The environmental problems that are being caused by the mineral-based lubricants has prompted for exploring the possibility of using vegetable-based oil as a lubricant and this has become a worldwide trend. In the present study, the tribological behavior of the chemically modified rapeseed oil has been studied by using a four-ball tester. The CuO and CeO2 nanoparticles of size less than 50 nm were added to the chemically modified rapeseed oil ranging from 0.1 to 1 wt%. And the friction and antiwear properties were analyzed as per the ASTM standard D4172. The size of the nanoparticles was calculated qualitatively by using Scherrer equation with the help of X-ray diffraction analysis. Tribological results showed that the chemically modified rapeseed oil has good antiwear and friction-reducing properties than the raw rapeseed oil. The addition of oxide nanoparticles at an optimum concentration in the chemically modified rapeseed oil showed the good friction-reducing property nonetheless not good antiwear property. The surface topography of the worn ball surfaces was also studied by using a scanning electron microscope.
SaravananSNagarajanGRaoGL. Combustion characteristics of a stationary diesel engine fuelled with a blend of crude rice bran oil methyl ester and diesel. Energy2010; 35: 94–100.
2.
ArumugamSSriramG. Effect of bio-lubricant and biodiesel-contaminated lubricant on tribological behavior of cylinder liner–piston ring combination. Tribol Trans2012; 55: 438–445.
3.
MetzgerJO. Fats and oils as renewable feedstock for chemistry. Eur J Lipid Sci Technol2009; 111: 865–876.
4.
AsadauskasSPerezJMDudaJL. Oxidative stability and antiwear properties of high oleic vegetable oils. Lubric Eng1996; 52: 877–882.
5.
RandlesSJ. Environmentally considerate ester lubricants for the automotive and engineering industries. J Synth Lubric1992; 9: 145–161.
6.
GhoshPKarmakarG. Evaluation of sunflower oil as a multifunctional lubricating oil additive. Int J Ind Chem2014; 5: 1–10.
7.
ReevesCJMenezesPLJenTC. The influence of fatty acids on tribological and thermal properties of natural oils as sustainable biolubricants. Tribol Int2015; 90: 123–134.
8.
MungrooRPradhanNCGoudVV. Epoxidation of canola oil with hydrogen peroxide catalyzed by acidic ion exchange resin. J Am Oil Chem Soc2008; 85: 887–896.
9.
OkieimenFEBakareOIOkieimenCO. Studies on the epoxidation of rubber seed oil. Ind Crops Prod2002; 15: 139–144.
LathiPSMattiassonB. Green approach for the preparation of biodegradable lubricant base stock from epoxidized vegetable oil. Appl Catal B2007; 69: 207–212.
12.
ErhanSZPerezJM. Biobased industrial fluids and lubricants, Champaign, IL: AOCS Press, 2002, pp. 1–19.
13.
HwangHSErhanSZ. Modification of epoxidized soybean oil for lubricant formulations with improved oxidative stability and low pour point. J Am Oil Chem Soc2001; 78: 1179–1184.
14.
GoudVVPatwardhanAVDindaS. Epoxidation of karanja (Pongamia glabra) oil catalysed by acidic ion exchange resin. Eur J Lipid Sci Technol2007; 109: 575–584.
15.
SalimonJSalihNYousifE. Biolubricants: Raw materials, chemical modifications and environmental benefits. Eur J Lipid Sci Technol2010; 112: 519–530.
16.
Szydłowska‐CzerniakAAmarowiczRSzłykE. Antioxidant capacity of rapeseed meal and rapeseed oils enriched with meal extract. Eur J Lipid Sci Technol2010; 112: 750–760.
17.
SaidurRLeongKYMohammadHA. A review on applications and challenges of nanofluids. Renew Sustain Energy Rev2011; 15: 1646–1668.
18.
ChuHYHsuWCLinJF. The anti-scuffing performance of diamond nano-particles as an oil additive. Wear2010; 268: 960–967.
19.
BattezAHGonzálezRViescaJL. CuO, ZrO2 and ZnO nanoparticles as antiwear additive in oil lubricants. Wear2008; 265: 422–428.
20.
TarasovSKolubaevABelyaevS. Study of friction reduction by nanocopper additives to motor oil. Wear2002; 252: 63–69.
21.
CaixiangGQingzhuLIZhuomingGU. Study on application of CeO2 and CaCO3 nanoparticles in lubricating oils. J Rare Earths2008; 26: 163–167.
22.
LovellMRKabirMAMenezesPL. Influence of boric acid additive size on green lubricant performance. Philos Trans Roy Soc Lond A2010; 368: 4851–4868.
23.
ReevesCJMenezesPLLovellMR. The influence of surface roughness and particulate size on the tribological performance of bio-based multi-functional hybrid lubricants. Tribol Int2015; 88: 40–55.
24.
BorugaddaVBGoudVV. Epoxidation of castor oil fatty acid methyl esters (COFAME) as a lubricant base stock using heterogeneous ion-exchange resin (IR-120) as a catalyst. Energy Procedia2014; 54: 75–84.
25.
MilchertESmagowiczA. Epoxidation of the rapeseed oil with peracetic and performic acid. Czasopismo Techniczne. Chemia2008; 105: 283–291.
26.
SalimonJSalihNYousifE. Synthetic biolubricant basestocks from epoxidized ricinoleic acid: Improved low temperature properties. Kem Ind2011; 60: 127–134.
27.
SalihNSalimonJYousifE. The physicochemical and tribological properties of oleic acid based triester biolubricants. Ind Crops Prod2011; 34: 1089–1096.
28.
HwangHSErhanSZ. Modification of epoxidized soybean oil for lubricant formulations with improved oxidative stability and low pour point. J Am Oil Chem Soc2001; 78: 1179–1184.
29.
JinFLParkSJ. Thermomechanical behavior of epoxy resins modified with epoxidized vegetable oils. Polym Int2008; 57: 577–583.
30.
ASTM D4172-94. Standard test method for wear preventive characteristics of lubricating fluid (Four ball method), West Conshohocken, PA: ASTM, 2010.
31.
WuXZhangXYangS. The study of epoxidized rapeseed oil used as a potential biodegradable lubricant. J Am Oil Chem Soc2000; 77: 561–563.
32.
PadgurskasJRukuizaRProsyčevasI. Tribological properties of lubricant additives of Fe, Cu and Co nanoparticles. Tribol Int2013; 60: 224–232.
33.
GhaedniaHJacksonRL. The effect of nanoparticles on the real area of contact, friction, and wear. J Tribol2013; 135: 041603–041603. -1-041610.
34.
ZhengDJSWangYGuanR. The tribology properties of alumina/silica composite nanoparticles as lubricant additives. Appl Surf Sci2011; 257: 5720–5275–5720–5275.
35.
ThottackkadMVPerikinalilRKKumarapillaiPN. Experimental evaluation on the tribological properties of coconut oil by the addition of CuO nanoparticles. Int J Precis Eng Manuf2012; 13: 111–116.
AdhvaryuAErhanSZPerezJM. Tribological studies of thermally and chemically modified vegetable oils for use as environmentally friendly lubricants. Wear2004; 257: 359–367.
38.
ArumugamSSriramG. Preliminary study of nano-and microscale TiO2 additives on tribological behavior of chemically modified rapeseed oil. Tribol Trans2013; 56: 797–805.
39.
AlvesSMBarrosBSTrajanoMF. Tribological behavior of vegetable oil-based lubricants with nanoparticles of oxides in boundary lubrication conditions. Tribol Int2013; 65: 28–36.
