthermore, the superhydrophobic coatings prepared by traditional two-step methods have some inevitable disadvantages such as poor durability, weak adhesion and complex multi-step processing [10,29]. Different from the previously complicated preparation methods, a superhydrophobic coating with a micro/nanosized rough structure on Mg substrates can be constructed via a facile one-step electrodeposition [30,31]. As an easyoperated, efficient and low-cost method, one-step electrodeposition applied for the preparation of superhydrophobic coating could diminish coating defects, such as diverse cracks or pores on traditional coatings [32][33][34][35] and limitations of complex structures.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance and Durability of Superhydrophobic Coating on AZ31 Mg Alloy via One-Step Electrodeposition

Yin

Zhang

Tian

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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To enhance durability and adhesion of superhydrophobic surface, an integrated superhydrophobic calcium myristate (Ca[CH 3 (CH 2 ) 12 COO] 2 ) coating with excellent corrosion resistance was fabricated on AZ31 magnesium (Mg) alloy via one-step electrodeposition process. Field-emission scanning electron microscopy, Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy as well as X-ray diffraction were employed to investigate the surface characteristics (morphology, composition and structure) of the coatings. Hydrophobicity of the coating was evaluated by means of contact and sliding angles. Additionally, potentiodynamic polarization, electrochemical impedance spectroscopy and hydrogen evolution tests were conducted to characterize the corrosion resistance. Results indicated that the coating exhibited super-hydrophobicity with large static water contact angle (CA) and small sliding angle of 155.2° ± 1.5° and 6.0° ± 0.5°, respectively, owing to spherical rough structure and low surface energy (7.01 mJ m −2 ). The average hydrogen evolution rate (HER a ) and corrosion current density (i corr ) of the coated sample were 5.3 μL cm −2 h −1 and 5.60 × 10 −9 A cm −2 , about one and four orders of magnitude lower than that of AZ31 substrate, respectively, implying the excellent corrosion resistance. The CA of the coating remained 155.6° ± 0.9° after soaking for 13 days, showing the super-hydrophobicity and stability of the coating. Simultaneously, the large critical load (5004 mN) for the coating designated the outstanding adhesion to the substrate by nano-scratch test.

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Fabrication of corrosion-resistant superhydrophobic coating on magnesium alloy by one-step electrodeposition method

Cited by 133 publications

References 54 publications

Fabrication of a Robust Superhydrophobic Ni Coating with Micro–Nano Dual‐Scale Structures on 316L Stainless Steel

Fabrication of a Robust Superhydrophobic Ni Coating with Micro–Nano Dual‐Scale Structures on 316L Stainless Steel

Superhydrophobic Coating Fabrication for Metal Protection Based on Electrodeposition Application: A Review

Corrosion Resistance and Durability of Superhydrophobic Coating on AZ31 Mg Alloy via One-Step Electrodeposition

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