Effect of Chemical Composition of Tetraethoxysilane and Trimethoxy(Propyl)Silane Hybrid Sol on Hydrophobicity and Corrosion Resistance of Anodized Aluminum

Javanpour, Bahareh; Azadbeh, Maziyar; Mozammel, Mahdi

doi:10.1007/s12633-019-00180-y

Cited by 10 publications

(5 citation statements)

References 38 publications

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“…Note that the low surface energy material, 1H, 1H, 2H, 2H-perfluorooctyl-trichlorosilane (FOTS) with chemical structure CF 3 (CF 2 ) 5 CH 2 CH 2 SiCl 3 has been used to modify the aluminium surface in achieving superhydrophobicity. The silane head group of FOTS mainly forms a covalent bond with aluminium and its fluorocarbon chain induces superhydrophobic characteristics to the surface [54,55]. Each value reported here corresponds to an average of at least five measurements at different regions of a sample taken at ambient temperature.…”

Section: Surface Wettabilitymentioning

confidence: 99%

Effect of topography and chemical treatment on the hydrophobicity and antibacterial activities of micropatterned aluminium surfaces

Mandal

Shishodia

Ali

et al. 2020

Surf. Topogr.: Metrol. Prop.

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Superhydrophobic surfaces with high adhesion have attracted huge attention in recent research works due to their versatile applications including transportation of microdroplet without any loss. Modification of metallic surfaces to achieve such properties is important to extend their applications. Especially, the superhydrophobic surfaces with very low bacterial adhesion have attracted intense attention in medical, food, and pharmaceutical industries. Here, we have fabricated different micropatterns on aluminium surfaces using a simple and cost-effective micro-imprinting technique. The surface chemistry was modified through a coating of low surface energy material 1H, 1H, 2H, 2Hperfluorooctyl-trichlorosilane (FOTS) using vapor deposition technique. Surface morphology of the samples was investigated using scanning electron microscopy (SEM) and contact profilometer. Results show a significant influence of the surface morphology on the wetting, adhesion and anti-bacterial properties. Surfaces composed of discrete micropillars showed higher de-wetting compared to surface containing continuous zig-zag micro lines even despite lower roughness factor. However, the opposite trend was observed in case of adhesion. These results are explained based on wetting state and difference in liquid-air interface pinning. Further, the developed samples showed higher waterretaining ability compared to rose-petal along with superhydrophobicity. The surface with micropillar structures with higher roughness factor exhibited improved non-fouling behavior which has been quantified by spot assay and atomic force microscopy (AFM). This study opens up the possibility of fabricating multifunctional metal surfaces on a large scale by a cost-effective, environment friendly and easily scalable processing route.

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Section: Surface Wettabilitymentioning

confidence: 99%

Effect of topography and chemical treatment on the hydrophobicity and antibacterial activities of micropatterned aluminium surfaces

Mandal

Shishodia

Ali

et al. 2020

Surf. Topogr.: Metrol. Prop.

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“…30 The formed films act as a physical barrier restricting the penetration of corrosive species to the metal surface. 31,32 A literature survey revealed that the protection behavior of a variety of silane sol−gel coatings such as tetraethoxysilane (TEOS), 33 trimethoxypropylsilane (TMPSi), 33 3-glycidoxypropyl trimethoxysilane (GPTMS), 34 tris(2-methoxyethoxy)vinylsilane (VTMOEO), 35 3-aminopropyltriethoxysilane (APS), 36 (3-mercaptopropyl)triethoxysilane (MPTES), 37 tetraethylorthosilicate (TEOS), 38 1,2-bis(triethoxysilyl)ethane (BTSE), 39,40 and bis [3-(triethoxysilyl)propyl]tetrasulfide (TESPT) 41 have been largely studied as attractive alternatives to the chromate. These coatings are a rapidly expanding technology resulting from their main advantages: good compatibility and high adhesion to a wide range of inorganic and organic interfaces, minimal environmental impact, and competitive pricing.…”

Section: Introductionmentioning

confidence: 99%

“…A literature survey revealed that the protection behavior of a variety of silane sol–gel coatings such as tetraethoxysilane (TEOS), trimethoxypropylsilane (TMPSi), 3-glycidoxypropyl trimethoxysilane (GPTMS), tris(2-methoxyethoxy)vinylsilane (VTMOEO), 3-aminopropyltriethoxysilane (APS), (3-mercaptopropyl)triethoxysilane (MPTES), tetraethylorthosilicate (TEOS), 1,2-bis(triethoxysilyl)ethane (BTSE), , and bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT) have been largely studied as attractive alternatives to the chromate. These coatings are a rapidly expanding technology resulting from their main advantages: good compatibility and high adhesion to a wide range of inorganic and organic interfaces, minimal environmental impact, and competitive pricing. , Furthermore, another important feature of these coatings is the barrier performance against electrolyte diffusion to the substrate, which is based on forming a dense layer with a three-dimensional network of siloxane. − Several factors such as the curing time, aging, concentration, pH, and chemical structure of the silanes are the main parameters that influence the properties of the final coating. − …”

Section: Introductionmentioning

confidence: 99%

Eco-friendly Silane-Based Coating for Mitigation of Carbon Steel Corrosion in Marine Environments

2023

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Losses from corrosion contribute roughly 3–5% of the gross domestic product of developed nations, and among the many methods used to avoid corrosion, using silane-based coatings is seen to be of the biggest importance due to their low toxicity and superior adhesive qualities. It is essential to develop an anti-corrosion coating that is efficient, economical, and eco-friendly. The corrosion resistance and durability of various silane-based coatings such as 1,2-bis(triethoxysilyl)ethane (BTSE), bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT), and vinyltrimethylsilane (VTES) for carbon steel 1018 substrates were investigated in a high-salinity environment (4.5 wt % NaCl). The corrosion resistance performance was evaluated via potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques. Results revealed that the TESPT film (pH ≈ 7) has the best corrosion resistance performance on the carbon steel surface in the aggressive chloride environment, that is, 99.6%. The high corrosion resistance of the TESPT film is due to the hydrophobic nature of this silane, which leads to the formation of a stable and dense film. These results were supported by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) analyses.

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“…Usually, the durability of the coatings and hydrophobic or superhydrophobic effect is determined during various abrasion tests and immersion in solutions of different pH [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. The main aim of this study was to test the durability of aluminum-based coatings in natural conditions.…”

Section: Introductionmentioning

confidence: 99%

Durability and Additional Properties of Anodized Aluminum-Based Coatings with Different Wettability under Natural Conditions

et al. 2023

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The study aimed to test the durability of coatings under natural conditions. The present study focused on the changes in wettability and additional properties of the coatings under natural conditions. The specimens were subjected to outdoor exposure and additionally immersed in the pond. Impregnating porous anodized aluminum is a popular production method for hydrophobic and superhydrophobic surfaces. However, prolonged exposure of such coatings to natural conditions causes leaching of the impregnate and, thus, the loss of hydrophobic properties. After the loss of hydrophobic properties, all kinds of impurities and fouling adhere better to the porous structure. Additionally, deterioration of anti-icing and anti-corrosion properties was observed. Finally, the self-cleaning, anti-fouling, anti-icing and anti-corrosion properties were comparable or even worse to those of the hydrophilic coating. In the case of superhydrophobic specimens, during outdoor exposure there was no loss of superhydrophobicity, self-cleaning and anti-corrosion properties. Still, despite this, the icing delay time dropped. During outdoor exposure, the structure, which initially had anti-icing properties, may degrade. Nevertheless, the hierarchical structure responsible for the superhydrophobic effect can still be preserved. The superhydrophobic coating initially had the best anti-fouling properties. However, the coating was also gradually losing its superhydrophobic properties during water immersion.

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Effect of Chemical Composition of Tetraethoxysilane and Trimethoxy(Propyl)Silane Hybrid Sol on Hydrophobicity and Corrosion Resistance of Anodized Aluminum

Cited by 10 publications

References 38 publications

Effect of topography and chemical treatment on the hydrophobicity and antibacterial activities of micropatterned aluminium surfaces

Effect of topography and chemical treatment on the hydrophobicity and antibacterial activities of micropatterned aluminium surfaces

Eco-friendly Silane-Based Coating for Mitigation of Carbon Steel Corrosion in Marine Environments

Durability and Additional Properties of Anodized Aluminum-Based Coatings with Different Wettability under Natural Conditions

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