International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 09 | Sep 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 45 FRICTION AND WEAR PROPERTIES OF LUBRICATING OIL WITH NANOPARTICLES ADDITIVES A REVIEW M.Peeru Naik 1 , Dr.K.T.Balaram Padal 1 1 Mechanical Department, Andhra University, Visakhapatnam, AP, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract – In current equipment reducing of wear and friction is critical to the correct working. The equipment which functions with more complexes requires a serious lubrication. With the use of best quality lubricants in automobile parts allows to withstanding extreme pressures and high temperatures. To improve the friction and wear performance and reducing surface damage different additives with conditions are added to fluid lubricant. Ongoing research work papers have reported that the addition of nano-particles to lubricant oils is successful for the reduction of tribological properties in automobile components. However, in organic solvents or oils the inorganic nano-particles may collect easily in many forms and have poor spreading capacity, with this reason applications of many nano-particles are limited. Whereas the spreading problem can be solved using some physical and chemical approaches. The investigation of tribological properties of lubricating oil with eco friendly additives has been done. Key Words: Tribology, friction, wear, lubrication 1. INTRODUCTION The friction and wear property of a lubricant significantly depends on the additives it involves [1]. However, the additives which are used in lubricant produce severe pollution when they are burned. Therefore it is required to develop new generation pollution-less additives such as green additives. Friction is the main cause for the loss of energy in every mechanical system [2]. Therefore for reducing friction and wear in mechanical systems, one of the most adopted techniques is mineral derived oil (MDL) based lubricants, however, MDL are non-bio degradable in nature and toxic which leads to the foundation for developing eco-friendly lubricants. With this reason the research significantly carried out by adding nanoparticles into the base oils. Whereas, the effectiveness of lubricant greatly depends on the particle size of the additives. Moreover, it is observed that nanoparticles addition in base oil improved the load carrying capacity and reduced coefficient of friction. 2. CURRENT THEORIES A brief review of some selected references on various types and there an application of nanoparticles is presented below. 2.1 Charoo et al. [3] performed wear studies on piston ring and cylinder tribo-pair at different concentrations of IF-MoS 2 additive and reported that at 0.5wt% of IF-MoS 2 showed high lubrication properties and low COF value. 2.2 Khorramian et al. [4] examined the effect of h-BN nanoparticles as an additive in SAE20W40 oil at various concentrations on piston ring and cylinder liner tribo pair. From the results, it is observed that with h-BN nanoparticles the lubrication properties improve significantly. 2.3 Fan et al. [5] explained that the tribological properties were improved by fabricating graphene. 2.4 Kinoshita et al., [6] reported that a significant change in tribological behaviour observed when monolayer graphene oxide sheets were used as additives in water based lubricants against tungsten/stainless steel sliding pair. 2.5 Malleswara Rao, K.N.D et al., [7] conducted experiments on Al-17Si under by adding the GO nano particles in the base oil and reported that addition of GO nanoparticles in base oil significantly improves the lubrication properties. 3. USED MATERIALS For this experimental work, proper types of nanoparticles and base oil has been selected as follows. 3.1 Graphene Oxide (GO) 3.2 Base Oil The finest, highest quality especially SAE20W50 base oils are used to produce the highest performance, superior quality lubricants from Lubrication Engineers. Although these base oils are expensive, no other type of petroleum base oil can match their performance [8-12].