Robust and anti-corrosive PDMS/SiO2 superhydrophobic coatings fabricated on magnesium alloys with different-sized SiO2 nanoparticles

Xie, Jian; Hu, Jia; Lin, Xudong; Fang, Liang; Wu, Fang; Liao, Xiaoling; Luo, Hai; Shi, Liuting

doi:10.1016/j.apsusc.2018.06.250

Cited by 163 publications

(59 citation statements)

References 54 publications

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“…In other words, enhancing structural stability contributes to resist the external force to maintain original facial structures. The recently reported manners have been used to character such stability includes: linear abrasion [86], tape-peeling [55], knife scratching [87], finger pressing [88], bending [89], etc. Although so many approaches have been published for testing, there is still lack of standardization to make comparison of different surfaces.…”

Section: Mechanical Stabilitymentioning

confidence: 99%

“…Generally, particles or debris peeled off from the substrate indicates the structures are damaged and super-hydrophobicity may be failed [97]. Porous, loose, and uncompact surfaces can hardly bear such tear force (~300 N/m), whereas there is little influence on the surfaces like fluorination treated aluminum oxide [55], methyltrichlorosilane-Fe [89], FAS-17 modified rough steel [86], HVOF TiO 2 /h-BN coating [97], and micro-nanostructure PDMS/SiO 2 composite coatings on Mg substrate [88], which demonstrates their robustness.…”

Section: Mechanical Stabilitymentioning

confidence: 99%

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Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Zhao

et al. 2019

Coatings

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Corrosion—reactions occuring between engineering materials and their environment—can cause material failure and catastrophic accidents, which have a serious impact on economic development and social stability. Recently, super-hydrophobic coatings have received much attention due to their effectiveness in preventing engineering materials from further corrosion. In this paper, basic principles of wetting properties and corrosion protection mechanism of super-hydrophobic coatings are introduced firstly. Secondly, the fabrication methods by electrochemical surface engineering—including electrochemical anodization, micro-arc oxidation, electrochemical etching, and deposition—are presented. Finally, the stabilities and future directions of super-hydrophobic coatings are discussed in order to promote the movement of such coatings into real-world applications. The objective of this review is to bring a brief overview of the recent progress in the fabrication of super-hydrophobic coatings by electrochemical surface methods for corrosion protection of engineering materials.

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Section: Mechanical Stabilitymentioning

confidence: 99%

Section: Mechanical Stabilitymentioning

confidence: 99%

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Zhao

et al. 2019

Coatings

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“…Up to now, numerous methods of constructing superhydrophobic surface on magnesium alloys have been proposed, such as electrodeposition, [6][7][8][9][10][11][12] micro-arc oxidation, [13][14][15] chemical conversion treatment, [2,16] hydrothermal method, [17][18][19][20][21][22] immersion method, [23,24] laser ablation, [25] electroless plating, [26] dip coating, [27] spray coating, [28,29] et al Among these various methods, spray-coating technique is a fast, facile method to fabricate coatings on a large-scale, which has been widely used in industry for coating complex shapes on different substrates. [28,29] Organosiloxane is a promising candidate for the preparation of wear-resistant superhydrophobic materials due to its polymerization to enhance the mechanical durability and strong adhesion to the substrate. 3-glycidyloxypropyltrimethoxysilane (GPTMS) is one kind of organoalkoxysilane with an epoxy functional group, extensively employed in hybrid sol-gel coatings.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Silane/Fluorinated Attapulgite@SiO₂ Composite Coatings on Magnesium Alloy for Corrosion Protection

Wang

Zhang

et al. 2020

ChemistrySelect

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To improve the corrosion resistance of magnesium alloys, superhydrophobic coatings were prepared by employing fluorinated attapulgite@SiO2 (F‐ATP@SiO2) particles and silanes via a facile one‐step spraying technique in this study. Surface morphology, chemical compositions, roughness and wettability of the coatings were comprehensively investigated by Field emission scanning electron microscopy (FESEM), Fourier transform infrared spectra (FTIR), 3D optical microscope and contact angle techniques, respectively. Corrosion resistance of the coatings was evaluated by potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS). Results indicated that the coatings exhibited superhydrophobicity due to its micron scale mastoid structure and low surface energy of F‐ATP@SiO2 particles. The superhydrophobicity and anticorrosion performance of the coatings increased with the dosage increase of F‐ATP@SiO2 particles. The water contact angle of the prepared surface can reach as high as 161° with sliding angle of 4°. Icorr of the coatings can reach 5.519×10−8 A cm−2, decreased by 3 orders of magnitude compared to bare AZ31, which showed excellent anticorrosion performance. With the prolongation of immersion time, the EIS analysis indicated that the anticorrosion property of the coating degraded gradually. Based on the electrochemical analysis, the corrosion protection mechanism of the superhydrophobic coating was proposed.

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“…Multifunctional coating system can be designed by optimum selection of base polymer materials, which perform as barrier layer and reinforcing agents that prohibit the diffusion of corrosive media into the base matrix . In order to impart additional benefits of improved hydrophobicity, corrosion and fouling resistance, polymer coatings are reinforced with various nanoparticles . The size and geometry of nanoparticles play a pivotal role in imparting antibacterial, corrosion resistant, and various other properties to the coatings .…”

Section: Introductionmentioning

confidence: 99%

Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

Verma

Das²,

Mohanty

et al. 2019

Polymers for Advanced Techs

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Multifunctional epoxy-polydimethylsiloxane nanocomposite coatings with antifouling and anticorrosion characteristics have been developed via in situ polymerization method at different loading (1, 3, and 6.5 wt.%) of ZnO nanoparticles to cater marine applications. A detailed comparative analysis has been carried out between epoxy-polydimethylsiloxane control (EPC) and ZnO-reinforced coatings to determine the influence of ZnO loading on various properties. The incorporation of ZnO in EPC led to increase in root mean square (RMS) roughness to 126.75 nm and improved hydrophobicity showing maximum contact angle of 123.5°with low surface energy of 19.75 mN/m of nanocomposite coating as compared with control coating. The differential scanning calorimetry (DSC) result indicated improved glass transition temperature of nanocomposite coatings with highest T g obtained at 83.69°C in case of 1 wt.% loading of ZnO. The increase in hydrophobicity of the system was accompanied by upgraded anticorrosion performance exhibiting 98.8% corrosion inhibition efficiency (CIE) as compared with control coating and lower corrosion rate of 0.12 × 10 −3 mm/year. The Taber abrasion resistance and pull-off adhesion strength results indicated an increment of 34.7% and 150.7%, respectively, in case of nanocomposite coating as compared with the control coating.The hardness of nanocomposite coatings was also improved, and maximum hardness was found to be 65.75 MPa for nanocomposite coating with 1 wt.% of ZnO.Our study showed that the nanocomposite coating was efficient in inhibiting accumulation of marine bacteria and preventing biofouling for more than 8 months. The developed environment-friendly and efficient nanocomposite material has a promising future as a high-performance anticorrosive and antifouling coating for marine applications. | MATERIALSEP resin, i.e., DGEBA, Araldite GY-251 with EP equivalent value ranging from 180 to 189 g/eq and EP value of 5.30 to 5.55 eq/Kg, and hardener triethylene tetra amine (TETA, Aradur HY-951) with amine value 24.04 g/eq were purchased from M/s. Huntsman Int Pvt Ltd, Mumbai, India. PDMS-hydroxy terminated (h-PDMS) with dynamic viscosity of 25 centistokes and density value 0.95 g/mL at temperature of 25°C and APTES (3-aminopropyltriethoxysilane), assay (99%) and density value of 0.946 g/mL at 25°C (lit.) were procured from M/s. Sigma Aldrich Pvt Ltd, India. ZnO nanoparticle with average particle size of approximately 20 nm were purchased from M/s. Sisco

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Robust and anti-corrosive PDMS/SiO2 superhydrophobic coatings fabricated on magnesium alloys with different-sized SiO2 nanoparticles

Cited by 163 publications

References 54 publications

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Superhydrophobic Silane/Fluorinated Attapulgite@SiO₂ Composite Coatings on Magnesium Alloy for Corrosion Protection

Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

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Robust and anti-corrosive PDMS/SiO2 superhydrophobic coatings fabricated on magnesium alloys with different-sized SiO2 nanoparticles

Cited by 163 publications

References 54 publications

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Superhydrophobic Silane/Fluorinated Attapulgite@SiO2 Composite Coatings on Magnesium Alloy for Corrosion Protection

Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

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Superhydrophobic Silane/Fluorinated Attapulgite@SiO₂ Composite Coatings on Magnesium Alloy for Corrosion Protection