Influence of materials and fabrication strategies in tailoring the anticorrosive property of superhydrophobic coatings

Krishnan, Athira; Krishnan, Abhirami V.; Ajith, Akhila; Shibli, S.M.A.

doi:10.1016/j.surfin.2021.101238

Cited by 22 publications

(10 citation statements)

References 210 publications

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“…The phenomena of wettability and adhesiveness between water and solid surfaces have been the topic of much research, owing to their wide range of practical applications to daily life [ 1 , 2 , 3 ]. Superhydrophobicity with water contact angles greater than 150° can be used in special fields, such as self-cleaning [ 4 ], anticorrosion [ 5 ], anti-icing [ 6 , 7 ], oil–water separation [ 8 ], etc. Hierarchical structures and low surface free energy are key elements in superhydrophobic surfaces.…”

Section: Introductionmentioning

confidence: 99%

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Sun

Wang

2022

Materials

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In this study, a superhydrophobic surface was constructed on a copper substrate through dealloying-forming and solution-immersion methods. The dealloying process for nanostructures on a copper surface involved the electrodeposition of zinc atoms, and the thermal alloying and chemical dealloying of zinc atoms. Then, a dealloyed copper surface was subsequently modified with low-surface-energy copper stearate to produce a superhydrophobic surface. Scanning electron microscopy, X-ray diffractometry, and Fourier transform infrared spectrometry were employed to characterize the morphological features and composition components of the surface in the fabrication process. The static contact angles of the copper surfaces were compared and evaluated based on various fabrication parameters, including electric current density, corrosive solution concentration, and nanostructures. The results indicated that a leaf-like copper stearate could be constructed through immersing a dealloyed copper plate into a 0.005 mol/L ethanol solution of stearic acid for 5 min. Nanostructures provided more attachment areas on the copper surface to facilitate the formation of copper stearate. The resulting as-prepared surface presented excellent superhydrophobic properties with a contact angle of over 156.5°, and showed the potential properties of non-sticking, self-cleaning, anti-corrosion, and stability. This study provides an efficient approach to fabricate superhydrophobic surfaces for engineering copper metals.

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Section: Introductionmentioning

confidence: 99%

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Sun

Wang

2022

Materials

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“…Generally, metals and alloys are the most suitable substrates for chemical etching, especially magnesium alloys or aluminum alloys (Panda, 2021;Peng et al, 2021). By controlling the concentration of etching solution and etching time, the structural characteristics of superhydrophobic surface, such as roughness, can be effectively changed (Wei et al, 2021b;Guo et al, 2021;Krishnan et al, 2021;Zheng et al, 2021) (Figure 2).…”

Section: Chemical Etching Methodsmentioning

confidence: 99%

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

Ge-Zhang

Yang

et al. 2022

Front. Bioeng. Biotechnol.

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As an emerging fringe science, bionics integrates the understanding of nature, imitation of nature, and surpassing nature in one aspect, and it organically combines the synergistic complementarity of function and structure–function integrated materials which is of great scientific interest. By imitating the microstructure of a natural biological surface, the bionic superhydrophobic surface prepared by human beings has the properties of self-cleaning, anti-icing, water collection, anti-corrosion and oil–water separation, and the preparation research methods are increasing. The preparation methods of superhydrophobic surface include vapor deposition, etching modification, sol–gel, template, electrostatic spinning, and electrostatic spraying, which can be applied to fields such as medical care, military industry, ship industry, and textile. The etching modification method can directly modify the substrate, so there is no need to worry about the adhesion between the coating and the substrate. The most obvious advantage of this method is that the obtained superhydrophobic surface is integrated with the substrate and has good stability and corrosion resistance. In this article, the different preparation methods of bionic superhydrophobic materials were summarized, especially the etching modification methods, we discussed the detailed classification, advantages, and disadvantages of these methods, and the future development direction of the field was prospected.

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“…Soon after, Wenzel developed a relationship between the macro roughness and the contact angle of a solid surface and explained how roughness can enhance hydrophobicity in 1936 [ 25 ]. Later, Cassie and Baxter (in 1944) found porous surfaces and rough surfaces that can trap air between water and a solid [ 26 ]. However, due to the limitation of technological development, the research on superhydrophobic surfaces was relatively limited.…”

Section: Superhydrophobic Coatingsmentioning

confidence: 99%

“… Chart of the major discoveries and developments in the field of superhydrophobic coatings [ 23 , 24 , 25 , 26 , 27 , 28 , 30 , 31 ]. …”

Section: Figurementioning

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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Influence of materials and fabrication strategies in tailoring the anticorrosive property of superhydrophobic coatings

Cited by 22 publications

References 210 publications

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Constructing Superhydrophobic Surface on Copper Substrate with Dealloying-Forming and Solution-Immersion Method

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

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

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