Tribology Studies Of Bio-Lubricant On Alloy

Mohamad Noor, Mohamad Shah Nizam (2016) Tribology Studies Of Bio-Lubricant On Alloy. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The wear mechanism of 4340 steel alloy and 6061 aluminum alloy lubricated with fixed amount of new cooking oil with banana peel as additive was investigated using pin-on-disk tester. Alloy has excellent mechanical properties which is stronger, harder and high corrosion resistant. Therefore, many alloys used in industries such as the automotive industry. New cooking oil was chosen for the development of bio-lubricant to replace or minimize the usage mineral oil base lubricant. New cooking oil is a vegetable oil extract from palm tree which is non-toxic to human and has high decomposition rate. These factors give advantages to new cooking oil to be produce as an industrial lubricant. The experimental works were performed using a pin-on-disk tribotester, using 4340 steel and 6061 aluminum as the material for both flat ended pin and modified disk. The test were conducted by dripping 5ml of new cooking oil with banana peel as a lubricating oil on the sliding surface at constant speed, which was 800rpm using constant load, which are 78.48N. In this study, the specific wear rate of the pin and friction coefficient was investigated. The weight loss and surface roughness before and after experiment were analyzed. All the results obtained were compared with the percentage of banana peel in cooking oil. The bio-lubrication of 100% NCO, 95% NCO + 5% BP, 80% NCO + 20% BP and 50% NCO + 50% BP was been investigated at load applied with constant parameter. The result presented, the higher percentage volume of bio-lubricant applied, showed decreasing the dynamics viscosity when increasing the temperature. Friction and wear behaviour showed, by increasing the percentage volumes of bio-lubricant applied, triggered decreasing the friction coefficient, wear and weight losses for alloys. Besides that, higher the hardness of alloys increasing the friction coefficient and wear for alloys. It could be concluded that new cooking oil with banana peel has the potential to be developed as a lubricant.

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