期刊
INTERNATIONAL JOURNAL OF SURFACE SCIENCE AND ENGINEERING
卷 12, 期 3, 页码 207-227出版社
INDERSCIENCE ENTERPRISES LTD
DOI: 10.1504/IJSURFSE.2018.094773
关键词
nanolubricants; wear depth; coefficient of friction; graphene; multi-walled carbon nanotube; additives; tribology; surface science; tribometer; mending effect; viscosity; thermal conductivity
In the present study, the tribological performance of water-based emulsion (lubricant) was investigated by blending carbon fillers such as graphene nanoplatelets and multiwall carbon nanotubes using pin-on-disc tribometer. It was noticed that addition of GnP and MWCNT in water-based emulsion (conventional lubricant) increases the thermal conductivity and viscosity as compared to conventional lubricants. The nanolubricants were supplied with minimum quantity lubrication (MQL) technique at a constant flow rate and pressure in the sliding zone. The addition of 0.8 wt.% concentration of GnP showed 58.39% reduction in coefficient of friction and 61.80% reduction in wear depth compared to the conventional lubricant. Similarly, for 0.8 wt.% concentration of MWCNT showed 26.27% reduction in coefficient of friction and 47.35% reduction in wear depth compared to the conventional lubricant. The sliding surface micrographs were also investigated to explain the synergistic effect of nanoparticles.
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