Effects of graphene oxide-filled sol-gel sealing on the corrosion resistance and paint adhesion of anodized aluminum

Yu, Mei; Dong, Huan; Shi, Haobo; Xiong, Liangliang; He, Chao; Liu, Jianhua; Li, Songmei

doi:10.1016/j.apsusc.2019.02.005

Cited by 39 publications

(9 citation statements)

References 47 publications

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“…Their impedance is related to the frequency as follows where T is the CPE constant, ω is the angular frequency, and n is the dispersion coefficient of the CPE. The dispersion coefficient n ranges from −1 (pure inductor) to 1 (pure capacitor) . The extracted results are listed in Table .…”

Section: Resultsmentioning

confidence: 99%

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Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

Xie

Meng

Mao

et al. 2021

ACS Appl. Mater. Interfaces

109

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Deformation-driven metallurgy was implemented to prepare graphene nanoplatelet (GNP)-reinforced aluminum matrix composites with a time-dependent self-enhancement in corrosion resistance. Severe plastic deformation contributed to the sufficient brokenness, thinning, enfolding, and redispersion of GNPs, as well as grain refinement. The homogeneously dispersed GNPs showed a great corrosion inhibition mechanism in a chloride-containing environment, ascribed to the formation of a carbon-doped protective film via diffusion and chemical bonding between GNPs and the surface oxide film. Electrochemical and intergranular corrosion tests were conducted to show the enhancement of long-term corrosion resistance. First-principles calculations were performed to explore the high corrosion resistance of the carbon-doped protective film. The energy barriers of vacancy formation, Cl ingress, and charge transfer were synchronously enhanced with the addition of GNPs into aluminum matrix composites as long-term corrosion inhibitors.

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Section: Resultsmentioning

confidence: 99%

“…The dispersion coefficient n ranges from −1 (pure inductor) to 1 (pure capacitor). 42 The extracted results are listed in Table 2. Figure 10 shows the equivalent polarization resistance of all the results.…”

Section: Eis Resultsmentioning

confidence: 99%

Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

Xie

Meng

Mao

et al. 2021

ACS Appl. Mater. Interfaces

109

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“…The unmodified enzyme‐loaded coating began to be destroyed at 5.45 N. It concluded that the adhesion of the coating on the wire mesh is 43.392 MPa from Equation , compared with 25%UPS is 46.576 MPa, 50%UPS is 51.751 MPa, by 7% and 19%, respectively. The adhesion values obtained in the present study was also significantly higher than anodic aluminum oxide film was sealed by graphene oxide‐filled sol–gel prepared by Yu et al, which possessed paint adhesion strength values were 18.4 MPa . The adhesion of the enzyme‐loaded coating in this study proves that enzyme‐loaded coating is stronger and not easy to wash away by esterification reaction components.…”

Section: Resultsmentioning

confidence: 99%

Improvement of adhesion properties of enzyme‐loaded coating on random packing in transesterification

Wang

Liang

et al. 2020

Asia-Pacific J Chem Eng

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The stability of immobilized enzyme on packing is an important factor to limit the development of enzyme-catalyzed reaction distillation. The modified sol loaded with Candida antarctica lipase B (CALB) was fixed on random packing (316 L stainless steel wire mesh) by spraying method to form an enzymeloaded coating, which was applied to catalyze the esterification of ethyl acetate and n-butanol. The addition of 1-[3-(trimethoxysilyl)propyl]ureido (UPS) enhanced the stability of the CALB, and the mechanism of its combination was explored from a microscopic perspective. And then, it was confirmed by scratch resistance test that adhesion of enzyme-loaded coating in packing was improved 19%. The esterification reaction showed that the addition of UPS had little effect on the conversion rate while improving the stability of the coating.These results suggest that the effect of UPS treatment on the enzyme-loaded coating performance significantly enhanced the long-term effect of enzymeloaded packing.

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“…More recently, GO has been incorporated into this sol-gel network to give further improvement in the corrosion protection of the coatings [197]. Sol-gels modified with GO [198][199][200][201], functionalised GO [202][203][204] and GO loaded corrosion inhibitors [205,206] have all been employed to enhance the protective properties of the coatings. For example, Parkhizer et al [202] incorporated silane functionalised GO nanosheets into a silane coating and compared this coating with the non-functionalised GO-based silane coating.…”

Section: Graphene Combined With Sol-gels As Protective Coatingsmentioning

confidence: 99%

Review of Recent Developments in the Formulation of Graphene-Based Coatings for the Corrosion Protection of Metals and Alloys

Healy

Tian

Alves

et al. 2020

CMD

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Corrosion is a naturally occurring phenomenon and there is continuous interest in the development of new and more protective coatings or films that can be employed to prevent or minimise corrosion. In this review the corrosion protection afforded by two-dimensional graphene is described and discussed. Following a short introduction to corrosion, the application of graphene in the formulation of coatings and films is introduced. Initially, reduced graphene oxide (rGO) and metallic like graphene layers are reviewed, highlighting the issues with galvanic corrosion. Then the more successful graphene oxide (GO), functionalised GO and polymer grafted GO-modified coatings are introduced, where the functionalisation and grafting are tailored to optimise dispersion of graphene fillers. This is followed by rGO coupled with zinc rich coatings or conducting polymers, GO combined with sol-gels, layered double hydroxides or metal organic frameworks as protective coatings, where again the dispersion of the graphene sheets becomes important in the design of protective coatings. The role of graphene in the photocathodic protection of metals and alloys is briefly introduced, while graphene-like emerging materials, such as hexagonal boron nitride, h-BN, and graphitic carbon nitride, g-C3N4, are then highlighted.

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Effects of graphene oxide-filled sol-gel sealing on the corrosion resistance and paint adhesion of anodized aluminum

Cited by 39 publications

References 47 publications

Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

Improvement of adhesion properties of enzyme‐loaded coating on random packing in transesterification

Review of Recent Developments in the Formulation of Graphene-Based Coatings for the Corrosion Protection of Metals and Alloys

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