Investigation Of Wear Behaviour By Different Nanoparticles In Conventional Oil On The Ball Bearing Tested Using Extreme Pressure

Mohd Zaini, Norsolleha (2017) Investigation Of Wear Behaviour By Different Nanoparticles In Conventional Oil On The Ball Bearing Tested Using Extreme Pressure. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nanoparticles have been studied as an additive in lubrication oils for improves the tribological properties of lubricant oil to reduce friction and wear. Wear is a process of deterioration or removal material between two surfaces due to sliding or rolling effect. However, wear cannot be eliminated but only can be reduce using a lubricant. Nowadays, lubricant cannot sustain it properties in extreme pressure. Therefore, it is necessary to apply nanoparticles as a new additive in lubricant to reduce wear and improve engine oil efficiency. The purpose of this study is to determine the maximum load of nanoparticle before the failure occur using Four Ball Tester Method according to ASTM D2783 and to investigate the wear types and it’s mechanism that occur on the ball bearing worn surface using a microscope/SEM. Three types of nanoparticle were used in this experiment are Graphite, Alumina (Al2O3) and Zirconia (ZrO2). The oil sample was tested using four ball testers according to ASTM D2783- Standard Test Method for Measurement of Extreme Pressure for Lubricating Fluids (Four Ball Method). Next, oil and additives mixed together using ultrasonic homogenizer and added in four ball tester to determine wear mechanism in Extreme Pressure (EP) properties; friction behavior and sliding metal application by prevent properties of lubricating fluids. Then, wear mechanism occur on the ball tester was analysis using SEM. The result shows that with the addition of Alumina (Al2O3) and Zirconia (ZrO2) nanoparticle in SN 0W-20 was improved the lubrication properties and sustain at extreme pressure. Graphite nanoparticle shows a lower coefficient of friction compared to Zirconia and Alumina. Thus, nano-oil can give better performance especially when under extreme pressure.

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