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Investigation on the tribological behaviour of modified jatropha oil enhanced by hexagonal boron nitride particles as a lubricant additive for machining process

Talib, Norfazillah and Rahim, E. A. and Nasir, R. M. (2015) Investigation on the tribological behaviour of modified jatropha oil enhanced by hexagonal boron nitride particles as a lubricant additive for machining process. In: 4th International Conference on Advanced Manufacturing Technology (ICAMT 2015), 20-22 September 2015, Johor Bahru, Malaysia.

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Abstract

Bio-based oil was recently explored as an alternative solution for petroleum-based oil. This is due to the negative impact of petroleum-based oil to humans and environment. However, few disadvantages make the bio-based oil from crude vegetable oil impractical to be implemented as the industrial lubricant. In this study, the crude jatropha oil was chemically modified via transesterification process in order to develop a machining lubricant so called modified jatropha oil (MJO). Afterward, MJO was blended with micro particle of hexagonal boron nitride (hBN) as an additive at various percentage ratio compositions. The mixture between the MJO and additive produces the lubricant sample namely MJ05a. MJ05b and MJ05c. The modification process was crucially needed to enhance the lubricant properties. The friction and wear measurement were carried out on the prepared lubricants by using four ball tribotester. An experimental on orthogonal cutting process was carried out to evaluate the machining performances in terms of cutting force, cutting temperature, chip thickness and tool chip contact length. All samples were compared with commercially synthetic ester (SE). The results reveal that the addition of micro particles additive in the MJO outperformed the SE in terms of friction and wear. Furthermore, the machining performances were significantly related to the tribological behaviour of the lubricant. The small composition of hBN additive in MJO (MJ05a) showed an excellent machining performance compared to all lubricants. It was inferred that the Ml05a were able to have better anti-fiction and anti-wear ability by reducing the machining force and temperature which related to the formation of smaller chip thickness and tool chip contact length. It shows that MJ05a can be considered as an effective machining lubricant that provides superior lubrication properties and hibological behaviours

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: modified jatropha oil; hexagonal boron nitride; sustainable metal working fluid
Subjects: T Technology > TP Chemical technology > TP250-261 Industrial electrochemistry
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 15 Feb 2016 06:12
Last Modified: 15 Feb 2016 06:12
URI: http://eprints.uthm.edu.my/id/eprint/7387
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