Citation
Gulzar, Muhammad and H. H., Masjuki and Kalam, M. A. and Munusamy, Mahendra Varman and Mohd Zulkifli, Nurin Wahidah and Mufti, R. A. and Zahid, R. and Yunus, R.
(2017)
Dispersion stability and tribological characteristics of TiO2/SiO2 nanocomposite-enriched biobased lubricant.
Tribology Transactions, 60 (4).
670 - 680.
ISSN 1040-2004; ESSN: 1547-397X
Abstract
The stable dispersion of nano-additives is highly desirable for the effective lubrication performance of nanolubricants. The compatibility of base oil with selected nano-additives is required for uniform and stable dispersion. This research evaluated the dispersion stability and tribological characteristics of nano-TiO2/SiO2 (average particle size 50 nm) as an additive in a biobased lubricant. The wear protection and friction reducing characteristics of the formulations were evaluated by four-ball extreme pressure tests and piston ring–cylinder liner sliding tests. Surface analysis tools, including scanning electron microscopy, energy-dispersive X-ray spectroscopy, and atomic force microscopy, were used to characterize the worn surfaces. Results showed that the nanolubricants demonstrated appreciable dispersion capability in the absence of a surfactant and an improvement in load-carrying capacity, antiwear behavior, and friction reduction capability.
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