Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Tribological Behavior of Lubricating Oil-Based Nanofluids Containing Ag and Carbon Nanoparticles

Ag 및 탄소 나노윤활유의 제조 및 윤활특성 평가

  • Choi, Cheol (Advanced Materials Research Group, Strategic Technology Laboratory, KEPRI) ;
  • Jung, Mi-Hee (Advanced Materials Research Group, Strategic Technology Laboratory, KEPRI) ;
  • Choi, Young-Min (School of Mechanical Engineering, Pusan National University) ;
  • Oh, Jae-Myung (Advanced Materials Research Group, Strategic Technology Laboratory, KEPRI)
  • 최철 (한국전력 전력연구원 전략기술연구소 전력소재그룹) ;
  • 정미희 (한국전력 전력연구원 전략기술연구소 전력소재그룹) ;
  • 최영민 (부산대학교 공과대학 기계공학부) ;
  • 오제명 (한국전력 전력연구원 전략기술연구소 전력소재그룹)
  • Published : 2008.11.30
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Abstract

Oil-based nanofluids were prepared by dispersing Ag, graphite and carbon black nanoparticles in lubricating oil. Agglomerated nanoparticles were dispersed evenly with a high-speed bead mill and/or ultrasonic homogenizer, and the surfaces of the nanoparticles were modified simultaneously with several dispersants. Their tribological behaviors were evaluated with a pin-on-disk, disk-on-disk and four-ball EP and wear tester. It is obvious that the optimal combination of nanoparticles, surfactants and surface modification process is very important for the dispersity of nanofluids, and it eventually affects the tribological properties as a controlling factor. Results indicate that a relatively larger size and higher concentration of nanoparticles lead to better load-carrying capacity. In contrast, the use of a smaller size and lower concentration of particles is recommended for reducing the friction coefficient of lubricating oil. Moreover, nanofluids with mixed nanoparticles of Ag and graphite are more suitable for the improvement of load-carrying capacity and antiwear properties.

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References

  1. P. Keblinski, J.A. Eastman, D.G. Cahill, Materials Today, 8, 36 (2005) https://doi.org/10.1016/S1369-7021(05)70936-6
  2. Y.Y. Wu, W.C. Tsui and T.C. Liu, Wear, 262, 819 (2007) https://doi.org/10.1016/j.wear.2006.08.021
  3. H.D. Huang, J.P. Tu, L.P. Gan and C.Z. Li, Wear, 261, 140 (2006) https://doi.org/10.1016/j.wear.2005.09.010
  4. S. Tarasov, A. Kolubaev, S. Belyaev, M. Lerner and F. Tepper, Wear, 252, 63 (2002) https://doi.org/10.1016/S0043-1648(01)00860-2
  5. A. Hernandez Battez, R. Gonzalez, J.L. Viesca, J.E. Fernandez, J.M. Diaz Fernandez, A. Machado, R. Chou and J. Riba, Wear, 265, 422 (2008) https://doi.org/10.1016/j.wear.2007.11.013
  6. E. Fernandez Rico, I. Minondo and D. Garcia Cuervo, Wear, 262, 1399 (2007) https://doi.org/10.1016/j.wear.2007.01.022
  7. Z.S. Hu, R. Lai, F. Lou, L.G. Wang, Z.L. Chen, G.X. Chen and J.X. Dong, Wear, 252, 370 (2002) https://doi.org/10.1016/S0043-1648(01)00862-6
  8. W. Liu and S. Chen, Wear, 238, 120 (2000) https://doi.org/10.1016/S0043-1648(99)00344-0
  9. Q. Sunqing, D. Junxiu and C. Guoxu, Wear, 230, 35 (1999) https://doi.org/10.1016/S0043-1648(99)00084-8
  10. S.P. Jang and S.U.S. Choi, Appl. Phys. Lett., 84, 4316 (2004) https://doi.org/10.1063/1.1756684
  11. X. Li, Z. Cao, Z. Zhang and H. Dang, Appl. Surf. Sci., 252, 7856 (2006) https://doi.org/10.1016/j.apsusc.2005.09.068