The renewability and ecofriendly nature of vegetable oils make them a competitive candidate to replace depleting petroleum-based mineral oils. However, the poor antiwear properties of vegetable oils restrict them from many industrial applications as lubricants. In the present work, the synergic effect of SiO2 nanoparticles with ionic liquids 1-butyl-3- methylimidazolium tetrafluoroborate and 1-hexyl-3-methylimidazolium tetrafluoroborate as hybrid antiwear additives in enhancing the tribological properties of sesame oil is studied for steel on steel contacts. Morphologies of the worn surfaces and possibilities of tribofilm formation are examined using a field-emission scanning electron microscope and energy-dispersive spectroscopy analysis. A density functional theory analysis is performed to study the existence of intermolecular forces of attraction between ionic liquid and triglyceride molecules. Rheological properties of the blends are evaluated using Anton Paar MCR10 rheometer. Corrosive properties of the oil blends are studied using copper strip corrosion test (ASTM D130).
CarnesK. The ten greatest events in tribology history. Tribol Lubr Technol2005; 61: 38.
2.
HöökMTangX. Depletion of fossil fuels and anthropogenic climate change—A review. Energy Policy2013; 52: 797–809.
3.
JayadasN. Evaluation of the oxidative properties of vegetable oils as base stocks for industrial lubricants using spectroscopic and thermogravimetric analyses. J Synth Lubr2008; 25: 105–113.
4.
JayadasNNairKP. Coconut oil as base oil for industrial lubricants—evaluation and modification of thermal, oxidative and low temperature properties. Tribol Int2006; 39: 873–878.
5.
WuXZhangXYangS, et al.The study of epoxidized rapeseed oil used as a potential biodegradable lubricant. J Am Oil Chem Soc2000; 77: 561–563.
6.
RaniSJoyMNairKP. Evaluation of physiochemical and tribological properties of rice bran oil–biodegradable and potential base stoke for industrial lubricants. Ind Crops Prod2015; 65: 328–333.
7.
CastroWPerezJMErhanSZ, et al.A study of the oxidation and wear properties of vegetable oils: soybean oil without additives. J Am Oil Chem Soc2006; 83: 47–52.
8.
AravindAJoyMNairKP. Lubricant properties of biodegradable rubber tree seed (Hevea brasiliensis Muell. Arg) oil. Ind Crops Prod2015; 74: 14–19.
9.
DarmineshSPSidikNACNajafiG, et al.Recent development on biodegradable nano lubricant: a review. Int Commun Heat Mass Transfer2017; 86: 159–165.
10.
BartJCCavallaroSGucciardiE. Biolubricants: science and technology, New York: Elsevier, 2012.
11.
RapoportLFleischerNTenneR. Fullerene-like WS2 nanoparticles: superior lubricants for harsh conditions. Adv Mater2003; 15: 651–655.
12.
BattezAHGonzálezRViescaJ, et al.CuO, ZrO2 and ZnO nanoparticles as antiwear additive in oil lubricants. Wear2008; 265: 422–428.
13.
De-XingPCheng-HsienCKangY, et al.Size effects of SiO2 nanoparticles as oil additives on tribology of lubricant. Ind Lubr Tribol2010; 62: 111.
14.
ZhouYQuJ. Ionic liquids as lubricant additives: a review. ACS Appl Mater Interf2017; 9: 3209–3222.
15.
YuBBansalDGQuJ, et al.Oil-miscible and non-corrosive phosphonium-based ionic liquids as candidate lubricant additives. Wear2012; 289: 58–64.
16.
QuJBansalDGYuB, et al.Antiwear performance and mechanism of an oil-miscible ionic liquid as a lubricant additive. ACS Appl Mater Interf2012; 4: 997–1002.
17.
SomersAEHowlettPCMacFarlaneDR, et al.A review of ionic liquid lubricants. Lubricants2013; 1: 3–21.
18.
ZhouFLiangYLiuW. Ionic liquid lubricants: designed chemistry for engineering applications. Chem Soc Rev2009; 38: 2590–2599.
19.
ChenYYeCWangH, et al.Tribological performance of an ionic liquid as a lubricant for steel/aluminium contacts. J Synth Lubr2003; 20: 217–225.
20.
YeCLiuWChenY, et al.Room-temperature ionic liquids: a novel versatile lubricant. Chem Commun2001212244–2245.
21.
LiuWYeCGongQ, et al.Tribological performance of room-temperature ionic liquids as lubricant. Tribol Lett2002; 13: 81–85.
22.
ShanhuaQXuliangCLiguoL, et al.Tribological properties of the castor oil affected by the additive of the ionic liquid [HMIM] BF4. J Tribol2016; 138: 014501.
23.
NairSSNairKPRajendrakumarPK. Evaluation of physicochemical, thermal and tribological properties of sesame oil (Sesamum indicum L.) a potential agricultural crop base stock for eco-friendly industrial lubricants. Int J Agric Resour Govern Ecol2017; 13: 77–90.
24.
LiZZhuY. Surface-modification of SiO2 nanoparticles with oleic acid. Appl Surf Sci2003; 211: 315–320.
25.
PopLPuşcaşCBandurG, et al.Basestock oils for lubricants from mixtures of corn oil and synthetic diesters. J Am Oil Chem Soc2008; 85: 71–76.
26.
KaruKRuzanovAErsH, et al.Predictions of physicochemical properties of ionic liquids with DFT. Computation2016; 4: 25.
27.
KarkushMOAltaherTA. Risk assessment of AL-Nassyriah oil refinery soil. J Civil Eng Res2016; 6: 16–21.
28.
MamusaM. Colloidal interactions in ionic liquids. Paris6: 2014.
29.
HayesRWarrGGAtkinR. At the interface: solvation and designing ionic liquids. Phys Chem Chem Phys2010; 12: 1709–1723.
30.
FernandesAMRochaMAFreireMG, et al.Evaluation of cation−anion interaction strength in ionic liquids. J Phys Chem B2011; 115: 4033–4041.
31.
IzgorodinaEIBernardULMacFarlaneDR. Ion-pair binding energies of ionic liquids: can DFT compete with ab initio-based methods?J Phys Chem A2009; 113: 7064–7072.
32.
SabarinathSPrabhakaran NairKRajendrakumarP, et al.Styrene butadiene rubber as a viscosity improver: experimental investigations and quantum chemical studies. Proc IMechE, Part J: J Engineering Tribology2017; 232: 427–436. .
33.
JayadasNNairKP. Study of the anti-wear properties of coconut oil using quantum chemical calculations and tribological tests. J Tribol2006; 128: 654–659.
34.
MashugaMEOlasunkanmiLOAdekunleAS, et al.Adsorption, thermodynamic and quantum chemical studies of 1-hexyl-3-methylimidazolium based ionic liquids as corrosion inhibitors for mild steel in HCl. Materials2015; 8: 3607–3632.
