Studies of electrochemical corrosion of low alloy steel under epoxy coating exposed to natural seawater using the WBE and EIS techniques

Liu, Jie; Zhang, Lunwu; Mu, Xianliang; Zhang, Peiqing

doi:10.1016/j.porgcoat.2017.06.012

Cited by 55 publications

(12 citation statements)

References 39 publications

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“…9,10 Hence, different nanofillers were used to improve the protective properties of epoxy coating. [11][12][13][14][15][16][17][18][19] The factors affecting the chemical and mechanical properties of polymeric composites such as the size of particle, quantity of the particle, and quality of the dispersion of the particle were investigated. [20][21][22][23][24][25][26][27][28] Enhanced corrosion protective properties of epoxy-grafted nanoparticle led to more number of investigations.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Effect of surface modified WO₃ nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

Xavier

2019

J of Applied Polymer Sci

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The effect of introducing WO 3 (tungsten oxide) nanoparticle in the epoxy coating was analyzed by electrochemical impedance spectroscopy and scanning electrochemical microscopy (SECM) methods in 3.5% NaCl. The (3-glycidyloxypropyl)trimethoxysilane was treated with the nanoparticle for the proper dispersion and chemical interaction of nanoparticle with the epoxy resin. The introduction of WO 3 nanoparticle in the epoxy coating enhances the charge transfer resistance (R ct ) as well as the film resistance (R f ). The observation of iron dissolution and oxygen consumption was done by applying the appropriate SECM tip potential in the WO 3 -modified nanocomposite coated steel. The epoxy and epoxy-WO 3 nanocomposite-coated samples were used to study the adhesion and anticorrosion properties. The analysis by SEM/EDX displayed that the enriched W was detected in the nanocomposite coating of steel. The presence of the nano level corrosion product containing W was confirmed by focused ion beam-transmission electron microscope analysis. The high corrosion protection properties of the epoxy-based nanocomposite coating was due to the complex nanoscale layer formed and chemical interactions of epoxy resin with surface-modified nanoparticle in nanocomposites. Preparation of the MaterialsMid steel with composition in mass % is 0.1C, 0.2Si, 0.5Mn, 0.025P, 0.002S, 0.045Al, 0.005N, 0.004O, and rest is Fe. Silicon carbide papers with 800, 1000, and 1200 grit were used for abrading the metal sample. Then, the sample was coated after rinsing with distilled water and acetone. Bisphenol A and the aliphatic amine as hardener were purchased from Sigma-Aldrich. The average particle size of tungsten oxide nanoparticles is 50 nm and was obtained Additional Supporting Information may be found in the online version of this article.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Effect of surface modified WO₃ nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

Xavier

2019

J of Applied Polymer Sci

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“…An oblique line appeared in the low frequency region of coating C after the capacitive loop, representing the Warburg impedance diffusion process. [ 47 ] This stage was mainly controlled by mass transfer process, and corrosion process began to occur and intensify. Corrosive medium completely penetrated through the coating and reached metal interface.…”

Section: Resultsmentioning

confidence: 99%

“…The other three coatings showed semicircular mono reactance arcs, indicating pure capacitance behaviors. [ 47 ] A large impedance arc suggests good corrosion resistance. The equivalent circuit of Model B with a time constant was used for fitting the curve.…”

Section: Resultsmentioning

confidence: 99%

Facile Repair of Anti‐Corrosion Polymeric Composite Coatings Based on Light Triggered Self‐Healing

Yang

Cao

et al. 2021

Macro Materials & Eng

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Photothermally induced self-healing coatings are widely reported, while their application scenarios are rarely taken with concern. In addition, there is a need to achieve the balance between good properties and self-healing behaviors for closing the gap between academic research and engineering applications. Here, self-healing composite coatings are designed based on silane-modified epoxy chains with reversible crosslinking points and multifunctional fillers of cerium oxide nanoparticles grown on graphene nanosheets, and their applications are demonstrated for restricted regions. Diglycidyl ether-terminated poly(dimethylsiloxane) is co-polymerized with diglycidylether of bisphenol A with the weight ratio of 1/99-10/90 to achieve surface-tension driven crack closure, while dangling furan groups contribute to reversible crosslinking points via Diels-Alder reaction. Cerium oxide nanoparticles and graphene nanosheets enhance anti-corrosion properties, and graphene nanosheets also act as photothermal fillers. The results show that pencil hardness, polarized resistance, and coating resistance are highly improved via the introduction of multifunctional fillers at 1 and 2 phr. Good thermally and photothermally induced self-healing is demonstrated. This work provides a new application thought for light triggered self-healing coatings that can be used for restricted regions including inner walls of pipelines and reactors.

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“…Furthermore, molecular oxygen reaches the electrode surface through micropores in the coating, and an electrochemical reaction might occur at the inner surface of the porous layer (polymer/platinum interface). This diffusion behavior is not an ideal Warburg element because the dispersive number is less from 0.5 [30,31]. The non-ideal behavior can be attributed to the nonuniform penetration of molecular oxygen and the electrolyte, consequently an ionic displacement in porous polymer.…”

Section: Impedance Behavior Of the Metallopolymer Sensormentioning

confidence: 98%

A chemiresistor sensor based on a cobalt(salen) metallopolymer for dissolved molecular oxygen

Pereira

Olean‐Oliveira

David-Parra

et al. 2018

Talanta

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A resistance detection device for dissolved molecular oxygen in aqueous solutions is prepared using a chemiresistor material as sensor platform. The chemiresistive circuit element is fashioned from a thin film of a cobalt-salen metallopolymer electrodeposited on a platinum electrode. Electrochemical impedance spectroscopy shows that the resistive and capacitive properties of the sensor platform depend on the presence of dissolved oxygen. The electrical circuit models are R(Q/R)(Q/R) and R(Q/R)(Q/RW) in the absence and presence of oxygen, respectively. The chemiresistor sensor exhibits good sensitivity (0.483 kΩ L mg), excellent reversibility and excellent linearity over a range of dissolved oxygen concentrations typically found under environmental conditions (2.72-40.9 mg L). The sensor fabricated in this work can potentially serve as an alternative sensor for the detection of dissolved oxygen in environmental samples.

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Studies of electrochemical corrosion of low alloy steel under epoxy coating exposed to natural seawater using the WBE and EIS techniques

Cited by 55 publications

References 39 publications

RETRACTED: Effect of surface modified WO₃ nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

RETRACTED: Effect of surface modified WO₃ nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

Facile Repair of Anti‐Corrosion Polymeric Composite Coatings Based on Light Triggered Self‐Healing

A chemiresistor sensor based on a cobalt(salen) metallopolymer for dissolved molecular oxygen

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Studies of electrochemical corrosion of low alloy steel under epoxy coating exposed to natural seawater using the WBE and EIS techniques

Cited by 55 publications

References 39 publications

RETRACTED: Effect of surface modified WO3 nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

RETRACTED: Effect of surface modified WO3 nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

Facile Repair of Anti‐Corrosion Polymeric Composite Coatings Based on Light Triggered Self‐Healing

A chemiresistor sensor based on a cobalt(salen) metallopolymer for dissolved molecular oxygen

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Resources

About

RETRACTED: Effect of surface modified WO₃ nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel

RETRACTED: Effect of surface modified WO₃ nanoparticle on the epoxy coatings for the adhesive and anticorrosion properties of mild steel