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H.S. Choi 2 Articles
Production and Properties of Ag Metallic Nanoparticle Fluid by Electrical Explosion of Wire in Liquid
E.J. Park, L.H. Bac, J.S. Kim, Y.S. Kwon, J.C. Kim, H.S. Choi, Y.H. Chung
J Korean Powder Metall Inst. 2009;16(3):217-222.
DOI: https://doi.org/10.4150/KPMI.2009.16.3.217
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AbstractAbstract PDF
This paper presents a novel single-step method to prepare the Ag nanometallic particle dispersed fluid (nanofluid) by electrical explosion of wire in liquid, deionized water (DI water). X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and transmission electron microscope (TEM) were used to investigate the characteristics of the Ag nanofluids. Zeta potential was also used to measure the dispersion properties of the as-prepared Ag nanofluid. Pure Ag phase was detected in the nanofluids using water. FE-SEM analysis shows that the size of the particles formed in DI water was about 88 nm and Zeta potential value was about -43.68 without any physical and chemical treatments. Thermal conductivity of the as-prepared Ag particle dispersed nanofluid shows much higher value than that of pure DI water.

Citations

Citations to this article as recorded by  
  • Synthesis and Characterizations of Physical and Antibacterial Properties of the Ag Nanoparticles by Exploding of Wire Technique
    Abdulkareem M. Hussain, Bilal K. Al-Rawi
    International Journal of Nanoscience.2024;[Epub]     CrossRef
  • The Impact of Particle Size and Surface Treatment of Zirconia Suspension for Photocuring Additive Manufacturing
    Mee-Jin Jun, Jin-Ho Kang, Kumaresan Sakthiabirami, Seyed Aliakbar Hosseini Toopghara, Ye-Seul Kim, Kwi-Dug Yun, Sang-Won Park
    Materials.2023; 16(4): 1670.     CrossRef
  • Preparation and Characteristics of Fluorinated Carbon Nanotube Applied Capacitive Desalination Electrode with Low Energy Consumption
    Hyun-woo Yoo, Ji-hyun Kang, Nam-soo Park, Tae-il Kim, Min-Il Kim, Young-Seak Lee
    Applied Chemistry for Engineering.2016; 27(4): 386.     CrossRef
  • Critical heat flux characteristics of nanofluids based on exfoliated graphite nanoplatelets (xGnPs)
    Eun Ju Park, Sung Dae Park, In Cheol Bang, Young-Bin Park, Hyung Wook Park
    Materials Letters.2012; 81: 193.     CrossRef
  • Platinum nanoparticles reduce ovariectomy-induced bone loss by decreasing osteoclastogenesis
    Woon-Ki Kim, Jin-Chun Kim, Hyun-Jung Park, Ok-Joo Sul, Mi-Hyun Lee, Ji-Soon Kim, Hye-Seon Choi
    Experimental & Molecular Medicine.2012; 44(7): 432.     CrossRef
  • Optimal synthesis and characterization of Ag nanofluids by electrical explosion of wires in liquids
    Eun Ju Park, Seung Won Lee, In Cheol Bang, Hyung Wook Park
    Nanoscale Research Letters.2011;[Epub]     CrossRef
Surface Treatment of Mg95Zn4.3Y0.7 Alloy Powder Consolidates using Plasma Electrolytic Oxidation
J.H. Kim, H.S. Choi, D.H. Kim, D.Y. Hwang, H.S. Kim, T.S. Kim
J Korean Powder Metall Inst. 2008;15(2):95-100.
DOI: https://doi.org/10.4150/KPMI.2008.15.2.095
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AbstractAbstract PDF
The investigation is to modify the mechanical and chemical properties of Mg alloys using a combination of rapid solidification and surface treatment. As the first approach, Mg_95Zn_4.3Y_0.7 was gas atomized and pressure sintered by spark plasma sintering process (SPS), showing much finer microstructure and higher strength than the alloys as cast. Further modification was performed by treating the surface of PM Mg specimen using Plasma electrolytic oxidation (PEO) process. During the PEO processing, MgO layer was initiated to form on the surface of Mg powder compacts, and the thickness and the density of MgO layer were varied with the reaction time. The thickening rate became low with the reaction time due to the limited diffusion rate of Mg ions. The surface morphology, corrosion behavior and wear resistance were also discussed.

Journal of Powder Materials : Journal of Powder Materials