Influence of graphene and multi-walled carbon nanotube additives on tribological behaviour of lubricants. (2018)

• Record Type: Journal Article
• Authors: Singh, Rabesh Kumar; Dixit, Amit Rai; Sharma, Anuj Kumar; Tiwari, Arun Kumar; Mandal, Vimal; Pramanik, Alokesh
• Is Part Of: International journal of surface science and engineering. Volume 12:Number 3(2018)
• Page Start: 207
• Page End: 227
• Publication Date: 2018
• Subjects: nanolubricants -- wear depth -- coefficient of friction -- graphene -- multi-walled carbon nanotube -- additives -- tribology -- surface science -- tribometer -- mending effect -- viscosity -- thermal conductivity; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Surfaces (Technology) -- Periodicals; Tribology -- Periodicals; 530.417
• Languages: English
• ISSNs: 1749-785X

Abstract

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.