Superhydrophobic surface constructed on electrodeposited silica films by two-step method for corrosion protection of mild steel

Xue-fen, Zhang; Chen, Ruijiao; Hu, Ji-Ming

doi:10.1016/j.corsci.2015.12.028

Cited by 84 publications

(30 citation statements)

References 47 publications

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“…OIH sol-gel coatings with superhydrophobic properties for corrosion mitigation have been reported for different substrates, such as aluminum [295,311,[314][315][316][317][318], copper [225,319], magnesium [320], mild steel [321,322] and stainless steel [323]. Generally, OIH sol-gel coatings show improved UV and thermal stability when compared to organic coatings due to the high strength of the Si-O bond.…”

Section: Coatings With Superhydrophobic Functionmentioning

confidence: 99%

“…The two-step coating deposition was performed using dip-coating technique. The authors obtained a superhydrophobic coating, and for a WCA of 180 • the thermal treatment should be between 200 • C and 250 • C. Zhang et al [322], in 2016, produced superhydrophobic films to coat mild steel substrates. The authors obtained films by using a two-step route that included the electrodeposition of silica film followed by modification with a long alkyl-chained organic silane (dodecyltrimethoxysilane).…”

Section: Coatings With Superhydrophobic Functionmentioning

confidence: 99%

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Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Figueira

2020

Polymers

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The corrosion process is a major source of metallic material degradation, particularly in aggressive environments, such as marine ones. Corrosion progression affects the service life of a given metallic structure, which may end in structural failure, leakage, product loss and environmental pollution linked to large financial costs. According to NACE, the annual cost of corrosion worldwide was estimated, in 2016, to be around 3%-4% of the world's gross domestic product. Therefore, the use of methodologies for corrosion mitigation are extremely important. The approaches used can be passive or active. A passive approach is preventive and may be achieved by emplacing a barrier layer, such as a coating that hinders the contact of the metallic substrate with the aggressive environment. An active approach is generally employed when the corrosion is set in. That seeks to reduce the corrosion rate when the protective barrier is already damaged and the aggressive species (i.e., corrosive agents) are in contact with the metallic substrate. In this case, this is more a remediation methodology than a preventive action, such as the use of coatings. The sol-gel synthesis process, over the past few decades, gained remarkable importance in diverse areas of application. Sol-gel allows the combination of inorganic and organic materials in a single-phase and has led to the development of organic-inorganic hybrid (OIH) coatings for several applications, including for corrosion mitigation. This manuscript succinctly reviews the fundamentals of sol-gel concepts and the parameters that influence the processing techniques. The state-of-the-art of the OIH sol-gel coatings reported in the last few years for corrosion protection, are also assessed. Lastly, a brief perspective on the limitations, standing challenges and future perspectives of the field are critically discussed.Polymers 2020, 12, 689 The development of OIH sol-gel coatings, based on siloxanes, for corrosion mitigation, has been widely studied in the last few years [2,31,[36][37][38]. Numerous studies have been conducted since the early 1990s [39,40]. The studies performed showed that siloxanes were effective in mitigating the corrosion processes of different metallic substrates. This development was mainly due to the need for alternative environmentally friend materials and processes to replace the traditional chromium-based pre-treatments. Hexavalent chromium (Cr (VI)) is carcinogenic and shows high environmental toxicity and its use has been forbidden since 2006. However, Cr(VI) based pre-treatments improve the coating adherence to the substrate and are effective corrosion inhibitors [41][42][43] which make its replacement challenging. The use of the sol-gel method to produce OIH coatings for corrosion mitigation suits the main requirements of what should be an environmentally friendly process (i.e., excludes washing stages; it is a waste-free method) and allows one to obtain coatings with high purity and specific pore volumes and surface areas. Since it is a mild synthesis...

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Section: Coatings With Superhydrophobic Functionmentioning

confidence: 99%

Section: Coatings With Superhydrophobic Functionmentioning

confidence: 99%

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Figueira

2020

Polymers

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“…Based on the preparation technologies, various methods were applied to fabricate superhydrophobic steel surfaces, such as electrodeposition, Layer by Layer deposition, electro‐less galvanic deposition, nanocasting technique, sol–gel, and chemical etching . Various materials, which act as an anti‐corrosion layer, were coated or deposited on steel surfaces, such as TiO 2 , SiO 2 , CeO 2 , SiC, graphene oxide, (GO) and silanes . However, developing new methods with highly efficient, low‐cost, large‐scale, and easy‐to‐prepare remain difficult.…”

Section: Introductionmentioning

confidence: 99%

One‐Stage Method for Fabricating Superhydrophobic Stainless Steel Surface and Its Anti‐Corrosion Performance

Gao

Yang

et al. 2016

Adv Eng Mater

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One-stage preparation of superhydrophobic stainless steel surface is achieved by combining chemical etching and assembly. The contact angle of the prepared surface reaches as high as 175 . The correlative mechanism between the contact angle and surface morphology is elucidated from the dynamics perspective by controlling reaction conditions. The optimum reaction conditions are then determined. Experimental results demonstrate that the stainless steel surface achieves optimal water contact angle upon the formation of the "honeycomb" 3D network structure. Electrochemical corrosion test shows that the prepared superhydrophobic stainless steel surface possesses 16 times higher corrosion resistance than common stainless steel surface.

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“…Ceramic materials are resistant against oxidation, corrosion, erosion, and abrasion; therefore, they can protect metals against chemical attacks. In this relation, TiN, TaO 2 , ZrO 2 , SiO 2 , TiO 2 , and Al 2 O 3 coatings have been reported. In addition, synthetic coatings containing two or more ceramic materials were introduced.…”

Section: Introductionmentioning

confidence: 69%

Anticorrosion assessment of Al₂O₃‐TiO₂ composite thin films derived from sol‐gel dipping technique

Oliaee

Naghibi

2017

Int J Applied Ceramic Tech

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Metal surface protection by means of nanostructured ceramic coatings is considered an issue, which is variously scrutinized, and more efforts are made to improve steel performance in accordance with this method. In this respect, this study sought to examine the protective effects of a nanostructured coating containing TiO2 and Al2O3. The optimization approach for obtaining a coating without any cracks with the highest efficiency of corrosion resistance is reported. The variables under assessment were as follows: weight ratio of the oxides, calcination temperature, and preparation parameters. The synthesized samples were analyzed utilizing XRD, FESEM, AFM, Tafel test, EIS, and microhardness measurement. The results revealed that the optimized conditions were as follows: (i) Ti:Al precursor mixture with a weight ratio of 75:25, (ii) heat treatment at 1000°C. This process yielded a uniform composite coating without any cracks with 5.1 nm roughness, containing crystalline rutile phase and amorphous alumina. Not only the intended coating improves the corrosion resistance of steel up to 97%, but it also increases its surface hardness up to 10 units.

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Superhydrophobic surface constructed on electrodeposited silica films by two-step method for corrosion protection of mild steel

Cited by 84 publications

References 47 publications

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

One‐Stage Method for Fabricating Superhydrophobic Stainless Steel Surface and Its Anti‐Corrosion Performance

Anticorrosion assessment of Al₂O₃‐TiO₂ composite thin films derived from sol‐gel dipping technique

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Superhydrophobic surface constructed on electrodeposited silica films by two-step method for corrosion protection of mild steel

Cited by 84 publications

References 47 publications

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

One‐Stage Method for Fabricating Superhydrophobic Stainless Steel Surface and Its Anti‐Corrosion Performance

Anticorrosion assessment of Al2O3‐TiO2 composite thin films derived from sol‐gel dipping technique

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Anticorrosion assessment of Al₂O₃‐TiO₂ composite thin films derived from sol‐gel dipping technique