Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
614845 | Tribology International | 2014 | 7 Pages |
Abstract
The tribological properties of evenly distributed and agglomerated nanodiamonds on steel contact surfaces were compared in ethylene glycol lubricated tests using a pin-on-disc tribometer with a steel counter ball. The nanodiamond distributions were studied on silicon and steel surfaces using scanning electron microscopy. Friction and wear decreasing effects were observed with both sprayed and agglomerated nanodiamonds. The average friction coefficient with pure ethylene glycol lubricated contacts decreased from 0.16 to 0.12 with agglomerated nanodiamonds when 100Â N load was applied. A minimum for both disc wear rate (0.40Ã10â6Â mm3/Nm) and ball wear rate (0.29Ã10â6Â mm3/Nm) was observed with agglomerated nanodiamonds. One of the mechanisms of nanodiamond lubrication was observed to be the incorporation of nanodiamond particles in to the tribolayer.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Oskari Elomaa, Jussi Oksanen, Timo J. Hakala, Olga Shenderova, Jari Koskinen,