Abstract
A new series of novel dicationic symmetrical and asymmetrical ionic liquids (ILs) consisting of tributylalkyl phosphonium and alkylimidazolium were synthesized. Their tribological properties in the form of spin-coated ultra-thin films sliding against AISI-52100 steel ball were studied in a ball-on-plate configuration on a Universal Micro-tribometer-2MT tester, using perfluoropolyether (PFPE) and normal ILs as comparisons. The best result is obtained for asymmetrical 1-(1-tributylphosphine-yl-hexyl)-3-methylimidazolium dihexafluorophosphate, which has very high decomposition temperature-about 450 °C and good tribological properties.
| Original language | English |
|---|---|
| Pages (from-to) | 197-205 |
| Number of pages | 9 |
| Journal | Tribology Letters |
| Volume | 25 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2007 |
| Externally published | Yes |
Keywords
- EDS
- Film thickness
- SEM
- Solid lubrication
- Steel
- Thermal stability
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