Research Article

Effect of Size of Multiwalled Carbon Nanotubes Dispersed in Gear Oils for Improvement of Tribological Properties

Table 5

Results of friction test conducted as per ASTM D 5183.

Test oilseizure load, kgfAverage coefficient of friction

Base lubricant (EP 140 transmission oil)2200.0901
Base lubricant + long MWCNTs2300.0839
Base lubricant +5 hour Ball milled MWCNTs2400.0784
Base lubricant + 10 hour Ball milled MWCNTs2600.0746
Base lubricant + 20 hour Ball milled MWCNTs2400.0783