- Effects of Chemical Composition and Particle Size of Starting Aluminum Source on the Spheroidization in the Flame Fusion Process
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Sun-Hui Eom, Jae-Hwan Pee, Jong-Keun Lee, Kwang-Taek Hwang, Woo-Seok Cho, Kyeong-Ja Kim
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J Korean Powder Metall Inst. 2009;16(6):431-437.
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DOI: https://doi.org/10.4150/KPMI.2009.16.6.431
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- Various inorganic fillers improve the thermal conductivity and physical properties of organic products. Alumina has been used a representative filler in the heat radiation sheet for the heat radiation of electric device. The high filling rate of alumina increases the thermal conductivity and properties of products. We successfully developed the spherical alumina by flame fusion process using the oxygen burner with LPG fuel. In the high temperature flame (2500sim3000°C) of oxygen burner, sprayed powders were melting and then rotated by carrier gas. This surface melting and rotation process made spherical alumina. Especially effects of chemical composition and particle size of stating materials on the melting behavior of starting materials in the flame and spheroidization ratio were investigated. As a result, spheroidization ratio of boehmite and aluminum hydroxide with endothermic reaction of dehydration process was lower than that of the sintered alumina without dehydration reaction.
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Citations
Citations to this article as recorded by  - Comparative Analysis of Commercial Al2O3 Powders and the Dispersion Characteristics of Slurries Produced Using Them
Mo-Se Kwon, Seung-Joon Yoo, Jin-Ho Kim, Kyoung-Hoon Jeong, Jong-Keun Lee, Ung-Soo Kim
Korean Journal of Materials Research.2024; 34(1): 27. CrossRef - Fabrication and Characterization of Al2O3-Siloxane Composite Thermal Pads for Thermal Interface Materials
Seul-Ki Kim, Yeong-Jin Koo, Hyun Sik Kim, Jong-Keun Lee, Kyounghoon Jeong, Younki Lee, Eun Young Jung
Materials.2024; 17(4): 914. CrossRef
- Synthesis of Nano-size Aluminum Nitride Powders by Chemical Vapor Process
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Jae-Hwan Pee, Jong-Chul Park, Yoo-Jin Kim, Kwang-Taek Hwang, So-Ryong Kim
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J Korean Powder Metall Inst. 2008;15(6):496-502.
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DOI: https://doi.org/10.4150/KPMI.2008.15.6.496
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- Aluminum nitride (AlN) powders were prepared by the chemical vapor synthesis (CVS) process in the AlCl_3-NH_3-N_2 system. Aluminum chloride (AlCl_3) as the starting material was gasified in the heating chamber of 300°C. Aluminum chloride gas transported to the furnace in NH_3-N_2 atmosphere at the gas flow rate of 200-400ml/min. For samples synthesized between 700 and 1200°C, the XRD peaks corresponding to AlN were comparatively sharp and also showed an improvement of crystallinity with increasing the reaction temperature. In additions, the average particle size of the AlN powders decreased from 250 to 40 nm, as the reaction temperature increased.
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Citations
Citations to this article as recorded by - A Scale-Up Test for Preparation of AlN by Carbon Reduction and Subsequent Nitridation Method
Hyung-Kyu Park, Sung-Don Kim, Chul-Woo Nam, Dae-Woong Kim, Moon-Soo Kang, Gwang-Hee Shin
Journal of the Korean Institute of Resources Recycling.2016; 25(5): 75. CrossRef - Synthesis of High Purity Aluminum Nitride Nanopowder in Ammonia and Nitrogen Atmosphere by RF Induction Thermal Plasma
Kyung-In Kim, Sung-Churl Choi, Jin-Ho Kim, Kwang-Taek Hwang, Kyu-Sung Han
Journal of the Korean Ceramic Society.2014; 51(3): 201. CrossRef - Synthesis of an aluminum nitride–yttria (AlN–Y2O3) composite from nano-sized porous AlN and YCl3
Jae-Hwan Pee, Jong-Chul Park, Kwang-Taek Hwang, SooRyong Kim, Woo-Seok Cho
Research on Chemical Intermediates.2010; 36(6-7): 801. CrossRef
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