- Tribology Properties of Nanodiamond Dispersed Engine Oil
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S.H. Jun, Y.R Uhm, C.K. Rhee
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J Korean Powder Metall Inst. 2011;18(5):417-422.
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DOI: https://doi.org/10.4150/KPMI.2011.18.5.417
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- Hydrophobic nanodiamond (ND) were dispersed in engine oil (Helix Oil, Shell co.) as an additives to improve tribology properties. In this study, nanodiamond prepared by an explosive method was used. Tribology properties of both pure Helix oil and engine oil containing ND additive were evaluated. The rotating disks were made of Gray Cast Iron (240 Hv) and SKD11 (710 Hv). Surface topographies of the disks' wear tracks and friction coefficient were compared. The results show that nanodiamond-dispersed lubricants are capable of reducing these metals' wear loss. The friction coefficient is strongly affected to the hardness of wear track.
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Citations
Citations to this article as recorded by  - Wear Characteristics of Lubricant with Nano-diamond Particles on Al-6061 Aluminum Alloy
Sung-Wan Hwang
Journal of the Korean Society of Manufacturing Process Engineers.2021; 20(12): 16. CrossRef - Tribological properties of nanodiamonds in aqueous suspensions: effect of the surface charge
Zijian Liu, Dustin Leininger, Amir Koolivand, Alex I. Smirnov, Olga Shenderova, Donald W. Brenner, Jacqueline Krim
RSC Advances.2015; 5(96): 78933. CrossRef
- Synthesis of Core/shell Structured Ag/C Nano Particles and Properties on Annealing Conditions
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S.H. Jun, Y.R. Uhm, C.K. Rhee
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J Korean Powder Metall Inst. 2010;17(4):295-301.
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DOI: https://doi.org/10.4150/KPMI.2010.17.4.295
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131
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- Multi shell graphite coated Ag nano particles with core/shell structure were successfully synthesized by pulsed wire evaporation (PWE) method. Ar and CH_4 (10 vol.%) gases were mixed in chamber, which played a role of carrier gas and reaction gas, respectively. Graphite layers on the surface of silver nano particles were coated indiscretely. However, the graphite layers are detached, when the particles are heated up to 250°C in the air atmosphere. In contrast, the graphite coated layer was stable under Ar and N_2 atmosphere, though the core/shell structured particles were heated up to 800°C. The presence of graphite coated layer prevent agglomeration of nanoparticles during heat treatment. The dispersion stability of the carbon coated Ag nanoparticles was higher than those of pure Ag nanoparticles.
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Citations
Citations to this article as recorded by - Fabrication of Carbon-coated Tin Nano-powders by Electrical Wire Explosion in Liquid Media and its Electrochemical Properties
Yoo-Young Kim, Ju-Suck Song, Kwon-Koo Cho
Journal of Korean Powder Metallurgy Institute.2016; 23(4): 317. CrossRef - Study of Mössbauer Spectroscopy for Iron Oxides Synthesized by Pulsed Wire Evaporation (PEW)
Young Rang Uhm
Journal of the Korean Magnetics Society.2014; 24(5): 135. CrossRef
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