Research on HS‐WEDM and chemical etching technology of superamphiphobic surfaces on Al substrates

Lian, Zhongxu; Xu, Jinkai; Wang, Zuobin; Weng, Zhankun; Wan, Yanling; Zhang, Linshuai; Yu, Huadong

doi:10.1049/mnl.2015.0573

Cited by 13 publications

(2 citation statements)

References 25 publications

(22 reference statements)

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“…The fabrication of SAP coatings generally involves the roughening surfaces and modification by low surface-free-energy species; usually from fluorinated compounds [29]. With this regard, various approaches such as chemical etching [30], self-assembly [31], templating [32], chemical vapor deposition [33], and spay-coating [32,34] have been developed to fabricate SAP coatings. Among these protocols, the wet-chemical processes by dip-coating and spray-coating are of particular interest due to the great convenience for large-scale manufacturing with low reliance on equipment [32,[35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Robust superamphiphobic coatings with gradient and hierarchical architecture and excellent anti-flashover performances

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Robust superamphiphobic coatings with gradient and hierarchical architecture and excellent anti-flashover performances

et al. 2022

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“…1 To achieve low surface energy on any surface, fluorine-based polymers and fatty acids are used. 1 Several methods have been employed lately to create dual-scale surface roughness such as chemical etching, 2 lithography, 3 laser etching, 4 plasma etching, 5 nanoparticles, 6 etc. A schematic representation of the fabrication of the superamphiphobic surface is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Singh

Kango

Sharma

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Superamphiphobic (water and oil repellent) surfaces have distinct application areas such as anti-corrosion, anti-friction, anti-icing, self-cleaning, etc. To fabricate these types of surfaces, the base material must have low surface energy and dual-scale roughness (micro and nano levels). The durability of such surfaces is indicated by the duration up to which they remain stable and effective. When mechanical forces interact with these surfaces, it deteriorates the surface integrity and ultimately degrades its superamphiphobic property. Hence, these surfaces have very limited mechanical wear sturdiness and long-term durability. Therefore, in this article, efforts have been made to review the different types of mechanical durability tests performed on superamphiphobic metallic and non-metallic surfaces. Moreover, various kinds of surface texturing techniques in context with durability of such surfaces have been discussed. Finally, from the reported literature, critical conclusions, challenges, and scopes for future work have also been presented.

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The influence of submillimeter morphological variations on the wettability of WEDM-fabricated dual-scale roughness aluminum alloy 6082 surfaces

Skondras-Giousios,

Karmiris-Obratański,

Jarosz

et al. 2024

Int J Adv Manuf Technol

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Deriving inspiration from natural hierarchical superhydrophobic surfaces, multi-scale structures were manufactured on AA6082 surfaces via wire electrical discharge machining (WEDM), featuring microscale texture due to spark erosion, superimposed upon a wide-range simple and more complicated geometries of submillimeter profiles. The effect that the higher-order scale morphologies had on wettability was investigated. The dual-scale morphology elevated the hydrophobicity of the surfaces compared to single-scale or unmodified surfaces, reaching superhydrophobicity (151°) in the case of a certain triangular profile. Rectangular and triangular profiles facilitated the higher contact angles, while re-entrant geometries were able to totally prevent cavity wetting. A correlation of static contact angle with roughness parameters of the larger scale such as Ra, Rz, Rp, Rsk, and Rku for certain geometry configurations was identified. Peak hydrophobicity resulted at Ra = 70 μm, Rz = 240 μm, and Rp = 160 μm concerning simple geometries. Negative Rsk and Rku > 1.5 affected negatively contact angle of samples. All investigated tested types were found to reach higher hydrophobicity at moderate drop volumes (5 μl). The fabricated samples were anisotropic in at least two directions, showing decreased hydrophobicity in the front, parallel to the groove direction. When tested in multi-directional dynamic tilting up to 90°, the more complicated geometries were able to retain resistance to spreading. All samples demonstrated superliquiphilicity with lower surface tension liquids, making them strong candidate in applications such as oil/water separation. Finally, all samples tested sustained their hydrophobic character subsequent to a 3-month atmospheric exposure period.

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Research on HS‐WEDM and chemical etching technology of superamphiphobic surfaces on Al substrates

Cited by 13 publications

References 25 publications

Robust superamphiphobic coatings with gradient and hierarchical architecture and excellent anti-flashover performances

Robust superamphiphobic coatings with gradient and hierarchical architecture and excellent anti-flashover performances

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

The influence of submillimeter morphological variations on the wettability of WEDM-fabricated dual-scale roughness aluminum alloy 6082 surfaces

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