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 oil | seizure load, kgf | Average coefficient of friction |
| Base lubricant (EP 140 transmission oil) | 220 | 0.0901 | Base lubricant + long MWCNTs | 230 | 0.0839 | Base lubricant +5 hour Ball milled MWCNTs | 240 | 0.0784 | Base lubricant + 10 hour Ball milled MWCNTs | 260 | 0.0746 | Base lubricant + 20 hour Ball milled MWCNTs | 240 | 0.0783 |
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