Superhydrophobic coating deposited directly on aluminum

Escobar, Ana M.; Llorca-Isern, Núria

doi:10.1016/j.apsusc.2014.03.196

Cited by 64 publications

(35 citation statements)

References 42 publications

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“…Fig. 40,45,47 The dislocations could possess relatively high energy than other locations, which are more vulnerable to hydrochloric acid etchant. Evidently, many incompletable pits with micro-scale concave-convex structures emerge aer being etched for 2 min.…”

Section: Resultsmentioning

confidence: 99%

“…36,37 Different from the hydrophilic solid surface, superhydrophobic substrates show a brand-new substrate-airwater contacting interface, which offers a possibility to isolate metal substrates from the corrosive medium to improve their corrosion resistance. 45 Feng et al have fabricated superhydrophobic surfaces with corrosion resistance on LD6063 aluminum alloy substrate by boiling water etching treatment and stearic acid modication. [38][39][40][41][42][43][44] For example, Escobar et al has fabricated superhydrophobic surfaces with an improved corrosion resistance on pure commercial aluminum substrate by ethanol solution of hydrochloric acid etching and lauric acid modication.…”

Section: Introductionmentioning

confidence: 99%

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Low-cost and large-scale fabrication of a superhydrophobic 5052 aluminum alloy surface with enhanced corrosion resistance

Zhang

Guo

et al. 2015

RSC Adv.

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Superhydrophobic 5052 aluminum alloy substrates with excellent corrosion resistance have been fabricated by a simple and low-cost method of acid treatment and modification of fluoroalkyl-silane combined with surface passivation. Via an etching process with hydrochloric acid, hierarchical convexconcave micro/nano-structures have been formed on 5052 aluminum alloy surfaces. Then they were covered with a flocculent layer after passivation with potassium permanganate. The wettability and corrosion resistance of the as-prepared substrates have been systematically investigated. The results indicate that aluminum alloy substrates with an etching time of 5 min and passivation time of 180 min exhibit good superhydrophobicity with a water contact angle of 153 AE 0.7 . In addition, corrosion resistance was also explored by potentiodynamic polarization curves and electrochemical impedance spectroscopy. Clearly, the corrosion resistance of the as-prepared aluminum alloy substrates has been greatly enhanced, which will be positive to extend further the applications of Al alloys in engineering fields, such as shipbuilding and oceanographic engineering.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low-cost and large-scale fabrication of a superhydrophobic 5052 aluminum alloy surface with enhanced corrosion resistance

Zhang

Guo

et al. 2015

RSC Adv.

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“…For the PAAs surface modification by lauric acid the cleaned samples were immersed vertically into a fresh ethanol solution of lauric acid (20 g/L) for about 15 min and 50 °C with gentle stirring. After that, the samples were immediately rinsed with ethanol and deionized water, and were subsequently placed in an oven for 30 min at 80°C[24]. For PAAs silanization the same approach as in ref [25]…”

mentioning

confidence: 99%

Controlling of water wettability by structural and chemical modification of porous anodic alumina (PAA): Towards super-hydrophobic surfaces

Norek

Krasiński

2015

Surface and Coatings Technology

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“…15 Nowadays, processes involving chemical interactions with the substrate (for example, chemical etching 16 or surface coatings) are widely used in industry in order to obtain hydrophobic properties. However, generally coatings lack resistance to constant wear.…”

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confidence: 99%

Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

et al. 2017

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aMicro cell structures of different sizes were patterned using a nanosecond near-infrared laser source on Al2024 aluminium alloy plates with 2 mm thickness. The influence of laser parameters on the shape and size of the produced patterns were studied together with the evolution of wettability properties over time for different storage conditions. Samples were found to be superhydrophobic from a single step laser patterning, requiring no further treatment. Exposure to ambient air was shown to be a key factor in the property changes of the samples over time. The produced surface patterns with different laser parameter settings were correlated with the contact angle measurements, revealing a great influence of the amount of recast material on the hydrophobic properties. X-Ray photoelectron spectroscopy was used to study the impact of surface chemistry changes on hydrophobicity, analysis of elemental composition proved that chemisorbed organic molecules present in the ambient air were responsible for the hydrophilic to superhydrophobic transition.

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Superhydrophobic coating deposited directly on aluminum

Cited by 64 publications

References 42 publications

Low-cost and large-scale fabrication of a superhydrophobic 5052 aluminum alloy surface with enhanced corrosion resistance

Low-cost and large-scale fabrication of a superhydrophobic 5052 aluminum alloy surface with enhanced corrosion resistance

Controlling of water wettability by structural and chemical modification of porous anodic alumina (PAA): Towards super-hydrophobic surfaces

Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

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