The effect of functionalisation method on the stability and the thermal conductivity of nanofluid hybrids of carbon nanotubes/gamma alumina

Abbasi, Saloumeh Mesgari; Rashidi, Alimorad; Nemati, Ali; Arzani, Kaveh

doi:10.1016/j.ceramint.2012.10.232

Cited by 180 publications

(51 citation statements)

References 17 publications

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“…Zhang et al [28] used MoS 2 -CNT hybrid nanofluids in grinding and yielded lower G ratio and surface roughness compared to MoS 2 and CNT nanofluids. Moreover, studies on the hybridization of different types of nanoparticles showed an enhancement in thermophysical [29] and tribological [30] properties of base nanofluids. However, the use of hybrid nanofluids as cutting fluids in machining and in turning operations has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations

et al. 2018

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A hybrid lubricant with improved thermal and tribological properties was developed by blending multiwalled carbon nanotubes (MWCNTs) with alumina-based nanoparticles into cutting fluid at fixed volumetric proportions (10:90). The hybrid cutting fluid was prepared in different volumetric concentrations (0.25, 0.75, and 1.25 vol%), and the tribological properties and contact angles were measured using pin-on-disc tribometry and goniometry, respectively. The study showed a reduction in wear and friction coefficient with increasing nanoparticle concentration. The cutting fluid performance was investigated using minimum quantity lubrication (MQL) in the turning of AISI 304 stainless steel. Regression models were developed for measuring the temperature and tool flank wear in terms of cutting speed, feed, depth of the cut, and nanoparticle concentration using response surface methodology. The developed hybrid nanolubricants significantly reduced the tool flank wear and nodal temperature by 11% and 27.36%, respectively, as compared to alumina-based lubricants. Friction 7(2): 153-168 (2019) | https://mc03.manuscriptcentral.com/friction Friction 7(2): 153-168 (2019) | https://mc03.manuscriptcentral.com/frictionFriction 7(2): 153-168 (2019)

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Section: Introductionmentioning

confidence: 99%

Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations

et al. 2018

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“…This may be attributed to the physical collaboration of the mixed nanoparticles. Many researchers have also performed the thermos-physical characterization of hybrid nanofluids and found that hybridization of different types of nanoparticles may enhance the thermos-physical (Abbasi et al, 2013) and tribological (Kanthavel et al, 2016) properties of base nanofluid. However not much significant work could be reported in literature regarding the application of hybrid nanofluids as a cutting fluid in machining, especially in turning operation.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of alumina-graphene hybrid nano-cutting fluid in hard turning

Singh

Sharma

Dixit

et al. 2017

Journal of Cleaner Production

204

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Nanofluid (NF) is a colloidal mixture of metallic or non-metallic particles of nanometre-size in a base fluid. In the present investigation, a hybrid nano-cutting fluid with better thermal and tribological properties has been developed by mixing alumina based nanofluid with graphene nanoplatelets (GnP) in the volumetric concentrations of 0.25, 0.75 and 1.25 vol. %. The prepared hybrid and alumina mixed nanofluids are characterized for their thermal conductivity, viscosity, specific heat and density in various nanoparticle concentrations at different temperatures. Furthermore, pin on disc testing and contact angle measurement of all nanofluid samples are performed to understand their tribological behaviour and wettability, respectively. Later the performance of the prepared cutting fluid was evaluated during turning of AISI 304 steel under minimum quantity lubrication (MQL) technique. The results have also been compared with the results obtained with that of alumina nanofluid. The results clearly establish that the performance of hybrid nanofluid, in terms of cutting force, feed force, thrust force and surface roughness, is significantly better as compared to alumina nanoparticle mixed cutting fluid.

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“…They demonstrated that the heat transfer increased when the hybrid nanofluid was used instead of a simple nanofluid. More research on the effects of hybrid nanofluids on the process of heat transfer can be found in [18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer enhancement inside channel by using the Lattice Boltzmann Method

et al. 2021

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In this study, the Lattice Boltzmann Method (LBM) is employed in order to examine the fluid flow and forced convection heat transfer inside a twodimensional horizontal channel with and without obstacles. In order to enhance the heat and thermal energy transfer within the channel, different obstacle arrangements are posed to the flow field and heat transfer with the purpose of studying their sensitivity to these changes. The results indicate that, when the value of the Reynolds number is maximum, the maximum average Nusselt numbers happens on the lower wall (Case 4). The paper extends the topic to the use of nanofluids to introduce a possibility to enhancement of the heat transfer in the channel with an array of the obstacles with forced convection. For this purpose, the AgMgO/water micropolar hybrid nanofluid is used, and the volume fraction of the nanoparticle (50% Ag and 50% MgO by volume) is set between 0 and 0.02. The results showed that, when the hybrid nanofluid is used instead of a typical nanofluid, the rate of the heat transfer inside the channel increases, especially for the high values of the Reynolds number, and the volume fraction of the nanoparticles. Increasing the volume fraction of the nanoparticles increase the local Nusselt number (1.17-fold). It is shown that the type of obstacle arrangement and the specific nanofluid can exerts significant effects on the characteristics of the flow field and heat transfer in the channel. This study provides a platform for using the LBM to examine fluid flow through discrete obstacles in offset positions.

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The effect of functionalisation method on the stability and the thermal conductivity of nanofluid hybrids of carbon nanotubes/gamma alumina

Cited by 180 publications

References 17 publications

Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations

Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations

Performance evaluation of alumina-graphene hybrid nano-cutting fluid in hard turning

Heat transfer enhancement inside channel by using the Lattice Boltzmann Method

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