Wear performance of hierarchically structured alumina reinforced by hybrid graphene encapsulated alumina nanofibers

Hussainova, Irina; Baronins, Janis; Drozdova, Maria; Antonov, Maksim

doi:10.1016/j.wear.2016.09.028

Cited by 25 publications

(9 citation statements)

References 34 publications

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“…To solve this severe issue, adding lubricating additive into ceramics has become a major route to reduce the friction coefficient, such as metals (19), oxides (20)(21)(22), carbon nanotubes (CNTs) (23)(24)(25)(26)(27)(28), or graphene (26,(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39). These lubricating additives could form lubricating film on the surface of the ceramic and alleviate the microstress in friction, so the cracks and microfracture could be inhibited.…”

Section: Ultralow Friction Coefficient Of the 2d Graphene Array/ceram...mentioning

confidence: 99%

Embedding two-dimensional graphene array in ceramic matrix

et al. 2020

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Dispersing two-dimensional (2D) graphene sheets in 3D material matrix becomes a promising route to access the exceptional mechanical and electrical properties of individual graphene sheets in bulk quantities for macroscopic applications. However, this is highly restricted by the uncontrolled distribution and orientation of the graphene sheets in 3D structures as well as the weak graphene-matrix bonding and poor load transfer. Here, we propose a previously unreported avenue to embed ordered 2D graphene array into ceramics matrix, where the catastrophic fracture failure mode of brittle ceramics was transformed into stable crack propagation behavior with 250 to 500% improvement in the mechanical toughness. An unprecedentedly low dry sliding friction coefficient of 0.06 in bulk ceramics was obtained mainly due to the inhibition of the microcrack propagation by the ordered 2D graphene array. These unique and low-cost 2D graphene array/ceramic composites may find applications in severe environments with superior structural and functional properties.

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Section: Ultralow Friction Coefficient Of the 2d Graphene Array/ceram...mentioning

confidence: 99%

Embedding two-dimensional graphene array in ceramic matrix

et al. 2020

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“…Several aluminium (Al) alloys and their composites have widely been used in versatile applications such as automobiles, aircraft, aerospace and so many other fields. 1–4 The reinforcements in the metal matrix composites (MMCs) are generally employed in order to tune the properties, such as strength, stiffness, conductivity and so on, of the matrix metal. The reinforcements are selected in such a way that they should be stable at given working conditions, including temperature, chemical or corrosive environment.…”

Section: Introductionmentioning

confidence: 99%

“…1,4 Several reinforcements, recently carbon nanotutbes, graphene or graphene oxide, are being tried by many researchers to Al matrix for improving their wear properties. 2,3,10,11 Nickel-coated multilayered graphene nanoplatelets alumina matrix composites have shown good tribological properties. 10 The most widely used method of Al MMCs preparation is stir casting.…”

Section: Introductionmentioning

confidence: 99%

Effect of reinforcements on graphite/titania/aluminium nanohybrid composites

Yendapalli

Shaik

Narahari

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Aluminium alloys and their composites are often used in aerospace, automobile and biomedical applications. However, mechanical and surface properties of those alloys have not reached up to the expectation. This investigation focused to improve the wear resistance properties along with mechanical and surface properties of aluminium matrix composites. Here, novel aluminium matrix nanohybrid composites were developed using titanium oxide and graphite as reinforced via powder metallurgical route. The sintered samples were analysed by different tests such as, hardness, surface roughness, wear tests and other structural analyses. The obtained results showed that some new compounds formed during sintering were responsible for improved mechanical and surface properties for different applications. The wear test showed that there was rapid worn out of graphite from the composites having aluminium content more than 50 wt% due to the higher content of graphite (10 and 20 wt%, respectively). In addition, due to the increase of porosity in the different hybrid composites, there was an increase in coefficient of friction observed in some materials. The aluminium nanohybrid composite having 40 wt% titania and 10 wt% graphite showed best results compared with others. Therefore, the optimized hybrid composites with proper sintering condition would significantly help to get suitable structural, mechanical as well as tribological properties for many advanced applications.

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“…In addition, due to the weak van der Waals bonds, layered structure of graphene nanoplatelets (GNPs) which consist of several layers of graphene could be sheared easily, and hence it can be expected that the incorporation of GNPs into metals exhibits a solid lubrication effect on contact surfaces to reduce friction and consequently wear 18. Moreover, graphene layers could reduce volume loss and prevent the cracks which may take place during sliding by acting as barriers to crack propagation 19–21…”

Section: Introductionmentioning

confidence: 99%

“…18 Moreover, graphene layers could reduce volume loss and prevent the cracks which may take place during sliding by acting as barriers to crack propagation. [19][20][21] There are several investigations reported in the literature regarding the introduction of GNPs into metals in order to improve their mechanical and/or tribological performance. [22][23][24] GNPs were commonly incorporated into such matrices by means of powder metallurgy which is thought to be an effective technique in terms of obtaining a uniform dispersion of finer reinforcements through matrix.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the high temperature dry sliding wear behavior of graphene nanoplatelets reinforced aluminum matrix composites

Martin

Kandemir

Antonov

2020

Journal of Composite Materials

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In this study, graphene nanoplatelets (GNPs) with a thickness of 50-100 nm have been utilized to improve the mechanical and tribological properties of A360 alloy due to their extraordinary mechanical properties and solid lubricant nature. For the investigation of tribological properties, ball-on disc tests were carried out at various temperatures including room temperature (RT), 150 °C, and 300 °C. According to the hardness and ball-on-disc test results, the nanocomposite samples reinforced with GNPs exhibited improved hardness and wear resistance. The improvement in the wear behavior of nanocomposites was referred to the temporarily formed solid lubricant film of harder GNPs during the wear, and hence coefficient of friction (COF) and volume loss were considerably reduced. Abrasive-adhesive, oxidative, and mild-to-severe were found to be main wear mechanisms at RT, 150 °C, and 300 °C, respectively. Overall, the results show that the nanocomposites fabricated by casting method combined with mechanical stirring and ultrasonication have promising wear performance, especially at elevated temperatures. This may suggest that these developed materials could be potential candidates to be used in the engineering applications requiring high temperature wear performance.

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Wear performance of hierarchically structured alumina reinforced by hybrid graphene encapsulated alumina nanofibers

Cited by 25 publications

References 34 publications

Embedding two-dimensional graphene array in ceramic matrix

Embedding two-dimensional graphene array in ceramic matrix

Effect of reinforcements on graphite/titania/aluminium nanohybrid composites

Investigation of the high temperature dry sliding wear behavior of graphene nanoplatelets reinforced aluminum matrix composites

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