Graphene and Its Industrial Applications �C A Review

Nassef, Belal G.; Nassef, Galal A.; Daha, Mohamed A.

doi:10.5923/j.ijme.20201001.01

Cited by 19 publications

(14 citation statements)

References 70 publications

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“…Graphene has a two-dimensional structure and small particle size, providing a large contact area sufficient to resist oxidation [27,28]. Its unique nano-scaled structure introduced high thermal and electrical conductivities, promoting it to be one of the best choices in supercapacitors and energy harvesting [29]. Due to its outstanding physical properties and self-lubricity characteristic, researchers reported that graphene enhanced the lubricity of grease and thermal conductivity as well [30,31].…”

Section: Introductionmentioning

confidence: 99%

Impact of Graphene Nano-Additives to Lithium Grease on the Dynamic and Tribological Behavior of Rolling Bearings

Nassef

Soliman²,

Nassef

et al. 2022

Lubricants

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In recent years, reduced graphene oxide (rGO) received considerable interest as a lubricant nano-additive for enhancing sliding and rolling contacts. This paper investigates the tribological and dynamic behavior of ball bearings lubricated by lithium grease at different weight percentages of rGO. Full bearing tests were conducted for experimental modal analysis, vibration analysis, ultrasonic analysis, and infrared thermography. Modal analysis indicated considerable improvements of the damping ratio values up to 50% for the bearings with rGO nano-additives. These findings were confirmed by the corresponding reductions in vibrations and ultrasound levels. The steady-state temperatures of bearings running with lithium grease reached 64 °C, whereas the temperature of bearings lubricated by grease with 2 wt.% rGO measured only 27 °C. A Timken Load test was conducted on grease samples with and without rGO additives. Grease samples having 2, 3.5, and 5 wt.% rGO showed the highest OK load with an increase of 25%, 50%, and 100% as compared to values of lithium grease. For comparison, all tests were conducted on samples of the same grease blended with graphite and MWCNTs’ nano-additives. The results proved the superiority of graphene in enhancing the load-carrying capacity and damping of grease in rolling bearings.

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Section: Introductionmentioning

confidence: 99%

Impact of Graphene Nano-Additives to Lithium Grease on the Dynamic and Tribological Behavior of Rolling Bearings

Nassef

Soliman²,

Nassef

et al. 2022

Lubricants

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“…Graphene is composed of a bidimensional lattice of carbon atoms displayed in a honeycomb structure. Its isolation and characterization in 2004 [35], together with its demonstrated technological potential [36], has motivated the design and production of artificial graphene (AG) [37], that is, more general two-dimensional fermionic platforms that maintain the hexagonal structure. AG systems preserve the main electronic properties of graphene, owing to the preserved hexagonal symmetry of the lattice, while representing much more tunable platforms that permit to model imaginative electronic interactions or explore new phases of matter.…”

Section: Introductionmentioning

confidence: 99%

Adiabatic quantum algorithm for artificial graphene

Pérez-Obiol¹,

Pérez-Salinas²,

Sánchez-Ramírez³

et al. 2022

Preprint

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“…Single-walled or multi-walled carbon nanotube (SWCNT or MWCNT) filled polymer composites can be created using in-situ polymerization, solution mixture, or meltmixing (extrusion and injection) techniques [9]. Graphene (Gr) is a two-dimensional honeycomb lattice made up of a single atomic layer of sp2-bonded carbon atoms that has garnered attention due to its odd physical properties [10]. Because of their remarkable physical properties, such as extreme electrical conductivity, equal thermal stability, and excellent mechanical efficiency, graphene and carbon nanotubes (CNTs) have prompted tremendous interest and involvement in science [11,12].…”

Section: Introductionmentioning

confidence: 99%

Morphological and Electrical properties of Polyvinylpyrrolidone/Multi-walled Carbon Nanotubes Nanocomposite with Graphene

Sahan

2022

basjs

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The solution casting method was used to prepare a polyvinylpyrrolidone (PVP)/Multi-walled carbon nanotubes (MWCNTs) nanocomposite with Graphene (Gr). Field Effect Scanning Electron Microscope (FESEM) and Fourier Transformer Infrared (FTIR) were used to characterize the surface morphology and optical properties of samples. FESEM images revealed a uniform distribution of graphene within the PVP-MWCNT nanocomposite. The FTIR spectra confirmed the nanocomposite information is successful with apperaring the presence of primary distinct peaks belonging to vibration groups that describe the prepared samples.. Furthermore, found that the DC electrical conductivity of the prepared nanocomposites increases with increasing MWCNT concentration which is due to hopping conduction

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Graphene and Its Industrial Applications �C A Review

Cited by 19 publications

References 70 publications

Impact of Graphene Nano-Additives to Lithium Grease on the Dynamic and Tribological Behavior of Rolling Bearings

Impact of Graphene Nano-Additives to Lithium Grease on the Dynamic and Tribological Behavior of Rolling Bearings

Adiabatic quantum algorithm for artificial graphene

Morphological and Electrical properties of Polyvinylpyrrolidone/Multi-walled Carbon Nanotubes Nanocomposite with Graphene

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