Development and characterization of multiwalled carbon nanotube-reinforced microwave sintered hybrid aluminum metal matrix composites: An experimental investigation on mechanical and tribological performances

Kumar, Ravi; Bhowmick, Hiralal; Gupta, Dheeraj; Bansal, Sandeep

doi:10.1177/14644207211028969

Cited by 10 publications

(8 citation statements)

References 30 publications

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“…Since a transfer film has not yet formed between the HGrF/Nrs and the steel ring initially, the high deformation occurring in the elastomer material can be explained by the size of the contact surfaces. 35,36 The maximum F f , friction coefficient, and wear rate values from the dry friction tests performed at constant normal load and rotational speed in the tests performed on HGrF/Nr nanocomposites are given in Figure 9. The COF and F f values given in the graphs are the maximum values obtained during the test period.…”

Section: Resultsmentioning

confidence: 99%

“…The GrF-OH filled nanocomposite samples showed a high COF value at the beginning of the test and then decreased over time. Since a transfer film has not yet formed between the HGrF/Nrs and the steel ring initially, the high deformation occurring in the elastomer material can be explained by the size of the contact surfaces 35,36. The maximum F f , friction coefficient, and wear rate…”

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confidence: 99%

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Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Kasım¹,

Onat

Engin³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The use of unfilled pure elastomer parts is limited in friction wheels, roller tires, sealing elements, and dynamic friction air suspension applications requiring high wear resistance. This study investigates the mechanical and tribological properties of new nanocomposites obtained by adding hydroxyl-functionalized graphene nanoplatelets at 1, 4, and 8 phr (parts per hundred rubber) ratios to the carbon black filled main rubber compound of sealing elements designed for axle hubs. The synergistic effect of nanofiller materials on the wear behavior of nanocomposites was tested with a block-on-ring wear tester under dry sliding conditions at 1000 rpm and 15 N normal load conditions. The worn surfaces were examined with scanning electron microscopy and circularly polarized light–differential interference contrast topology microscopy to reveal the wear mechanism. The addition of functionalized graphene nanoplatelets to the nanocomposite compound caused significant changes in tensile strength and elongation values by changing the cross-link density. The wear rate of nanocomposites prepared with graphene nanoplatelets at 1, 4, and 8 phr ratios was 11.15%, 25.24%, and 36.54% lower than the main rubber mixture used, respectively. While the hysteresis loss decreased by 14.83% at 1 phr, this value increased in other filler ratios. Significant differences in temperature change occurred as the amount of filler increased. After the test, the temperature values of nanocomposites with 1 and 4 phr filler ratios were between about 85–89°C, while it was measured as 99°C in nanocomposites with 8 phr filler ratios. It has been observed that the homogeneous distribution of two-dimensional carbon allotropes such as graphene nanoplatelet added to the rubber matrix at the optimum rate will improve tribological properties such as better surface lubrication, low wear rate, and low friction coefficient.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Kasım¹,

Onat

Engin³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Carbon-based materials have attracted tribologists due to their exceptional friction and wear characteristics. [14][15][16][17] Graphene, a 2D nanomaterial, is a versatile material that can be used as nanofillers [18][19][20][21][22][23] in composites to increase strength and as nanoadditives 24 in synthetic oils and water-based lubricants to increase wear resistance. Synthesized rGO as highly exfoliated, 25 super high exfoliated, 26 used as nanocomposites, 27 hybrid nanomaterials, 28 prove to be an effective friction modifier.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of chemically exfoliated reduced graphene oxide from as-grated graphite rods recovered from used household batteries for utilization in tribological applications

Manokaran

Manikkavasagan

Nesappan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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The research objective of this work is to reuse graphite rods recovered from used batteries and utilize them as an additive in SAE20W40 oil to improve the engine parts’ lubrication ability and wear resistance. The graphite rods are grated to obtain ultra-fine particles and then chemically exfoliated using an Improved Hummer's process that results in graphene oxide. Then, it is thermally reduced at 350 °C to yield reduced graphene oxide. Different ratios (0.25, 0.50, 0.75, and 1.00 wt.%) of as-grated graphite particles and reduced graphene oxide were dispersed in the above oil to form a colloidal solution and then used for tribological studies. The graphite particles and synthesized reduced graphene oxide were characterized using X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy. X-ray diffraction data confirms the presence of graphite, graphene oxide, and reduced graphene oxide in the prepared powders and matches with the standard files. High-resolution transmission electron microscopy images reveal the presence of multilayer sheets with an interplanar distance of 0.34 nm having wrinkles, folds, and gas holes. The G and D band positions of Raman spectra prove the formation of oxygenated functional groups, and the ID/ IG ratio confirms the defects in graphene oxide and reduced graphene oxide. The viscosity of prepared lubricant increases by 35% and 21% for graphite and reduced graphene oxide, respectively. The results of tribological studies with 0.25 wt.% graphite and 0.5 wt.% reduced graphene oxide lubricants showed improvement in coefficient of friction by 32% and 36%, respectively. At these optimal concentrations, the specific wear rate dropped by 51% for reduced graphene oxide. Scanning electron microscopy/energy dispersive spectroscopy, images show that the nanolubricant's mending effect over the worn surface improves reduced graphene oxide added SAE20W40 oil tribological characteristics. From the results, reduced graphene oxide synthesized from as-grated graphite rods proves to be a low-cost, sustainable, and effective friction modifier for engine oils.

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“…Composites are manufactured and have different tests such as hardness and X-ray diffraction. Carbon nanotubes in sintered metal matrix composites have been found to have a significant impact on wear properties (6) . Styrene is formed when ethylbenzene has been dehydrogenated.…”

Section: Introductionmentioning

confidence: 99%

ABS - CaSO4 Polymer Composite: Experimental Studies On Mechanical And Tribological Properties

Sreenivasulu¹,

Reddy²

2022

IJST

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Objectives: The present study examines the effect of Calcium Sulphate (CaSO 4 ) microparticles as filler materials and ABS as matrix materials on mechanical properties and wear performance of composite materials, which are injected into molds for preparation of the specimens. Methods: The CaSO 4 microparticles are added at different weight fractions to the acrylonitrile butadiene styrene (ABS) polymer composites. Moreover, the reinforcement has improved tensile strength, wear properties, and hardness. Wear behavior was measured on ABS/ CaSO 4 by a wear monitor (ASTM G99) and pin-ondisc type friction. As part of this experiment, the cutting speed, loading, and sliding distance of composite materials are considered and optimized for their properties. To observe and analyze the characteristics of this material, tensile strength and wear tests were conducted. By analyzing SEM images, we were able to study the fractured material's morphology. In this study, an orthogonal array (L 9 ) and control parameters were used to examine wear debris that explored the flacks and grooves of the content. Findings: An increase in toughness and modulus of resilience (due to an increase in filler content) and the contribution of normal load to wear rate (37.44%) constitute the most important contribution to work. Novelty : we have evaluated the various tribological and mechanical properties of polymer composite specimens using the Taguchi method.

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Development and characterization of multiwalled carbon nanotube-reinforced microwave sintered hybrid aluminum metal matrix composites: An experimental investigation on mechanical and tribological performances

Cited by 10 publications

References 30 publications

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Synthesis of chemically exfoliated reduced graphene oxide from as-grated graphite rods recovered from used household batteries for utilization in tribological applications

ABS - CaSO4 Polymer Composite: Experimental Studies On Mechanical And Tribological Properties

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