An Investigation on Tribological Properties and Lubrication Mechanism of Graphite Nanoparticles as Vegetable Based Oil Additive

Su, Yu; Gong, Lian; Chen, Dandan

doi:10.1155/2015/276753

Cited by 64 publications

(41 citation statements)

References 16 publications

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“…In the same vein, the tribological parameters in our research work are much better than those of Anand et al [61] who used phosphonium ionic liquid additives in diesel engine lubricants. More to the point, the experimental predictions in our research effort on wear and friction minimization are even far superior to the findings of Chen et al [62] and Su et al [63] who used nano-additives in different lubricating media. With an advantage, the calculated values of mass and volume losses of the aluminum pin show that polytron additive attenuates the mass wear rate by an order of magnitude while the volume wear rate of aluminum is alleviated by two orders of magnitude and these outcomes in sequence yield just a nominal value for the wear coefficient as can be noticed from Table 8.…”

Section: Resultscontrasting

confidence: 74%

Experimental Results of the Tribology of Aluminum in the Presence of Polytron Additive

Ahmer¹,

Khan²,

Shah³

et al. 2019

Friction, Lubrication and Wear

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Friction is an ever-present obstacle that causes energy loss in mechanical parts. To alleviate this nuisance, we carried out experimental studies on a brand new additive called Polytron to assess its role in the minimization of friction and wear. The wear, the volume wear rate, the wear coefficient, and the coefficient of friction of the aluminum surface were measured at room temperature with pin-on-disk tribometer without and with 10% Polytron in Helix oil. In the base oil Helix, their values were found to be 70 μm, 1.28 × 10 −3 mm 3 / min , 1.27 × 10 −10 m 2 / N , and 0.012, respectively, which with the incorporation of Polytron additive in the Helix oil correspondingly reduced to 20μm , 6.08 × 10 −5 mm 3 / min , 4.22 × 10 −11 m 2 ___ N , and 0.004. The experimental verdict points to an ionic character of the additive in that it impregnates the crystal structure of the metal, thereby prompting a hard surface layer which subsequently curtails wear and friction.

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Section: Resultscontrasting

confidence: 74%

Experimental Results of the Tribology of Aluminum in the Presence of Polytron Additive

Ahmer¹,

Khan²,

Shah³

et al. 2019

Friction, Lubrication and Wear

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show abstract

“…Hu substances to produce a lubricating film that reduces the surface friction and wear. Su et al [105] observed the lubricating wear scar surface of 0.25% graphite nanoparticles added to plant-based oil. Graphite nanoparticles can be stably adsorbed on friction surface, which forms a physical adsorption film on a friction surface.…”

Section: Film Formation Mechanismmentioning

confidence: 99%

“…Nanomaterials can fill a concave area on a friction surface to smoothen it. Su et al [105] developed a model for simulating the self-healing mechanisms of nanomaterials (Fig. 6).…”

Section: Self-healing Mechanismmentioning

confidence: 99%

Recent advances in friction and lubrication of graphene and other 2D materials: Mechanisms and applications

et al. 2019

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Two-dimensional materials having a layered structure comprise a monolayer or multilayers of atomic thickness and ultra-low shear strength. Their high specific surface area, in-plane strength, weak layer-layer interaction, and surface chemical stability result in remarkably low friction and wear-resisting properties. Thus, 2D materials have attracted considerable attention. In recent years, great advances have been made in the scientific research and industrial applications of anti-friction, anti-wear, and lubrication of 2D materials. In this article, the basic nanoscale friction mechanisms of 2D materials including interfacial friction and surface friction mechanisms are summarized. This paper also includes a review of reports on lubrication mechanisms based on the film-formation, self-healing, and ball bearing mechanisms and applications based on lubricant additives, nanoscale lubricating films, and space lubrication materials of 2D materials in detail. Finally, the challenges and potential applications of 2D materials in the field of lubrication were also presented.

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“…Minh et al, [20] claimed that Al2O3 nanoparticles produced excellent tribological and anti-toxic properties. While Su et al, [34] mentioned that graphite nanoparticles were able to reduce anti-friction characteristics where a physical deposition layer could form on the surface thereby resulting in low friction forces. Sayuti et al, [35] revealed that the Vickers hardness of silicon dioxide (SiO2) nanoparticle is 1000kgfmm-2 which possesses good mechanical properties of hard and brittle particles.…”

Section: Nanomaterialsmentioning

confidence: 99%

Thermal Conductivity and Dynamic Viscosity of Nanofluids: A Review

Safiei

Rahman

Kulkarni

et al. 2020

ARFMTS

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Thermal conductivity is one of the rheology properties that vital for engineering fluid which indispensable for heat transfer enhancement. For this reason, nanofluid is getting wider attention nowadays due to the presence of nanoparticles in the base fluid can further improve thermal conductivity and dynamic viscosity. These are two important properties for new engineering fluid in providing better cooling and lubricating effects, especially in mechanical and tribology applications. In this paper, specifically, nanofluids thermal conductivity and dynamic viscosity are discussed comprehensively. Both properties' thermal conductivity and viscosity of nanofluids are improved over the base fluid. Furthermore, these two properties increase when more volume concentrations of nanoparticles are added. In addition, the thermal conductivity also improved with increasing the temperature. From the literature review, the maximum enhancement of thermal conductivity for single nanofluid is recorded 36% of MWCNTs in distilled water. On the other hand, the maximum enhancement of viscosity is recorded 39% of Al2O3 in water-ethylene glycol over base fluid. The hybrid nanofluids that consist of more than one type of nanoparticles exhibit better thermal conductivity where the maximum enhancement is recorded 68% of Cu-TiO2 in deionized water. For dynamic viscosity measurement, the maximum enhancement of hybrid nanofluids is recorded 168% of MgO-MWCNT in ethylene glycol. Therefore, to sum up, hybrid nanofluids are really promising to enhance heat transfer performance especially for heating and cooling applications. The potential of these nanofluids should be explored extensively to discover its advantages over conventional working fluid.

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An Investigation on Tribological Properties and Lubrication Mechanism of Graphite Nanoparticles as Vegetable Based Oil Additive

Cited by 64 publications

References 16 publications

Experimental Results of the Tribology of Aluminum in the Presence of Polytron Additive

Experimental Results of the Tribology of Aluminum in the Presence of Polytron Additive

Recent advances in friction and lubrication of graphene and other 2D materials: Mechanisms and applications

Thermal Conductivity and Dynamic Viscosity of Nanofluids: A Review

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