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 100 N load was applied. A minimum for
both disc wear rate (0.40*10-6 mm3/Nm) and ball wear rate
(0.29*10-6 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.
| Original language | English |
|---|---|
| Pages (from-to) | 62-68 |
| Journal | Tribology International |
| Volume | 71 |
| DOIs | |
| Publication status | Published - 2014 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- diamond nanoparticles
- lubrication
- steel contact