Abstract
This article presents numerical and experimental studies into the wear characteristics and lubrication properties of Cu-based clutch containing Cu@C particles (i.e., carbon-coated copper particles). A hybrid elastohydrodynamic lubrication (EHL) model of rough surface contact is established, incorporating equations that consider factors such as micro-asperity contact and particle loading. Tribological tests were carried out by means of a pin-on-disc testing method on a tribometer with transmission lubricating oil for the Cu-based friction material. It has been ascertained that the friction coefficient lessens with the rise in relative sliding velocity and, within a certain range, decreases with increasing load. Numerical calculations indicate that dynamic pressure oil film dominance in load-carrying is influenced by the mass fraction of the particles, which affects the pressure carried by the particles. The worn surface exhibits features such as furrows and particle debris, with a reduction of surface roughness. The research results offer a theoretical and experimental foundation for the research on lubrication and wear phenomena in Cu-based clutch containing Cu@C particles.
Issue Section:
Mixed and Boundary Lubrication
Keywords:
wear and lubrication,
third-body particles,
numerical and experimental,
elastohydrodynamic,
abrasion,
elastohydrodynamic lubrication,
friction
Topics:
Friction,
Lubrication,
Particulate matter,
Pressure,
Stress,
Surface roughness,
Wear,
Lubricating oils
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