The paper aims to introduce a sustainable solution in the field of lubrication science. A green nano additive, hexagonal boron nitride (h-BN) is mixed with two biofriendly natural oils (avocado oil and hazelnut oil) and the tribological properties of the nanolubricants are evaluated on a four-ball tribotester. The nanoparticles are less than 100 nm in diameter and are added in varying concentrations of 0-1 wt.%. The tribological properties are evaluated as per ASTM D4172 and the stability of the nanoparticles is measured for a period of 24 hours using a double beam spectrophotometer. The UV spectroscopy results indicate the nanoparticles are stable after the sonication process and sediment very less after 24 hours. The antiwear properties of both natural oil improve with the increase in the concentration of h-BN nanoparticles. The maximum improvement in the wear properties is observed at 1 wt.% and is equal to 19.5% and 36.55% for avocado oil and hazelnut oil respectively. The improvement in the antiwear properties are ascribed to the different nanolubrication mechanisms: tribofilm formation, non-direct contact phenomenon, and entrapment of nanoparticles between wear agglomerates.
AfzalOShafiWKCharooM.Effect of h-BN nanoparticles on the tribological and rheological properties of API-Group I oils. Energy Sources, Part A: Recovery Utilization Environ Effects2020; 1–17.
2.
ShafiWKRainaAUl HaqMI.Friction and wear characteristics of vegetable oils using nanoparticles for sustainable lubrication. Tribology – Mater Surf Interf2018; 12: 27–43.
3.
SajeebARajendrakumarPK.Comparative evaluation of lubricant properties of biodegradable blend of coconut and mustard oil. J Clean Prod2019; 240: 118255.
4.
SabarinathSRajeevSPKumarPR, et al. Development of fully formulated eco-friendly nanolubricant from sesame oil. Appl Nanosci2020; 10: 577–586.
5.
PadminiRVamsi KrishnaPKrishna Mohana RaoG.Effectiveness of vegetable oil based nanofluids as potential cutting fluids in turning AISI 1040 steel. Tribol Int2016; 94: 490–501.
6.
BahariALewisRSlatterT.Friction and wear phenomena of vegetable oil–based lubricants with additives at severe sliding wear conditions. Tribol Trans2018; 61: 207–219.
7.
ReevesCJMenezesPLJenT-C, et al. The influence of fatty acids on tribological and thermal properties of natural oils as sustainable biolubricants. Tribol Int2015; 90: 123–134.
8.
ShafiWCharooM.Effect of temperature, concentration and aggregation on the rheological behavior of ZrO 2-avocado oil nanolubricant. Tribol Ind2020; 42: 407–418.
9.
BhaumikSDattaSPathakS.Analyses of tribological properties of castor oil with various carbonaceous micro-and nano-friction modifiers. Journal of Tribology2017; 139
10.
SinghYAbd RahimE.Michelia champaca: sustainable novel non-edible oil as nano based bio-lubricant with tribological investigation. Fuel2020; 282: 118830.
11.
GuptaRNHarshaASinghS.Tribological study on rapeseed oil with nano-additives in close contact sliding situation. Appl Nanosci2018; 8: 567–580.
12.
NagabhooshanamNBaskarSPrabhuTR, et al. Evaluation of tribological characteristics of nano zirconia dispersed biodegradable canola oil methyl ester metalworking fluid. Tribol Int2020; 151: 106510.
13.
PhilipJTKoshyCPMathewMD, et al. Tribological characteristic evaluation of coconut oil dispersed with surfactant modified ceria-zirconia hybrid nanoparticles. Tribol – Mater Surf Interf2019; 13: 197–214.
14.
GulzarMMasjukiHHVarmanM, et al. Improving the AW/EP ability of chemically modified palm oil by adding CuO and MoS2 nanoparticles. Tribol Int2015; 88: 271–279.
15.
ShafiWKCharooM.An overall review on the tribological, thermal and rheological properties of nanolubricants. Tribol – Mater Surf Interf2020; 15: 1–35.
16.
ChoD-HKimJ-SKwonS-H, et al. Evaluation of hexagonal boron nitride nano-sheets as a lubricant additive in water. Wear2013; 302: 981–986.
17.
PawlakZKaldonskiTPaiR, et al. A comparative study on the tribological behaviour of hexagonal boron nitride (h-BN) as lubricating micro-particles – an additive in porous sliding bearings for a car clutch. Wear2009; 267: 1198–1202.
18.
AbdullahMIHCAbdollahMFBAmiruddinH, et al. The potential of hBN nanoparticles as friction modifier and antiwear additive in engine oil. Mech Ind2016; 17: 104.
19.
RamtekeSMChelladuraiH.Effects of hexagonal boron nitride based nanofluid on the tribological and performance, emission characteristics of a diesel engine: an experimental study. Eng Rep2020; 2: e12216.
20.
WangYWanZLuL, et al. Friction and wear mechanisms of castor oil with addition of hexagonal boron nitride nanoparticles. Tribol Int2018; 124: 10–22.
21.
AbdollahMFBAmiruddinHJamallulilAD.Experimental analysis of tribological performance of palm oil blended with hexagonal boron nitride nanoparticles as an environment-friendly lubricant. Int J Adv Manuf Technol2020; 106: 4183–4191.
22.
IonescuTFSorcaruA-AGugleaD, et al. Rapeseed oil additivated with hexagonal boron nitride. INCAS Bull2020; 12: 63–72.
23.
ShafiWKCharooM.Avocado oil mixed with an antiwear additive as a potential lubricant – measurement of antiwear and extreme pressure properties. Proc IMechE, Part C: J Mechanical Engineering Science2020; 235: 2087–2098.
24.
ShafiWKCharooM. Antiwear and extreme pressure properties of hazelnut oil blended with ZDDP. Ind Lubr Tribol2020; 73: 297–307.
25.
RicoEFMinondoICuervoDG.Rolling contact fatigue life of AISI 52100 steel balls with mineral and synthetic polyester lubricants with PTFE nanoparticle powder as an additive. Wear2009; 266: 671–677.
26.
GeorgescuCDeleanuLCristeaGC. Tribological behavior of soybean oil. In: Soybean-biomass, yield and productivity. London: IntechOpen, 2018; 5: 69–104.
27.
EsfeMHAfrandMGharehkhaniS, et al. An experimental study on viscosity of alumina-engine oil: effects of temperature and nanoparticles concentration. Int Commun Heat Mass Transfer2016; 76: 202–208.
28.
CermakSCBiresawGIsbellTA, et al. New crop oils – properties as potential lubricants. Ind Crops Prod2013; 44: 232–239.
29.
GangwaniPGuptaMKBijweJ.Synergism between particles of PTFE and hBN to enhance the performance of oils. Wear2017; 384-385: 169–177.
30.
AbdullahMIHCAbdollahMFBTamaldinN, et al. Effect of hexagonal boron nitride nanoparticles as an additive on the extreme pressure properties of engine oil. Ind Lubr Tribol2016; 68: 441–445.
31.
GhaedniaHJacksonRL.The effect of nanoparticles on the real area of contact, friction, and wear. J Tribol2013; 135: 10.
32.
PodgornikBKosecTKocijanA, et al. Tribological behaviour and lubrication performance of hexagonal boron nitride (h-BN) as a replacement for graphite in aluminium forming. Tribol Int2015; 81: 267–275.
33.
MoslehMAtnafuNDBelkJH, et al. Modification of sheet metal forming fluids with dispersed nanoparticles for improved lubrication. Wear2009; 267: 1220–1225.
