Affordable Access

Access to the full text

A study on the tribological characteristics of graphite nano lubricants

Authors
  • Lee, Chang-Gun1
  • Hwang, Yu-Jin1
  • Choi, Young-Min1
  • Lee, Jae-Keun1
  • Choi, Cheol2
  • Oh, Je-Myung2
  • 1 Pusan National University, Department of Mechanical Engineering, San 30, Jangjeon2-dong, Keumjung-gu, Pusan, 609-735, South Korea , Pusan (South Korea)
  • 2 Korea Electric Power Research Institute, Advanced Materials Research Group, 103-16, Munji Dong, Yuseong Gu, Daejeon, 305-380, South Korea , Daejeon (South Korea)
Type
Published Article
Journal
International Journal of Precision Engineering and Manufacturing
Publisher
Korean Society for Precision Engineering
Publication Date
Jan 01, 2009
Volume
10
Issue
1
Pages
85–90
Identifiers
DOI: 10.1007/s12541-009-0013-4
Source
Springer Nature
Keywords
License
Yellow

Abstract

Many researchers have tried to improve the tribological characteristics of lubricants to decrease friction coefficients and wear rates. One approach is simply the use of additives in the base lubricant to change its properties. Recently, nanoparticles have emerged as a new kind of additive because of their size, shape and other properties. A nano lubricant is a new kind of engineering lubricant made of nanoparticles, dispersant, and base lubricant. In this study, graphite nanoparticles were used to fabricate nano lubricants with enhanced tribological properties and lubrication characteristics. The base lubricant used was industrial gear oil, which has a kinematic viscosity of 220 cSt at 40°C. To investigate the physical and tribological properties of nano lubricants, friction coefficients and temperatures were measured by a disk-on-disk tribotester. The surfaces of the fixed plates were observed by a scanning electron microscope and an atomic force microscope to analyze the characteristics of the friction surfaces. The results show that when comparing fixed plates coated with raw and nano lubricants, the plate coated with a nano lubricant containing graphite nanoparticles had a lower friction coefficient and less wear. These results indicate that graphite nanoparticle additives improve the lubrication properties of regular lubricants.

Report this publication

Statistics

Seen <100 times