To evaluate recently developed aligned multiwalled carbon nanotubes (MWNTs) and dispersed MWNTs for solid lubrication applications, unidirectional sliding friction experiments were conducted with 440C stainless steel balls and hemispherical alumina-yttria stabilized zirconia pins in sliding contact with the MWNTs deposited on quartz disks in air and in vacuum. The results indicate that MWNTs have superior solid lubrication friction properties and endurance lives in air and vacuum under dry conditions. The coefficient of friction of the dispersed MWNTs is close to 0.05 and 0.009 in air and in vacuum, respectively, showing good dry lubricating ability. The wear life of MWNTs exceeds 1 million passes in both air and vacuum showing good durability. In general, the low coefficient of friction can be attributed to the combination of the transferred, agglomerated patches of MWNTs on the counterpart ball or pin surfaces and the presence of tubular MWNTs at interfaces.
|Title of host publication||Proceedings of the World Tribology Congress III - 2005|
|Number of pages||2|
|State||Published - 2005|
|Event||2005 World Tribology Congress III - Washington, D.C., United States|
Duration: Sep 12 2005 → Sep 16 2005
|Name||Proceedings of the World Tribology Congress III - 2005|
|Conference||2005 World Tribology Congress III|
|Period||9/12/05 → 9/16/05|
Copyright 2020 Elsevier B.V., All rights reserved.
- Carbon Nanotube
- Solid Lubricant
- Wear Life
ASJC Scopus subject areas
- Engineering (all)