Experimental study demonstrates reduced friction and wear in metal-ceramic contacts using modified soybean oil, highlighting its potential for eco-friendly lubrication.
Key Points
To evaluate the friction, wear reduction, and thermo-oxidative behavior of soybean-based biolubricants enhanced with protic ionic liquids, graphene nanoplatelets, or their combination.
Evaluated lubrication performance in a severe metal-ceramic tribopair under a pin-on-disk configuration with low-volume lubrication.
Analyzed rheological behavior, viscosity, and thermo-oxidative resistance of epoxidized soybean oil mixtures.
Characterized chemical tribofilm formation inside the wear tracks using X-ray photoelectron spectroscopy.
Epoxidized soybean oil containing 1 wt% protic ionic liquid decreased the friction coefficient by up to 72%.
Addition of 0.1 wt% graphene nanoplatelets to the ionic liquid-modified oil reduced the wear rate by as much as 91%.