Investigation Of Wear Mechanism On The Ball Bearing Tested By Nano-Oil Using Extreme Pressure Method

Mohd Fuad, Mohammad Nur Taufiq (2016) Investigation Of Wear Mechanism On The Ball Bearing Tested By Nano-Oil Using Extreme Pressure Method. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nano-technology currently has plays an important role in reducing engine wear by using an additive in the engine oil. Hexagonal boron nitride (hBN), alumina (Al2O3) and graphite were used as additive in this study. Thus, this study focuses on investigation of wear mechanism on the ball bearing tested by nano-oil using extreme pressure. This is due to the performance of an engine is declining because of the presence of wear in the engine part like piston ring. The purpose of this study is to determine the maximum loading of nano-oil before failure occur using ASTM D2783. A several testing were conduct on the extreme pressure for ball bearing lubricated by nano-oil. This testing was followed according to ASTM D2783-Standard Test Method for Measurement of Extreme-Pressure properties of Lubricating Fluid (Four-Ball Method) for nano-oil. Another objective of this study is to investigate wear mechanism that occurs on the ball bearing worn surface. The wear mechanism that occurs on the ball bearing was investigated by using microscope or scanning electron microscope (SEM). The result show that with the addition of hBN, Al2O3 and graphite nanoparticle in SAE 15w40 was improved the load-carrying ability of lubricating oil. Graphite nanoparticle give lower COF compared to other. Meanwhile, hBN shows a good in anti-wear additive by giving smaller wear rate compare to another nanoparticle. Thus, the nano-oil can give better performance especially when in extreme pressure.

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