Facile transition from hydrophilicity to superhydrophilicity and superhydrophobicity on aluminum alloy surface by simple acid etching and polymer coating

Liu, Wenyong; Sun, Linyu; Luo, Yuting; Wu, Ruomei; Jiang, Haiyun; Chen, Yi; Zeng, Guangsheng; Liu, Yuejun

doi:10.1016/j.apsusc.2013.04.124

Cited by 40 publications

(18 citation statements)

References 52 publications

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“…Large CA value measured on pure Al foils, as high as 87.7°, attracts a vast interest because water preferably spreads on surfaces with a high free energy [16] and, therefore, aluminium as a high surface-energy metallic material is expected to be hydrophilic. Indeed, only scarce literature data [17,18] contradict numerous experimental studies [1,4,5] where samples of Al and its alloys are reported to exhibit small CAs values, despite different preparation methods. At first glance, the large CAs values observed here on pure Al could be attributed to a presence of hydrophobic organic contaminants [19] or aluminium oxides and hydroxides [20] at its surface after an exposure to atmosphere.…”

Section: Resultsmentioning

confidence: 96%

“…and microelectronics. In particular, a lot of attention has been paid to wettability behaviour of aluminium-based alloys [1][2][3] due to its high thermal and electrical conductivity, low specific weight, low contact resistance as well as non-toxicity and beneficial effects of small amounts of alloying elements on electrochemical properties. Therefore, both from the scientific point of view and the technical side an in-depth understanding of mechanisms which affect the wettability of solid surfaces is of great importance to tailor such properties of engineering and electronic aluminium materials as adhesion, anticorrosion, catalysis, to name a few.…”

Section: Introductionmentioning

confidence: 99%

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Effect of topography on wettability of rapidly solidified Al-In alloys

Tashlykova-Bushkevich

Yakovenko

Bushkevich

2016

ELECTROTECHNICAL REVIEW

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The wettability of rapidly solidified foils of Al-In alloys containing up to 4.7 at.% of In was investigated by means of sessile-drop method and atomic force microscopy. It was found that In significantly changes wetting properties of pure Al from a hydrophobic behaviour to a hydrophilic one. The effect of topography on the wetting properties of nano-rough foils demonstrates that an increase in In content up to 0.7 at.% resulted in a transition from a homogeneous to a heterogeneous wetting behaviour when decreasing the roughness of the surface makes it more hydrophilic. Streszczenie. Zwilżalność szybko skrystalizowanych foli stopu Al-In zawierających In do 4,7 at.% została zbadana za pomocą metody "siedzącej kropli" oraz mikroskopii sił atomowych. Określono, że dodatek In znacząco zmienia właściwości zwilżające czystego Al z hydrofobowych na hydrofilowe. Wpływ topografii na właściwości zwilżające nano-chropowatych folii przedstawia, że wzrost zawartości In do 0,7 at.% skutkuje w zmianie właściwości zwilżających z homogenicznych na heterogeniczne oraz zwiększająca się chropowatość powierzchni powoduje, że stają się one hydrofilowe. (Wpływ topografii powierzchni na zwilżalność szybko skrystalizowanego stopu Al-In).

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Effect of topography on wettability of rapidly solidified Al-In alloys

Tashlykova-Bushkevich

Yakovenko

Bushkevich

2016

ELECTROTECHNICAL REVIEW

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“…Chemicals that are used for these modifications include fluorocarbons [12], stearic acid [5,6,18,24], polypropylene [25], and silanes [7,26]. …”

Section: Introductionmentioning

confidence: 99%

Preparation of Textured Surfaces on Aluminum-Alloy Substrates

et al. 2018

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The ways of producing porous-like textured surfaces with chemical etching on aluminum-alloy substrates were studied. The most appropriate etchants, their combination, temperature, and etching time period were explored. The influence of a specifically textured surface on adhesive joints’ strength or superhydrophobic properties was evaluated. The samples were examined with scanning electron microscopy, profilometry, atomic force microscopy, goniometry, and tensile testing. It was found that, with the multistep etching process, the substrate can be effectively modified and textured to the same morphology, regardless of the initial surface roughness. By selecting proper etchants and their sequence one can prepare new types of highly adhesive or even superhydrophobic surfaces.

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“…Superhydrophobic surfaces show excellent water repellency with a water contact angle (WCA) ≥ 150° and a sliding angle <10° . They have been inspired by nature; some biological systems, such as lotus leaves, exhibit this effect .…”

Section: Introductionmentioning

confidence: 99%

“…Superhydrophobic surfaces show excellent water repellency with a water contact angle (WCA) ≥ 150°and a sliding angle <10°. 1 They have been inspired by nature; some biological systems, such as lotus leaves, exhibit this effect. 2 Superhydrophobic surfaces have attracted considerable attention in a wide range of applications, such as anti-corrosion surfaces, 3 self-cleaning surfaces, 4 and anti-icing surfaces.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic and oleophilic micro‐nano hierarchical Pd‐decorated SiO₂ layers

et al. 2018

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This paper reports a novel fluorinated micro‐nano hierarchical Pd‐decorated SiO2 structure (hereafter called Pd/SiO2), which was formed by the deposition of Pd nanoparticles (NPs) on SiO2 microspheres. The SiO2 layers with microscale roughness were fabricated by electrospraying a solution prepared using the sol‐gel process. Subsequently, the Pd NPs were deposited using an ultraviolet reduction process. The resulting surfaces exhibited a micro‐nano hierarchical morphology. After fluorination, the micro‐nano hierarchical surface exhibited outstanding water repellency with a water contact angle (WCA) of 170° and a sliding angle <5°, indicating excellent superhydrophobic properties. The layers exhibited good long‐term durability and excellent ultraviolet resistance. Interestingly, the surface was oleophilic (CA of oil ~10°). These results show the potential of employing superhydrophobic fluorinated Pd/SiO2 layers in smart devices, such as self‐cleanable surfaces and intelligent water/oil separation systems.

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Facile transition from hydrophilicity to superhydrophilicity and superhydrophobicity on aluminum alloy surface by simple acid etching and polymer coating

Cited by 40 publications

References 52 publications

Effect of topography on wettability of rapidly solidified Al-In alloys

Effect of topography on wettability of rapidly solidified Al-In alloys

Preparation of Textured Surfaces on Aluminum-Alloy Substrates

Superhydrophobic and oleophilic micro‐nano hierarchical Pd‐decorated SiO₂ layers

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Facile transition from hydrophilicity to superhydrophilicity and superhydrophobicity on aluminum alloy surface by simple acid etching and polymer coating

Cited by 40 publications

References 52 publications

Effect of topography on wettability of rapidly solidified Al-In alloys

Effect of topography on wettability of rapidly solidified Al-In alloys

Preparation of Textured Surfaces on Aluminum-Alloy Substrates

Superhydrophobic and oleophilic micro‐nano hierarchical Pd‐decorated SiO2 layers

Contact Info

Product

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Superhydrophobic and oleophilic micro‐nano hierarchical Pd‐decorated SiO₂ layers