Journal
LUBRICANTS
Volume 10, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/lubricants10070137
Keywords
engine tribology; GNs nanomaterials; lubricant additives; tribo-film mechanisms
Categories
Funding
- Deputyship for Research and Innovation, Ministry of Education in Saudi Arabia [IF_2020_NBU_425]
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This paper examines the effects of adding graphene nanoplates to SAE 5W-30 oil on the rheological and tribological properties of the lubricant. The results show that the addition of graphene nanoplates can significantly improve the wear and friction properties of the oil, as well as enhance its thermal conductivity and flashpoint.
Nanoparticles dispersed in lubricants are being studied for their ability to reduce friction and wear. This paper examines SAE 5W-30 oil enhanced with dispersed graphene nanoplates for tribological and rheological properties. Graphene nanoplate (GNs) concentration effects on the rheological and tribological properties of 5W-30 base oil (0.03, 0.06, 0.09, 0.12, and 0.15 wt percent) were tested. Under various loads, a four-ball testing model was used to conduct a tribological analysis (200, 400, 600, and 800 N). Kinematic viscosity is calculated, and base oil and nanofluid-added 5W30 lubricant are compared for thermal conductivity and flashpoint. Wear scar and coefficient of friction improved by 15% and 33% with nano-additives. When related to the base oil, the flashpoint, thermal conductivity, kinematic viscosity, and pour point all increased, by 25.4%, 77.4%, 29.9%, and 35.4%, respectively. The addition of GNs improved the properties of 5W30 engine oil.
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