Comparison on tribological properties of vegetable oil upon addition of carbon based nanoparticles

Kiu, Stephen Sie Kiong; Yusup, Suzana; Chok, Vui Soon; Taufiq, Ahmad; Kamil, Ruzaimah Nik Mohamad; Syahrullail, S.; Chin, Bridgid Lai Fui

doi:10.1088/1757-899x/206/1/012043

Cited by 18 publications

(7 citation statements)

References 11 publications

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“…The similar finding was also obtained by Kiu et al [14] whose demonstrated the reduction in friction coefficient and wear when carbon nanotubes was added in the studied on vegetable oil. in addition, according to Cornelio et al [15], the positive effect on lubricant properties by the addition of CNT is might be due to the high elastic modulus of the CNT which reducing the metallic contact between surfaces and leads to reduction of adhesive wear and friction coefficient.…”

Section: Results and Discussion 31 Coefficient Of Frictionsupporting

confidence: 87%

The Effects of Different Nanoparticles in Palm Oil Olein as Solid Additives

Ahmad¹,

Razak²,

Fuad³

et al. 2019

PES

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Palm oil olein and palm oil ester is well-known potential candidate in plant-based oil to replace the conventional mineral oil. Harvested all year round, the advantages and benefits initiate the palm oil to be used in varieties of application. In this paper, palm oil olein was tested on its capability as a lubricant to replace the mineral oil. To enrich the performance of this oil, different types of nanoparticles additives were added. Previous studies proved that by adding small size of additives into lubricating oil can lessen the friction and improve anti-wear properties. The adjustment of the lubricating oil with nanoparticle additives will reduce the friction between two contact surfaces and produce less heat. In his study, three type material of solid additives namely nanoclay and carbon nanotubes were used. Four ball tester following ASTM D4072-94 was conducted to determine the optimum concentration of each additives and its tribological properties under boundary lubrication (metal to metal contact). Result obtained shows that the addition of 0.04 wt% of carbon nanotubes recorded the lowest coefficient of friction with a 10.8% improvement compared to the pure palm oil. The additive also contributed to better wear scar diameters and possessed good anti-wear properties for palm oil. This thus shows the significant potential of carbon nanotubes as the wear preventive additive for palm oil olein. It is also discovered that 0.04 wt% of nanoclays additive is the optimum concentration of the mixture with coefficient of friction reduced 22.16% compared to mineral oil.

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Section: Results and Discussion 31 Coefficient Of Frictionsupporting

confidence: 87%

The Effects of Different Nanoparticles in Palm Oil Olein as Solid Additives

Ahmad¹,

Razak²,

Fuad³

et al. 2019

PES

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“…However, Rapeseed oil exhibit minimum C.O.F at 0.1% CuO concentration. Further researches conducted on the vegetable oil mixed with nanoadditives are shown in Table 9 [33,[220][221][222][223][224][225][226][227].…”

Section: Densitymentioning

confidence: 99%

An overall review on the tribological, thermal and rheological properties of nanolubricants

Shafi

Charoo

2020

Tribology - Materials, Surfaces & Interfaces

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Nanolubrication is one of the recent innovative technologies used in lubrication science. It involves dispersion of various types of nanoparticles in different concentrations in the conventional lubricant and studies the tribological properties of these lubricants on a particular tribopair under different operating parameters. Nanoparticles can be considered as potential lubricant additives. They present several major advantages compared to organic molecules currently used as lubricant additives, which include their nanometre size allowing them to enter the contact area easily. The real contact area is decreased when nanoparticles are entrapped between the mating surfaces. They are often efficient at ambient temperature. Thus, no induction period is necessary to obtain interesting tribological properties. Further, nanoadditives also improve the thermo-physical properties of the lubricant. A comprehensive review is provided with the aim to analyse and explore tribological and thermo-physical properties of nanolubricants on various tribopairs used for engineering applications. Recent advancements like hybrid nanofluids and biolubrication are also discussed that further provides the solutions for sustainable lubrication.

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“…Thus, an optimal concentration of 0.75 wt.% was found for both friction and wear. Optimal concentrations were also found for other nanolubricants [24,[46][47][48][49][50][51][52][53][54], including those containing h-BN nanoparticles [16,17]. At lower concentrations, the base oil governs the behavior because the quantity of nanoparticles is not sufficient to prevent wear whereas when the concentration is too high, the agglomeration allows the creation of new asperities.…”

Section: Tribological Characterizationmentioning

confidence: 99%

Tribological and Thermophysical Properties of Environmentally-Friendly Lubricants Based on Trimethylolpropane Trioleate with Hexagonal Boron Nitride Nanoparticles as an Additive

et al. 2019

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Dispersions based on hexagonal boron nitride, h-BN, nanoparticles, at 0.50, 0.75 and 1.0 wt.% mass concentrations, in an ester base oil composed mainly of trimethylolpropane trioleate, were investigated as potential nanolubricants. The stability of the dispersions was assessed to determine the reliability of the tribological, thermophysical and rheological measurements. Density and viscosity were measured from 278.15 to 373.15 K, while rheological behavior was analyzed at shear rates from 1 to 1000 s −1 at 283.15 K. Newtonian behavior was exhibited by all nanolubricants at the explored conditions, with the exception of the highest concentration at the lowest shear rates, where possible non-Newtonian behavior was observed. Tribological tests were performed under a normal load of 2.5 N. Wear was evaluated by means of a 3D profiler, scanning electron microscopy and confocal Raman microscopy. The best tribological performance was achieved by the 0.75 wt.% nanolubricant, with reductions of 25% in the friction coefficient, 9% in the scar width, 14% in the scar depth, and 22% of the transversal area, all with respect to the neat oil. It was observed that physical protective tribofilms are created between rubbing surfaces.Coatings 2019, 9, 509 2 of 17 relatively weak van der Waals interactions between loosely stacked h-BN sheets that provide excellent lubrication characteristics [9]. h-BN, the softest and most lubricious polymorph of BN, has both high thermal stability and thermal conductivity as well as numerous industrial applications, especially in metalworking processes where cleanliness of the working environment is required [10][11][12]. Additionally, h-BN is an environmentally-friendly material [13], which is being studied as a nanoadditive for liquid lubricants [14-22] because, compared with solid lubricants, liquid lubricant additives present advantages such as faster entrance and replenishment of the sliding interface, and easier removal of wear debris from the contact zone [23].With respect to the tribological behavior of nanolubricants containing h-BN nanoparticles, Mosleh et al. [14] found that when nanoparticles of h-BN, with irregular flake-like shapes and an average size of 70 nm, were dispersed in commercial sheet metal forming fluids, the friction coefficient for titanium-steel pairs showed little or no improvement; nevertheless, the wear reduction using the 1 wt.% h-BN nanodispersion was 55%. Çelik et al. [15] found that an engine oil (Society of Automotive Engineers (SAE) 10 W) containing h-BN nanoparticles of disk-like shape with an average diameter of 114 nm and thickness of 30-70 nm, led to a 14.4% improvement in the friction coefficient and a 65% decrease in the wear rate with respect to the neat oil for an AISI 4140 steel material. Wan et al. [16] studied nanolubricants composed of a formulated oil 15W-40, a dispersant, and h-BN nanoparticles (disks with average diameter of 120 nm and a single layer thickness of around 30 nm), finding that the nanolubricants with low nanoparticle concentrations s...

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Comparison on tribological properties of vegetable oil upon addition of carbon based nanoparticles

Cited by 18 publications

References 11 publications

The Effects of Different Nanoparticles in Palm Oil Olein as Solid Additives

The Effects of Different Nanoparticles in Palm Oil Olein as Solid Additives

An overall review on the tribological, thermal and rheological properties of nanolubricants

Tribological and Thermophysical Properties of Environmentally-Friendly Lubricants Based on Trimethylolpropane Trioleate with Hexagonal Boron Nitride Nanoparticles as an Additive

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