Effect of hexagonal boron nitride nanoparticles as an additive on the extreme pressure properties of engine oil
Abstract
Purpose
This paper aims to investigate the effect of hexagonal boron nitride (hBN) nanoparticles on extreme pressure (EP) properties when used as an additive in lubricating oil.
Design/methodology/approach
The nano-oil was prepared by dispersing an optimal composition of 0.5 vol. per cent of 70 nm hBN in SAE 15W-40 diesel engine oil using a sonication technique. The tribological testing was performed using a four-ball tribometer according to the ASTM standard.
Findings
It was found that the nano-oil has a potential to decelerate the seizure point on the contact surfaces, where higher EP can be obtained. More adhesive wear was observed on the worn surfaces of ball bearing lubricated with SAE 15W-40 diesel engine oil as compared with the nano-oil lubrication.
Originality/value
The results of the experimental studies demonstrated the potential of hBN as an additive for improving the load-carrying ability of lubricating oil.
Keywords
Acknowledgements
The authors gratefully acknowledge contributions from the members of the Green Tribology and Engine Performance (G-TriboE) research group. This research was supported by grants from the World Academy of Sciences (TWAS) (grant number: GLUAR/2013/FKM(2)/A00003), Ministry of Higher Education Malaysia (grant numbers: FRGS/2013/FKM/TK01/02/1/F00163 and FRGS/2013/FTK/TK06/02/3/F00166) and Universiti Teknikal Malaysia Melaka (UTeM) (grants number: PJP/2012/FKM(40A)/S01044 and PJP/2012/FKM(11A)/S01086). This work was originally accepted for and presented at TURKEYTRIB’15.
Citation
Abdullah, M.I.H.C., Abdollah, M.F.B., Tamaldin, N., Amiruddin, H. and Mat Nuri, N.R. (2016), "Effect of hexagonal boron nitride nanoparticles as an additive on the extreme pressure properties of engine oil", Industrial Lubrication and Tribology, Vol. 68 No. 4, pp. 441-445. https://doi.org/10.1108/ILT-10-2015-0157
Publisher
:Emerald Group Publishing Limited
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