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

<table class="fixed-width table-group" id="tab4"><tr><td><table class="table"><colgroup><col style="width:20.07em"/><col style="width:10.55em"/></colgroup><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Test Oils</td><td class="align_center">Average wear scar in microns</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Base lubricant (EP 140 transmission oil)</td><td class="align_center">352.353</td></tr><tr><td class="align_left">Base lubricant + long MWCNTs</td><td class="align_center">347.071</td></tr><tr><td class="align_left">Base lubricant + 5 hour Ball milled MWCNTs</td><td class="align_center">335.085</td></tr><tr><td class="align_left">Base lubricant + 10 hour Ball milled MWCNTs</td><td class="align_center">317.954</td></tr><tr><td class="align_left">Base lubricant + 20 hour Ball milled MWCNTs</td><td class="align_center">323.547</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Results of wear test conducted as per ASTM D 4172 at 40 kgf load.</div>

Advances in Tribology

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Table 4

Table 4: Effect of Size of Multiwalled Carbon Nanotubes Dispersed in Gear Oils for Improvement of Tribological Properties 