Journal of Powder Materials

Jin-Chun Kim

13 Articles

Effect of Electrical Parameters and Surrounding Gas on the Electroexplosive Tungsten Nanopowders Characteristics: Young-Soon Kwon, Jin-Chun Kim, Alexander P. Ilyin, Olga B. Nazarenko, Dmitry V. Tikhonov; J Korean Powder Metall Inst. 2012;19(1):49-54.; DOI: https://doi.org/10.4150/KPMI.2012.19.1.049

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Tungsten nanopowders were produced by the method of wires electrical explosion in the different gases. The study of phase and dispersed composition of the powders was carried out. The influence of electrical parameters such as the value of energy input in wire and the arc stage of the explosion was discussed. The factors that make for decreasing the particles size are the lower pressure of surrounding gas and the use of addition of chemically reactive gas.

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Comparison of different tungsten precursors for preparation of tungsten nanopowder by RF induction thermal plasma
Dongyoon Shin, Basudev Swain, Chulwoong Han, Yonghwan Kim, Chan-Gi Lee, Kyung-Soo Park
International Journal of Refractory Metals and Hard Materials.2020; 86: 104995. CrossRef
Facile Synthesis of Single-Phase Alpha-Tungsten Nanopowders from Ammonium Paratungstate by RF Induction Thermal Plasma and Thermochemical Reduction
Dongyoon Shin, Hyun-Woo Shim, Basudev Swain, Kyung-Soo Park, Chan-Gi Lee
Korean Journal of Metals and Materials.2020; 58(11): 798. CrossRef
In-situ synthesis of tungsten nanoparticle attached spherical tungsten micro-powder by inductively coupled thermal plasma process
Chulwoong Han, Hyunwoong Na, Yonghwan Kim, Hanshin Choi
International Journal of Refractory Metals and Hard Materials.2015; 53: 7. CrossRef
Characterization of aluminum nanopowders after long-term storage
O.B. Nazarenko, Yu.A. Amelkovich, A.I. Sechin
Applied Surface Science.2014; 321: 475. CrossRef

Electroexplosive Technology of Nanopowders Production: Current Status and Future Prospects: Young-Soon Kwon, Jin-Chun Kim, Alexander P. Ilyin, Olga B. Nazarenko, Dmitry V. Tikhonov; J Korean Powder Metall Inst. 2012;19(1):40-48.; DOI: https://doi.org/10.4150/KPMI.2012.19.1.040

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The current situation of the nanopowders production technology based on the process of electrical explosion of wires is described. The advantages and disadvantages of the electroexplosive technology are indicated. The results of studies characterizing the effect of the electrical explosion conditions on the nanopowders properties are presented, including latest results: conditions of nanopowders passivation, conditions of nanopowders production having narrow size distribution, the methods of nanopowders diagnostic and standartization. In addition, the application and area of future research on this technology are proposed.

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Characterization of Naturally Aged Iron Nanopowder Produced by Electrical Explosion of Wires
Olga B. Nazarenko, Alexander I. Sechin, Yuliya A. Amelkovich
Metals and Materials International.2021; 27(5): 962. CrossRef
Development of Effectual Substrates for SERS by Nanostructures-on flexible surfaces
Hammad R. Humud, Fatimah Jumaah Moaen
Journal of Physics: Conference Series.2021; 2114(1): 012084. CrossRef
Influence of Factors Affecting the Parameters of Combustion of Aluminum Nanopowders in the Bulk Layer
Alexander I. Sechin, Olga B. Nazarenko, Yuliya A. Amelkovich, Andrey A. Sechin
Materials Science Forum.2019; 970: 257. CrossRef
Effect of electron beam irradiation on thermal and mechanical properties of aluminum based epoxy composites
P.M. Visakh, O.B. Nazarenko, C. Sarath Chandran, T.V. Melnikova, S.Yu. Nazarenko, J.-C. Kim
Radiation Physics and Chemistry.2017; 136: 17. CrossRef
Investigation of coatings produced by the electrospark machining method of steel 45 with electrodes based on carbides of tungsten and titanium
S. V. Nikolenko, N. A. Syui
Protection of Metals and Physical Chemistry of Surfaces.2017; 53(5): 889. CrossRef
Influence of long-term storage on fire hazard properties of metal nanopowders
O S Kyrmakova, A I Sechin, O B Nazarenko
Journal of Physics: Conference Series.2017; 881: 012027. CrossRef
A Study of the Preparation and Properties of Antioxidative Copper Inks with High Electrical Conductivity
Chia-Yang Tsai, Wei-Chen Chang, Guan-Lin Chen, Cheng-Huan Chung, Jun-Xiang Liang, Wei-Yang Ma, Tsun-Neng Yang
Nanoscale Research Letters.2015;[Epub] CrossRef
Characterization of copper nanopowders after natural aging
Yu A Amelkovich, O B Nazarenko, A I Sechin, P M Visakh
IOP Conference Series: Materials Science and Engineering.2015; 81: 012072. CrossRef
Characterization of aluminum nanopowders after long-term storage
O.B. Nazarenko, Yu.A. Amelkovich, A.I. Sechin
Applied Surface Science.2014; 321: 475. CrossRef
Effect of the Gas Composition at the Electrical Explosion of Wires on the Nanopowders Properties
Olga B. Nazarenko, Alexander P. Ilyin, Dmitry V. Tikhonov
Advanced Materials Research.2013; 872: 142. CrossRef
Prospects of Using Nanopowders as Flame Retardant Additives
Olga B. Nazarenko, Yulia A. Amelkovich, Alexander P. Ilyin, Alexander I. Sechin
Advanced Materials Research.2013; 872: 123. CrossRef

Fabrication of Ni-free Fe-based Alloy Nano Powder by Pulsed Wire Evaporation in Liquid: Part 2. Effect of Solvent and Comparison of Fabricated Powder owing to Fabrication Method: Ho-Jin Ryu, Yong-Heui Lee, Kwang-Ug Son, Young-Min Kong, Jin-Chun Kim, Byoung-Kee Kim, Jung-Yeul Yun; J Korean Powder Metall Inst. 2011;18(2):112-121.; DOI: https://doi.org/10.4150/KPMI.2011.18.2.112

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This study investigated the effect of solvent on the fabrication of Ni-free Fe-based alloy nano powders by employing the PWE (pulsed wire evaporation) in liquid and compared the alloy particles fabricated by three different methods (PWE in liquid, PWE in Ar, plasma arc discharge), for high temperature oxidation-resistant metallic porous body for high temperature soot filter system. Three different solvents (ethanol, acetone, distilled water) of liquid were adapted in PWE in liquid process, while X-ray diffraction (XRD), field emission scanning microscope (FE-SEM), and transmission electron microscope (TEM) were used to investigate the characteristics of the Fe-Cr-Al nano powders. The alloy powder synthesized by PWE in ethanol has good particle size and no surface oxidation compared to that of distilled water. Since the Fe-based alloy powders, which were fabricated by PWE in Ar and PAD process, showed surface oxidation by TEM analysis, the PWE in ethanol is the best way to fabricate Fe-based alloy nano powder.

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Effect of Cell Size on the High Temperature Oxidation Properties of Fe-Cr-Al Powder Porous Metal Manufactured by Electro-spray Process
Jae-Sung Oh, Young-Min Kong, Byoung-Kee Kim, Kee-Ahn Lee
Journal of Korean Powder Metallurgy Institute.2014; 21(1): 55. CrossRef

Fabrication of Ni-free Fe-based Alloy Nano Powder by Pulsed Wire Evaporation in Liquid: Part I. Effect of Wire Diameter and Applied Voltage: Ho-Jin Ryu, Yong-Heui Lee, Kwang-Ug Son, Young-Min Kong, Jin-Chun Kim, Byoung-Kee Kim, Jung-Yeul Yun; J Korean Powder Metall Inst. 2011;18(2):105-111.; DOI: https://doi.org/10.4150/KPMI.2011.18.2.105

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This study investigated the effect of wire diameter and applied voltage on the fabrication of Ni-free Fe-based alloy nano powders by employing the PWE (pulsed wire evaporation) in liquid, for high temperature oxidation-resistant metallic porous body for high temperature particulate matter (or soot) filter system. Three different diameter (0.1, 0.2, and 0.3 mm) of alloy wire and various applied voltages from 0.5 to 3.0 kV were main variables in PWE process, while X-ray diffraction (XRD), field emission scanning microscope (FE-SEM), and transmission electron microscope (TEM) were used to investigate the characteristics of the Fe-Cr-Al nano powders. It was controlled the number of explosion events, since evaporated and condensed nano-particles were coalesced to micron-sized secondary particles, when exceeded to the specific number of explosion events, which were not suitable for metallic porous body preparation. As the diameter of alloy wire increased, the voltage for electrical explosion increased and the size of primary particle decreased.

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Fabrication of Fe3O4/Fe/Graphene nanocomposite powder by Electrical Wire Explosion in Liquid Media and its Electrochemical Properties
Yoo-Young Kim, Ji-Seub Choi, Hoi-Jin Lee, Kwon-Koo Cho
Journal of Korean Powder Metallurgy Institute.2017; 24(4): 308. CrossRef
Effect of Cell Size on the High Temperature Oxidation Properties of Fe-Cr-Al Powder Porous Metal Manufactured by Electro-spray Process
Jae-Sung Oh, Young-Min Kong, Byoung-Kee Kim, Kee-Ahn Lee
Journal of Korean Powder Metallurgy Institute.2014; 21(1): 55. CrossRef
Effect of Sintering Temperature on the High Temperature Oxidation of Fe-Cr-Al Powder Porous Metal Manufactured by Electrospray Process
Jae-Sung Oh, Young-Min Kong, Byoung-Kee Kim, Kee-Ahn Lee
Journal of Korean Powder Metallurgy Institute.2012; 19(6): 435. CrossRef

A Study on the Behavior of Combustion Wave Propagation and the Structure of Porous TiNi Body during Self-propagating High-temperature Synthesis Process: Ji-Soon Kim, Victor E. Gjuntera, Jin-Chun Kim, Young-Soon Kwon; J Korean Powder Metall Inst. 2010;17(1):29-35.; DOI: https://doi.org/10.4150/KPMI.2010.17.1.029

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We produced cylindrical porous TiNi bodies by Self-propagating High-temperature Synthesis (SHS) process, varying the heating schedule prior to ignition of a loose preform compact made from (Ti+Ni) powder mixture. To investigate the effect of the heating schedule on the behaviour of combustion wave propagation and the structure of porous TiNi shape-memory alloy (SMA) body, change of temperature in the compact during SHS process was measured as a function of time and used for determining combustion temperature and combustion wave velocity. Microstructure of produced porous TiNi SMA body was observed and the results were discussed with the combustion characteristics. From the results it was concluded that the final average pore size could be controlled either by the combustion wave velocity or by the average temperature of the preform compact prior to ignition.

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Microwave-induced substitutional-combustion reaction of Fe3O4/Al ceramic matrix porous composite
C. C. Lee, N. Yoshikawa, S. Taniguchi
Journal of Materials Science.2011; 46(21): 7004. CrossRef

Production of Fe Amorphous Powders by Gas-Atomization Process and Subsequent Spark Plasma Sintering of Fe amorphous-ductile Cu Composite Powder Produced by Ball-milling Process (II) - II. SPS Behaviors of Composite Powders and their Characteristics -: Jin-Chun Kim, Ji-Soon Kim, H.J. Kim, Jeong-Gon Kim; J Korean Powder Metall Inst. 2009;16(5):326-335.; DOI: https://doi.org/10.4150/KPMI.2009.16.5.326

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Abstract PDF: Fe based (Fe_68.2C_5.9Si_3.5B_6.7P_9.6Cr_2.1Mo_2.0Al_2.0) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The Fe-based amorphous powders and the Fe-Cu composite powders were compacted by a spark plasma sintering (SPS) process. Densification of the Fe amorphous-Cu composited powders by spark plasma sintering of was occurred through a plastic deformation of the each amorphous powder and Cu phase. The SPS samples milled by AGO-2 under 500 rpm had the best homogeneity of Cu phase and showed the smallest Cu pool size. Micro-Vickers hardness of the as-SPSed specimens was changed with the milling processes.

Production of Fe Amorphous Powders by Gas-atomization Process and Subsequent Spark Plasma Sintering of Fe Amorphous-ductile Cu Composite Powders Produced by Ball-milling Process (I) - I. Gas Atomization and Production of Composite Powders -: Ho-Jin Ryu, Jae-Hyun Lim, Ji-Soon Kim, Jin-Chun Kim, H.J. Kim; J Korean Powder Metall Inst. 2009;16(5):316-325.; DOI: https://doi.org/10.4150/KPMI.2009.16.5.316

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Abstract PDF: Fe based (Fe_68.2C_5.9Si_3.5B_6.7P_9.6Cr_2.1Mo_2.0Al_2.0) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The experiment results show that the as-prepared Fe amorphous powders less than 90 mum in size has a fully amorphous phase and its weight fraction was about 73.7%. The as-atomized amorphous Fe powders had a complete spherical shape with very clean surface. Differential scanning calorimetric results of the as-atomized Fe powders less than 90 mum showed that the glass transition, T_g, onset crystallization, T_x, and super-cooled liquid range DeltaT=T_x-T_g were 512, 548 and 36°C, respectively. Fe amorphous powders were mixed and deformed well with 10 wt.% Cu by using AGO-2 high energy ball mill under 500 rpm.

Preparation of Ultrafine TiCN Powders by Mg-reduction of Metallic Chlorides: Dong-Won Lee, Jin-Chun Kim, Yong-Jin Kim, Byoung-Kee Kim; J Korean Powder Metall Inst. 2009;16(2):98-103.; DOI: https://doi.org/10.4150/KPMI.2009.16.2.098

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Abstract PDF: The ultrafine titanium carbonitride particles (TiC_0.7N_0.3) below 100nm in mean size were successfully synthesized by Mg-thermal reduction process. The nanostructured sub-stoichiometric titanium carbide (TiC_0.7) particles were produced by the magnesium reduction at 1123K of gaseous TiC_l4+xC_2Cl_4 and the heat treatments in vacuum were performed for five hours to remove residual magnesium and magnesium chloride mixed with TiC_0.7. And final TiC_0.7N_0.3 phase was obtained by nitrification under normal N_2 gas at 1373K for 2 hrs. The purity of produced TiC_0.7N_0.3 particles was above 99.3% and the oxygen contents below 0.2 wt%. We investigated in particular the effects of the temperatures in vacuum treatment on the particle refinement of final product.

The Formation and Crystallization of Amorphous Ti₅₀Cu₅₀Ni₂₀Al₁₀ Powder Prepared by High-Energy Ball Milling: Nguyen Hoang Viet, Jin-Chun Kim, Ji-Soon Kim, Young-Soon Kwon; J Korean Powder Metall Inst. 2009;16(1):9-15.; DOI: https://doi.org/10.4150/KPMI.2009.16.1.009

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Amorphization and crystallization behaviors of Ti_50Cu_50Ni_20Al_10 powders during high-energy ball milling and subsequent heat treatment were studied. Full amorphization obtained after milling for 30 h was confirmed by X-ray diffraction and transmission electron microscope. The morphology of powders prepared using different milling times was observed by field-emission scanning electron microscope. The powders developed a fine, layered, homogeneous structure with prolonged milling. The crystallization behavior showed that the glass transition, T_g, onset crystallization, T_x, and super cooled liquid range DeltaT=T_x-T_g were 691,771 and 80 K, respectively. The isothermal transformation kinetics was analyzed by the John-Mehn-Avrami equation. The Avrami exponent was close to 2.5, which corresponds to the transformation process with a diffusion-controlled type at nearly constant nucleation rate. The activation energy of crystallization for the alloy in the isothermal annealing process calculated using an Arrhenius plot was 345 kJ/mol.

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Mechanical Properties of Bulk Amorphous Ti50Cu20Ni20Al10Fabricated by High-energy Ball Milling and Spark-plasma Sintering
H.V. Nguyen, J.C. Kim, J.S. Kim, Y.J. Kwon, Y.S. Kwon
Journal of Korean Powder Metallurgy Institute.2009; 16(5): 358. CrossRef

Composite and Spark Plasma Sintering of the Atomized Fe Amorphous Powders and Wire-exploded Cu Nanopowder in Liquid: Jin-Chun Kim, Wang-Heo Goo, Joo-Sik Yoo; J Korean Powder Metall Inst. 2008;15(4):285-291.; DOI: https://doi.org/10.4150/KPMI.2008.15.4.285

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Abstract PDF: Fe based (Fe_68.2C_5.9Si_3.5B_6.7P_9.6Cr_2.1Mo_2.0Al_2.0) amorphous powder were produced by a gas atomization process, and then ductile Cu powder fabricated by the electric explosion of wire(EEW) were mixed in the liquid (methanol) consecutively. The Fe-based amorphous - nanometallic Cu composite powders were compacted by a spark plasma sintering (SPS) processes. The nano-sized Cu powders of sim;nm200 produced by EEW in the methanol were mixed and well coated with the atomized Fe amorphous powders through the simple drying process on the hot plate. The relative density of the compacts obtained by the SPS showed over 98% and its hardness was also found to reach over 1100 Hv.

Fabrication and Properties of High Strength Hypereutectic AI-Si Powders by a Gas Atomization Process II. Extrusion and Mechanical Properties: Yong-Jin Kim, Jin-Chun Kim; J Korean Powder Metall Inst. 2008;15(2):142-147.; DOI: https://doi.org/10.4150/KPMI.2008.15.2.142

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Abstract PDF: The hypereutectic Al-20 wt%Si powders including some amount of Cu, Fe, Mg, Mn were prepared by a gas atomization process. In order to get highly densified Al-Si bulk specimens, the as-atomized and sieved powders were extruded at 500°C, Microstructure and tensile properties of the extruded Al-Si alloys were investigated in this study. Relative density of the extruded samples was over 98%. Ultimate tensile strength (UTS) in stress-strain curves of the extruded powders increased after T6 heat treatments. Elongation of the samples was also increased from 1.4% to 3.2%. The fracture surfaces of the tested pieces showed a fine microstructure and the average grain size was about 1µm.

Spark Plasma Sintering of the Ductile Cu-Gas-atomized Ni Bulk Metallic Glass Composite Powders: Jin-Chun Kim, Yong-Jin Kim, Byoung-Kee Kim, Ji-Soon Kim; J Korean Powder Metall Inst. 2006;13(5):351-359.; DOI: https://doi.org/10.4150/KPMI.2006.13.5.351

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Abstract PDF: Ni based(Ni_57Zr_20Ti_18Si_2Sn_3) bulk metallic glass(BMG) powders were produced by a gas atomization process, and ductile Cu powders were mixed using a spray drying process. The Ni-based amorphous powder and Cu mixed Ni composite powders were compacted by a spark plasma sintering (SPS) processes into cylindrical shape. The relative density varied with the used SPS mold materials such as graphite, hardened steel and WC-Co hard metal. The relative density increased from 87% to 98% when the sintering temperature increased up to 460°C in the WC-Co hard metal mold.

Preparation of Nanosized WO₃ Powder by Chemical Vapor Condensation Process: Jin-Chun Kim, Byoung-Kee Kim; J Korean Powder Metall Inst. 2003;10(3):186-189.; DOI: https://doi.org/10.4150/KPMI.2003.10.3.186

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Abstract PDF: A chemical vapor condensation (CVC) process using the pyrolysis of metal-organic precursors was applied to produce the nanosized WO_3 powders. Morphology and phase changes of the synthesized WO_3 powder as a function of CVC parameters were investigated by XRD, BET and TEM. The agglomerated nanosized monoclinic WO_3 powders with nearly spherical shape and 10-38 nm in mean diameter could be obtained. Conditions to produce the WO_3 nanopowders are presented in this paper.

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