Electrochemical behaviour of SnZn-graphene oxide composite coatings

Rekha, M.Y.; Kamboj, Anshul; Srivastava, Chandan

doi:10.1016/j.tsf.2017.07.004

Cited by 29 publications

(3 citation statements)

References 37 publications

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“…Such information is essential for establishing the role of the additives on local microstructural evolution for corrosion protection. Our investigations have indeed revealed that the incorporation of carbonaceous material has a significant effect on the microstructure of the coating [15][16][17][18][19][20][21][22][23][24][25] with respect to attributes such as grain size, coating growth direction, elemental segregation [22], constitution and relative abundance of high and low angle grain boundaries, ECS Transactions, 97 (7) 473-478 (2020) evolution of special boundaries and strain in the coatings [9,13,14,15]. For example, it is invariably observed that the optimum addition of the carbonaceous additive which leads to the maximum corrosion resistance performance results in the presence of highest fraction of low energy low angle grain boundaries and low energy special boundaries (Σ3 coherent twins) [16].…”

Section: Coating System Percentage Change In the Corrosion Current De...mentioning

confidence: 55%

The Interesting Complicacy of the New Age Metallic Coatings with Carbonaceous Additives

Arora¹,

Srivastava²

2020

ECS Trans.

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It has been well documented that the inertness and impermeability of graphene/graphene oxide and hydrophobicity of carbon nanotubes (CNTs) can be used to protect surfaces from degradation due to corrosion. Direct deposition of these carbonaceous materials to protect large scale structures is however impractical due to obvious high cost and instrumentation related difficulties. One other way to use such carbonaceous additives is to incorporate them in minor quantitates into conventional metallic coatings. The sensitivity of the corrosion response of the composite coatings with minor additions of the carbonaceous materials is well established but there exists a debate about the beneficial or detrimental effect of such addition. In this report, we discuss some of the interesting observations made in our work on metal-graphene/graphene oxide/CNT composite coatings and illustrate that there exists a strong correlation between the additive volume fraction and the coating microstructure which essentially governs the corrosion response.

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Section: Coating System Percentage Change In the Corrosion Current De...mentioning

confidence: 55%

The Interesting Complicacy of the New Age Metallic Coatings with Carbonaceous Additives

Arora¹,

Srivastava²

2020

ECS Trans.

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“…The added GO was shown to induce a reduction in the size of the Zn grains and decrease the corrosion rate, while cross-sections of the Zn/GO/Zn multilayer coatings showed that the GO reduced the dissolution of the underlying Zn layer by inhibiting the permeation of OH − and Cl − ions. Tin and nickel have also been combined with zinc to give SnZn/GO composites [192] and NiZn/GO [193] with very good corrosion protection properties.…”

Section: Graphene Modified Zinc Rich 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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“…Recently, graphene oxide has received much attention among the nanoreinforcements due to its unique structure and outstanding mechanical properties and the presence of oxygen in graphene oxide to enhance the interfacial bond between the matrix and the reinforcement [17]. Furthermore, graphene oxide is mostly used as a coating material because of its chemical inertness and impermeability characteristics [18]. So far, investigators have mostly studied and evaluated only the mechanical behaviour of graphene oxide-based composite materials, and only a few authors concentrated on the corrosion behaviour of graphene oxide reinforced composite materials [19].…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Hardness Behaviour of Al/GO Nanocomposites Processed by the Ultrasonic Gravitational Stir Casting Method

Narayanan

Sozhamannan

Hemalatha

et al. 2021

International Journal of Corrosion

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The objective of this work is to evaluate the corrosion behaviour of nanographene oxide reinforced aluminium (Al/GO) metal matrix composites with different immersion time periods using the immersion corrosion technique. The Al/GO composites were fabricated by the ultrasonic gravitational stir casting process. The corrosions of Al/GO were evaluated using a scanning electron microscope. The experimental results revealed that the corrosion rate decreased and weight losses increased with increasing immersion time periods. The nonimmersed Al/GO composites exhibited higher microhardness values compared to the immersed Al/GO composites.

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Electrochemical behaviour of SnZn-graphene oxide composite coatings

Cited by 29 publications

References 37 publications

The Interesting Complicacy of the New Age Metallic Coatings with Carbonaceous Additives

The Interesting Complicacy of the New Age Metallic Coatings with Carbonaceous Additives

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

Corrosion and Hardness Behaviour of Al/GO Nanocomposites Processed by the Ultrasonic Gravitational Stir Casting Method

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