Fabrication and wear protection performance of superhydrophobic surface on zinc

Wan, Yong; Wang, Zhongqian; Zhen, Xu; Liu, Changsong; Zhang, Junyan

doi:10.1016/j.apsusc.2011.03.060

Cited by 21 publications

(4 citation statements)

References 27 publications

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“…[ 31 ] The tribological properties of dry and submerged superhydrophobic surfaces against steel and tungsten probes have been studied before, and their coefficients of friction have been in the range of μ = 0.01–0.08. [ 32–34 ] Here, we show that superhydrophobic surfaces used in tandem with hydrophilic surfaces can create a lubricating system based on a water–air bilayer. We achieve superlubricity (μ < 0.01) at low velocities ( v < 0.1 m s −1 ) with friction coefficient values down to 0.002 with pure water and ambient air as lubricant and under light loads.…”

Section: Introductionmentioning

confidence: 93%

Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Nurmi

Toptunov³

et al. 2022

Adv Materials Inter

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Lubrication is one of the most important ways to reduce the effect of friction, which is the single largest cause for energy losses in society. Typically, friction reduction is done by lubrication with petroleum‐based oils, while technology focus is shifting toward environmentally‐friendly green lubrication. Lowest friction coefficients with water‐based lubrication have previously been achieved with smooth surfaces such as silicon carbide and silicon nitride or polyzwitterionic polymer brushes with typical coefficients of friction in the order of 0.002. Here, a novel concept for green lubrication using a bilayer of water and ambient air acting as the lubricant between a hydrophilic and superhydrophobic surface is shown. This method achieves superlubricity with friction coefficients down to 0.002 as measured with oscillating tribometer and tilting stage. In addition, possible applications for superhydrophobic lubrication such as tunable lubrication and a 2D mouse treadmill, are shown.

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Section: Introductionmentioning

confidence: 93%

Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Nurmi

Toptunov³

et al. 2022

Adv Materials Inter

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“…The fabrication of super hydrophobic lm on zinc, silicon and steel was developed by a prehydrolized methanol solution of (1H,1H,2H,2H-(peruorooctyl)-trichlorosilane [CF 3 (CF 2 ) 5 (CH 2 ) 2 SiCl 3 ]) PFTS. 201 The fabrication of a stable super hydrophobic surface with longterm wear resistance on zinc substrates was discussed by Wan et al 202 They modied the surface with uoroalkyl silane for achieving a high water contact angle. In the case of copper foil, the growth of CuO/Cu 2 O nano structures is essential for achieving stability of super hydrophobic lm.…”

Section: Deposition Technique 471 Solution Immersion Techniquementioning

confidence: 99%

Recent progress in fabrication and characterisation of hierarchical biomimetic superhydrophobic structures

2014

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“…Wettability of a surface is determined by the water contact angle (WCA) θ, which is the angle between the solid/air and the liquid/air interfaces, and generally all surfaces can be classified based on their WCA values in terms of hydrophilic (θ<90°), hydrophobic (θ>90°), or superhydrophobic (θ>150°) states [1]. Among these, hydrophobicity and superhydrophobicity have a wide range of applications in different areas, e.g., anti-corrosion [2], self-cleaning and friction reduction [3]. Since stainless steel has many promising properties [4][5][6], altering the wettability of its surface is of high importance.…”

Section: Introductionmentioning

confidence: 99%

Modification of stainless steel by Cu₂O coating for hydrophobic applications: a morphological study

Foadi¹,

Kalhori²

2020

Surf. Topogr.: Metrol. Prop.

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Wetting properties of the 304 stainless steel indicate a hydrophilic nature. In this study, two methods including Cu 2 O thin film coating and chemical etching process have been applied on stainless steel substrates in order to fabricate hydrophobic surfaces. Cu 2 O films were synthesized using spray pyrolysis method at different deposition temperatures and different 2-propanol concentrations. X-ray diffraction (XRD) patterns obtained for the surfaces prepared at different temperatures showed different copper oxide phases well. In addition to XRD results for the samples prepared at different 2-propanol concentrations, the value of optical band gap for these surfaces calculated from UV-Vis spectra confirmed formation of Cu 2 O structure. Statistical parameters of the surfaces were calculated using atomic force microscopy (AFM) data including rms roughness σ, roughness exponent α and correlation length x. A similar behaviour was found between water contact angle and local surface slope r s x » a ( )of thin films. However, in the etching process of steel substrates, the effect of substrate roughness in obtaining water contact angle as high as ≈115°on the Cu 2 O surface was well established. The morphological properties of these latter surfaces were also studied by scanning electron microscopy (SEM). Generally, knowing statistical information of surface as well as chemical manipulations can be helpful to reach optimal conditions for synthesis of a hydrophobic surface.

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Fabrication and wear protection performance of superhydrophobic surface on zinc

Cited by 21 publications

References 27 publications

Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Recent progress in fabrication and characterisation of hierarchical biomimetic superhydrophobic structures

Modification of stainless steel by Cu₂O coating for hydrophobic applications: a morphological study

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Fabrication and wear protection performance of superhydrophobic surface on zinc

Cited by 21 publications

References 27 publications

Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Superhydrophobic Lubrication: Gas–Liquid Bilayer Reduces the Friction Between Two Solids

Recent progress in fabrication and characterisation of hierarchical biomimetic superhydrophobic structures

Modification of stainless steel by Cu2O coating for hydrophobic applications: a morphological study

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Modification of stainless steel by Cu₂O coating for hydrophobic applications: a morphological study