Study of tribological properties of lubricating oil blend added with graphene nanoplatelets

Azman, S.S.N. and Zulkifli, Nurin Wahidah Mohd and Masjuki, Haji Hassan and Gulzar, M. and Zahid, R. (2016) Study of tribological properties of lubricating oil blend added with graphene nanoplatelets. Journal of Materials Research, 31 (13). pp. 1932-1938. ISSN 0884-2914, DOI

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This paper investigates the effects of graphene nanoplatelets (GNPs) as additives in palm-oil trimethylolpropane (TMP) ester blended in polyalphaolefin. Different concentrations of GNPs that were ultrasonically homogenized in blended lubricants consist of 95 vol% polyalphaolefin and 5 vol% TMP ester. Physical properties of the nanolubricants were identified and tribological behaviors of GNP in blended lubricants were studied using standard fourball testing and surface analysis was done on the wear surfaces using scanning electron microscopy and energy-dispersive X-ray techniques. Addition of 0.05 wt% GNP in blended lubricant resulted in the lowest coefficient of friction and wear scar diameter, thus selected as the most suitable concentration of GNP in the blended lubricant. Friction and wear were reduced by 5 and 15% respectively, with the presence of 0.05 wt% GNP in the blended lubricant.

Item Type: Article
Uncontrolled Keywords: Additives; Lubricant; Tribology
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Dec 2017 03:59
Last Modified: 16 Jun 2020 05:45

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