The effect of zinc cation on the anticorrosion behavior of an eco-friendly silane sol–gel coating applied on mild steel

Alinejad, Shima; Naderi, Reza; Mahdavian, M.

doi:10.1016/j.porgcoat.2016.08.005

Cited by 44 publications

(10 citation statements)

References 32 publications

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“…The results indicate that potassium permanganate would be a promising inhibitor for the silane film system and could have wide applications with its low price and high efficiency. The results of many works confirmed that the addition of corrosion inhibitors to modify silane coatings is beneficial up to a certain amount [45,49,50,52]. It was verified that a higher than optimal corrosion inhibitor concentration in silane film caused a significant decrease in corrosion protection due to destabilization of the siloxane network.…”

Section: Modification Of Silane Films With Corrosion Inhibitorsmentioning

confidence: 86%

“…Silane coatings were also modified with such inorganic corrosion inhibitors as zinc salts or potassium permanganate. L.-K. Wu et al [49] and Alinejad et al [50] investigated the corrosion protection of mild steels by zinc-doped silane films. As evidenced by the obtained data, the addition of the inhibitor had no effect on the film thickness or condensation reactions.…”

Section: Modification Of Silane Films With Corrosion Inhibitorsmentioning

confidence: 99%

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Methods of Modifying Anticorrosive Protective Properties of Silane Films

Owczarek

2019

Acta Phys. Pol. A

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Due to the fact that it is highly toxic and carcinogenic, chromate-based surface treatment is restricted or gradually reduced in many countries. Among the alternatives to replace conventional chromate coatings, organosilanes show some important advantages such as competitive price and environmental compatibility. These substances inhibit the corrosion processes of metal surfaces but cannot offer long term-protection. For this reason, silane films have been modified by different procedures. In this paper, methods of improving the anticorrosive protective performance of silane films have been presented.

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Section: Modification Of Silane Films With Corrosion Inhibitorsmentioning

confidence: 86%

Section: Modification Of Silane Films With Corrosion Inhibitorsmentioning

confidence: 99%

Methods of Modifying Anticorrosive Protective Properties of Silane Films

Owczarek

2019

Acta Phys. Pol. A

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“…In a study by Atik et al [2], they have developed a hybrid coating of poly methyl methacrylate and ZrO 2 and investigated its anti-corrosion behaviour in 316L stainless steel. Similarly, various forms of chemical hydrogel coatings-incorporated inhibitor formulations have also been reported to enhance the corrosion resistance [3]. However, the water-based sol-gel coatings are more cost-effective than the materials used in alcohol-based coating system [8].…”

Section: Biocorrosion Studiesmentioning

confidence: 99%

Effect of nano-zerovalent iron incorporated polyvinyl-alginate hybrid hydrogel matrix on inhibition of corrosive bacteria in a cooling tower water environment

et al. 2019

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Microbial-induced corrosion (MIC) is an insidious process caused by microbial growth on metals. Among many metals, aluminium, brass, mild steel, stainless steel and carbon steels are more vulnerable to MIC. The present study investigates one of the effective corrosion protection strategies using hybrid hydrogel coating. In this regard, the anti-corrosive activity of n-zerovalent iron (nano-ZVI) incorporated polyvinyl-alginate (PVA) hybrid hydrogel-coated matrix against MIC on aluminium, Al 1100 metal, was tested. The study was conducted against corrosion-inducing bacteria, Terribacillus aidingensis EN3 (Accession number: KR183874), isolated from cooling tower water system. The antibacterial results of nano-ZVI showed a diameter of zone of inhibition at 10 mg/mL. Hybrid hydrogel matrix was employed against the MIC in cooling tower water-containing systems, I, II and III, IV along with a control. The results of the study were supported with weight loss (WL) analysis and electrochemical impedance spectroscopy (EIS) studies. WL results showed a reduced rate of 0.08 mm/y corrosion in hybrid hydrogel system than the other systems. The EIS studies showed higher charge transfer resistance (R ct ) of 14.53 Ω and solution resistance of 3.8 Ω. These results confirmed the presence of nano-ZVI in hybrid hydrogel acted as an antibacterial agent in the PVA-alginate protective film against corrosion in Al 1100. Thus, the obtained results evidenced the novel idea of hydrogel matrix to act as an anti-corrosive film in the cooling tower system.

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“…One of the promising strategies proposed in the last decade is the hybrid sol-gel technology [2][3][4]. The interest in these materials resides in the wide range of combinations possible between the chemistries and chemical processes to achieve innovative materials with controllable morphologies and surface properties.…”

Section: Introductionmentioning

confidence: 99%

Correlation between the structure and the anticorrosion barrier properties of hybrid sol–gel coatings: application to the protection of AA2024-T3 alloys

Cullen

Morshed

O’Sullivan

et al. 2017

J Sol-Gel Sci Technol

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Hybrid sol-gel materials have been extensively studied as viable alternatives to toxic chromate (VI)-based coatings for the corrosion protection of AA2024-T3 in the aerospace industry, due to the wide range of available chemistries they offer and the tremendous development potential of innovative functional coatings. However, so far, little work has been performed in identifying the effect of the employed chemistries on the structure and anticorrosion properties of the coatings. This work proposes to contribute to a better understanding of the relationship existing between the structure, morphology and anticorrosion properties of hybrid sol-gel coatings deposited on AA2024-T3 aluminium surfaces, the most widely used alloy in the aerospace industry. The sol-gels are prepared employing two hybrid precursors; an organosilane, 3-trimethoxysilylpropylmethacrylate, and a zirconium complex prepared from the chelation of zirconium n-propoxide, and methacrylic acid. The structure of the hybrid sol-gel formulation is modified by altering the concentration of the transition metal complex. The structure and morphology of the coatings are characterised by dynamic light scattering, fourier transform infrared spectroscopy, silicon nuclear magnetic resonance spectroscopy, differential scanning calorimetry, scanning electron microscopy, atomic-force microscopy and the anticorrosion barrier properties characterised by electrochemical impedance spectroscopy and neutral salt-spray. It is found that the transition metal concentration affected the morphology and structure, as well as the anticorrosion performances of the hybrid sol-gel coatings. A direct correlation between the morphology of the coatings and their final anticorrosion barrier properties is demonstrated, and the optimum material amongst this series is determined to be comprised of a concentration of between 20 and 30% of transition metal.

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The effect of zinc cation on the anticorrosion behavior of an eco-friendly silane sol–gel coating applied on mild steel

Cited by 44 publications

References 32 publications

Methods of Modifying Anticorrosive Protective Properties of Silane Films

Methods of Modifying Anticorrosive Protective Properties of Silane Films

Effect of nano-zerovalent iron incorporated polyvinyl-alginate hybrid hydrogel matrix on inhibition of corrosive bacteria in a cooling tower water environment

Correlation between the structure and the anticorrosion barrier properties of hybrid sol–gel coatings: application to the protection of AA2024-T3 alloys

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