Abstract
This study produced alumina (Al2O3) nanovacuum-pump lubricants (NVALs) by involving the dispersion of Al2O3 nanoparticles in a vacuum-pump lubricant (VAL) with oleic as a dispersant. Experiments were conducted to evaluate the suspension performance, thermal conductivity, viscosity, specific heat, tribological performance and vacuum-pump performance of the NVALs. The experimental results obtained from the vacuum-pump performance tests show that the NVALs with Al2O3 concentration of 0.2 wt.% and oleic concentration of 0.025 wt.% yielded the lowest electricity consumption, conserving 2.39% of electricity compared with the VAL. No marked difference was observed between the temperatures of the vacuum pump using VAL and NVAL. Furthermore, evacuation (i.e., the minimal pressure of -99.5 kPa) was reached faster by the vacuum pump with the NVALs, and the evacuation time could be reduced by 4.91% under optimal conditions. In addition, the vacuum pump with the NVALs exhibited superior overall effectiveness under relatively lower ambient temperatures.
Original language | English |
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Pages (from-to) | 4275-4283 |
Number of pages | 9 |
Journal | Journal of Mechanical Science and Technology |
Volume | 30 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2016 Sep 1 |
Keywords
- Alumina (AlO)
- Electricity consumption
- Nanovacuum-pump lubricants (NVALs)
- Tribological performance
- Vacuum pump
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering