Control of laser-ablated aluminum surface wettability to superhydrophobic or superhydrophilic through simple heat treatment or water boiling post-processing

Ngo, Chi-Vinh; Chun, Doo‐Man

doi:10.1016/j.apsusc.2017.11.185

Cited by 131 publications

(68 citation statements)

References 56 publications

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“…Ngo and Chun fabricated grid patterns on aluminum using a nanosecond pulse laser. After heat treatment, the as-prepared surface became superhydrophobic with a CA of 176 • and an SA of 6 ± 1 • [21]. However, few studies explored the corrosion resistance of SHS.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Self-Cleaning Superhydrophobic Surfaces with Improved Corrosion Resistance on 6061 Aluminum Alloys

Dong

Meng

et al. 2020

Micromachines

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Aluminum alloys are widely used, but they are prone to contamination or damage under harsh working environments. In this paper, a self-cleaning superhydrophobic aluminum alloy surface with good corrosion resistance was successfully fabricated via the combination of sand peening and electrochemical oxidation, and it was subsequently covered with a fluoroalkylsilane (FAS) film. The surface morphology, surface wettability, and corrosion resistance were investigated using a scanning electron microscope (SEM), an optical contact angle measurement, and an electrochemical workstation. The results show that binary rough structures and an FAS film with a low surface energy on the Al alloy surfaces confer good superhydrophobicity with a water contact angle of 167.5 ± 1.1 • and a sliding angle of 2.5 ± 0.7 • . Meanwhile, the potentiodynamic polarization curve shows that the corrosion potential has a positively shifted trend, and the corrosion current density decreases by three orders of magnitude compared with that of the original aluminum alloy sample. In addition, the chemical stability of the as-prepared superhydrophobic surface was evaluated by dripping test using solutions with different pH values for different immersion time. It indicates that the superhydrophobic surface could provide long-term corrosion protection for aluminum alloys. Consequently, the as-prepared superhydrophobic surface has excellent contamination resistance and self-cleaning efficacy, which are important for practical applications.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Self-Cleaning Superhydrophobic Surfaces with Improved Corrosion Resistance on 6061 Aluminum Alloys

Dong

Meng

et al. 2020

Micromachines

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“…Recently, super-hydrophobic surfaces have aroused tremendous interest in academic research and potential applications in industry owing to their great importance, such as self-cleaning capability [1], drag reduction [2], water/oil separation [3], corrosion resistance [4] and so on. Generally, super-hydrophobic surfaces present a water contact angle (WCA) over 150° with the lotus effect (rolling angle (RA) below 10°) or the pinning effect (no RA or RA above 10°) [5][6]. Studies on natural creatures with super-hydrophobic surfaces reveal that the presence of micro/nanostructured surface morphology is the main cause for constructing special surface wettability [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of super-hydrophobic nickel film on copper substrate with improved corrosion inhibition by electrodeposition process

Yang

Liu

Tian

2019

Colloids and Surfaces A: Physicochemical and Engineering Aspect

120

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“…Chi-vinh Ngo's laboratory explored ways to slow the transition and found that after 2 h in a boiling water bath. The transition from hydrophilic aluminum surface to hydrophobic surface was significantly inhibited [4].…”

Section: Introductionmentioning

confidence: 98%

“…However, the contact angle of some superhydrophilic surface has reached 0°. At this time, the performance of this kind of superhydrophilic surfaces was further judged by comparing the time from the contact of water droplets with the material surface to its completely absorbed by the surface of the material [4].…”

Section: Introductionmentioning

confidence: 99%

Rapid laser fabrication of long-term stable superhydrophilic aluminum surface

et al. 2020

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A simple method for fabricating stable superhydrophilic aluminum surface is reported in this paper. Controllable micronanostructures were prepared on the surface of aluminum plate by nanosecond laser and then soaked in boiled 45% ethanol solution for 2 h as the post-treatment. It is demonstrated that the laser-ablated aluminum plate surface is hydrophilic and then switch to superhydrophilic after a 45% ethanol solution post-treatment. The treated superhydrophilic structure has good hydrophilic stability in a certain period of time. The mechanism of superhydrophilic behavior of aluminum surface treated with laser and ethanol solution was discussed. A new method for preparing stable superhydrophilic surface is proposed in this paper, which is of great significance for the preparation of superhydrophilic surface and the application of superhydrophilic surface in industrial production.

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Control of laser-ablated aluminum surface wettability to superhydrophobic or superhydrophilic through simple heat treatment or water boiling post-processing

Cited by 131 publications

References 56 publications

Fabrication of Self-Cleaning Superhydrophobic Surfaces with Improved Corrosion Resistance on 6061 Aluminum Alloys

Fabrication of Self-Cleaning Superhydrophobic Surfaces with Improved Corrosion Resistance on 6061 Aluminum Alloys

Fabrication of super-hydrophobic nickel film on copper substrate with improved corrosion inhibition by electrodeposition process

Rapid laser fabrication of long-term stable superhydrophilic aluminum surface

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