A Study on The Tribological Characteristics of Graphite Nano Lubricants

Chang-Gun Lee; Yu-Jin Hwang; Young-Min Choi; Jae-Keun Lee; Cheol Choi; Je-Myung Oh

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자료유형: 학술저널

저자정보: Chang-Gun Lee Yu-Jin Hwang Young-Min Choi Jae-Keun Lee Cheol Choi Je-Myung Oh

저널정보: Korean Society for Precision Engineering International Journal of Precision Engineering and Manufacturing International Journal of Precision Engineering and Manufacturing Vol.10 No.1

발행연도: 2009.1

수록면: 85 - 90 (6page)

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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.

#Graphite nanoparticles #Lubrication #Nano lubricant #Disk-on-disk tribotester #Stribeck curve

참고문헌 (19)

참고문헌 신청

Hsu, S. M. / 2004 / Nano-lubrication: concept and design / Tribology International 37(3):537~545

Sung-Ki Lyu / 2006 / A Study on the Transmission-tribology Design Based on Existing Problem of the Gear Drive and Tribology / International Journal of Precision Engineering and Manufacturing 7(2):3~7

Dong-Hwan Kim / 2004 / Die Life Estimation of Hot Forging for Surface Treatment and Lubricants / International Journal of Precision Engineering and Manufacturing 5(4):5~13

Xue, Q / 1997 / Friction and wear properties of a surface-modified TiO2 nanoparticle as an additive in liquid paraffin / Wear 213(1):29~32

Liu, G / 2004 / Investigation of the mending effect and mechanism of copper nano-particles on a tribologically stressed surface / Tribology Letters 17(4):961~966

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