Dispersion Stability and Tribological Characteristics of TiO2/SiO2 Nanocomposite-Enriched Biobased Lubricant. Issue 4 (4th July 2017)

• Record Type: Journal Article
• Authors: Gulzar, M.; Masjuki, H. H.; Kalam, M. A.; Varman, M.; Zulkifli, N. W. M.; Mufti, R. A.; Zahid, R.; Yunus, R.
• Is Part Of: Tribology transactions. Volume 60:Issue 4(2017)
• Page Start: 670
• Page End: 680
• Publication Date: 2017-07-04
• Subjects: Biodegradable base stocks -- nanotribology -- antiwear additives -- friction modifiers -- wear mechanisms; Tribology -- Periodicals; 621
• DOI: 10.1080/10402004.2016.1202366
• Languages: English
• ISSNs: 1040-2004

Abstract

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.