Corrosion study of electrophoretically deposited graphene oxide coatings on copper metal

Raza, Mohsin Ali; Rehman, Zaeem Ur; Ghauri, Faizan Ali; Ahmad, Akhlaq; Ahmad, Rafiq; Raffi, Muhammad

doi:10.1016/j.tsf.2016.09.036

Cited by 67 publications

(25 citation statements)

References 41 publications

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“…Schematic illustration of (a) the corrosion protection mechanism through barrier effect and (b) possible reasons for its failure. et al [213] prepared GO films on copper substrates via an EPD method. The results showed control of coating thickness by varying the GO/water suspension concentrations and the voltage in the EPD process.…”

Section: Preparation Methods and Corrosion Resistance Performancementioning

confidence: 99%

A critical review on the production and application of graphene and graphene-based materials in anti-corrosion coatings

Kulyk

Freitas

Santos

et al. 2021

Critical Reviews in Solid State and Materials Sciences

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Among the many potential applications of graphene and graphene-based materials, their use as protective films or as additives in coatings for corrosion protection has seen an increased level of interest in the last decade. Much of this interest is motivated by the need to implement additional functionalities, to enhance anti-corrosion performance and to ultimately extend the service life of metallic structures. Pristine graphene films, with their impermeable nature allied to flexibility and mechanical strength, appear as particularly attractive candidates for barrier films against corrosive agents, while graphene-based materials such as graphene oxide and reduced graphene oxide offer a wide range of opportunities for their dispersion in polymeric matrices for composite anti-corrosive coatings. Simultaneously, considerable progress in the development of scalable graphene and graphene-based materials production techniques has been made during the last several years. Currently, a broad range of graphene materials with different morphologies and properties is available, making the need for an adequate fit between the production method and the desired application even more evident. This review article aims to give the reader a general overview of the recent trends in both the production of graphene and graphene-based materials, and their implementation in different anti-corrosion solutions. Moreover, the present work provides a critical look on this subject, highlighting the areas in need of further exploration.

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Section: Preparation Methods and Corrosion Resistance Performancementioning

confidence: 99%

A critical review on the production and application of graphene and graphene-based materials in anti-corrosion coatings

Kulyk

Freitas

Santos

et al. 2021

Critical Reviews in Solid State and Materials Sciences

View full text Add to dashboard Cite

show abstract

“…Ho et al [24] show that steel with electrophoretically deposited GO coatings has better corrosion resistance than steel with graphene coatings in the acidic marine medium due to the formation of hydroxyl functional groups in GO coatings. Raza et al [25] have optimized the electrophoretic deposition of graphene oxide on copper. The GO-Cu samples coated at 5 V and 10 s show ~ 6 times lower corrosion rate as compared to the bare copper in the marine environment.…”

Section: Introductionmentioning

confidence: 99%

Corrosion performance of graphene oxide coated 304 SS in PEMFC environment

et al. 2021

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In this work, an electrophoretic deposition technique was used to deposit graphene oxide (GO) on 304 stainless steel. Its corrosion performance was evaluated in a simulated polymer electrolyte membrane fuel cell environment. The corrosion current density (icorr) and interfacial contact resistance (ICR) were measured at 8.9 µA/cm2 and 19.3 mΩ cm2, respectively. The icorr of GO coated 304SS is several orders lower than bare SS 304. Similarly, the ICR of GO coated 304SS is nearly half of bare 304SS at a compaction pressure of 150 N/cm2. The potentiodynamic polarization plot indicates the prevalence of multiple corrosion mechanisms. A prolonged corrosion study for 30 days immersed in the simulated PEM cell environment shows the formation of rounded pits that corroborate the activity of pitting corrosion.

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“…One can visualize such coatings as the one composed of three domains: pure graphene (current-conducting), oxidized graphene (hydrophilic, but still impermeable to oxygen or water), and defects or holes that do not protect the metal surface. Once graphene oxide is employed as the EPD precursor, we end up with coatings that do not meet the criteria of good protective properties [ 10 , 11 , 12 ]. There are at least two techniques for solving this problem.…”

Section: Introductionmentioning

confidence: 99%

Effect of Functionalization of Reduced Graphene Oxide Coatings with Nitrogen and Sulfur Groups on Their Anti-Corrosion Properties

2021

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Electrophoretic production of anticorrosion carbonaceous coatings on copper could be successfully performed by anodic oxidation of negatively charged graphene platelets suspended in an aqueous solution. The various platelets were synthesized by Hummer’s method followed by a hydrothermal reduction in the presence of NH4SCN which was expected to substitute some parts of graphene structure with nitrogen and sulfur groups. X-ray photoelectron spectroscopy analysis confirmed that the graphene precursors, as well as the coatings, contained typical nitrogen groups, such as pyridinic and pyrrolic, and sulfur groups, such as thiol, thiophene, or C-SO2. However, due to oxidation during deposition, the qualitative and quantitative composition of the graphene coatings changed relative to the composition of the precursors. In particular, the concentration of nitrogen and sulfur dropped and some thiophene groups were oxidized to C-SO2. Studies showed the functionalized coatings had a uniform, defect-free, hydrophobic, more adhesive surface than nonmodified films. The corrosion measurements demonstrated that these coatings had better protective properties than the ones without these heteroatoms. This behavior can be assigned to the catalytic activity of nitrogen towards oxidation of C-SO2 groups to C-SO3H with oxygen.

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Corrosion study of electrophoretically deposited graphene oxide coatings on copper metal

Cited by 67 publications

References 41 publications

A critical review on the production and application of graphene and graphene-based materials in anti-corrosion coatings

A critical review on the production and application of graphene and graphene-based materials in anti-corrosion coatings

Corrosion performance of graphene oxide coated 304 SS in PEMFC environment

Effect of Functionalization of Reduced Graphene Oxide Coatings with Nitrogen and Sulfur Groups on Their Anti-Corrosion Properties

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