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Continuous Synthesis of Monodisperse Spherical Silica Powder Using Tubular Reaction System
Young-Sang Cho, Chiyeop Hwang, Seong-Jun Kim, U-Hyeon Park
Korean J. Met. Mater. 2022;60(6):409-422.   Published online 2022 May 24
DOI: https://doi.org/10.3365/KJMM.2022.60.6.409

Abstract
In the present study, monodisperse silica nanospheres were synthesized using a tubular reaction system in a continuous way. Screw-type blades were inserted inside a T-mixer for static mixing of the reactant streams which consisted of TEOS and NH4OH/H2O diluted with ethanol, for the continuous synthesis of the silica suspension. The..... More

                        
Synthesis and Sintering of Nanostructured ZrB<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> Composite
나노구조의 ZrB2-Al2O3 복합재료 합성과 소결
In-Jin Shon
손인진
Korean J. Met. Mater. 2021;59(10):692-697.   Published online 2021 Sep 6
DOI: https://doi.org/10.3365/KJMM.2021.59.10.692

Abstract
ZrB2 is considered a candidate material for ultra-high temperature ceramics because of its high thermal conductivity, high melting point, and low coefficient of thermal expansion. Despite these attractive properties, ZrB2 applications are limited by its low fracture toughness below the brittle-ductile transition temperature. To improve its ductile properties, the approach..... More

                        
Synthesis and Sintering of Nanostructured ZrB<sub>2</sub>-SiC Composite
나노구조의 ZrB2-SiC 복합재료 합성과 소결
In-Jin Shon
손인진
Korean J. Met. Mater. 2021;59(7):439-444.   Published online 2021 Jun 11
DOI: https://doi.org/10.3365/KJMM.2021.59.7.439

Abstract
ZrB2 is considered a candidate material for ultra-high temperature ceramics because of its high thermal conductivity, high melting point, and low coefficient of thermal expansion. Despite these attractive properties, applications of ZrB2 are limited by its low fracture toughness below the brittle-ductile transition temperature. To improve its ductile properties, the..... More

                           Cited By 1
A Study on Sebum Hardening Effect of ZnO Powder
Sebum경화 기능형 ZnO powder 특성 연구
Yong Min Jeon, Jin Gu Kwon, Si Hong Ryu, Yeong Cheol Lee, Seong Eui Lee
전용민, 권진구, 유시홍, 이영철, 이성의
Korean J. Met. Mater. 2021;59(3):195-200.   Published online 2021 Feb 19
DOI: https://doi.org/10.3365/KJMM.2021.59.3.195

Abstract
Zinc oxide is transparent inorganic UV absorber and widely used as a sunscreen. But sunscreen on the skin is easily erased by sebum, so zinc oxide with a sebum curing function was studied. In this study, a zinc oxide powder was prepared using zinc chloride and sodium hydroxide via a..... More

                        
Rapid Sintering and Synthesis of Nanocrystalline Ta-ZrO<sub>2</sub> Composite
나노구조 Ta-ZrO2 복합재료 합성과 급속소결
Seong-Eun Kim, In-Jin Shon
김성은, 손인진
Korean J. Met. Mater. 2020;58(11):776-781.   Published online 2020 Oct 15
DOI: https://doi.org/10.3365/KJMM.2020.58.11.776

Abstract
ZrO2 is a promising candidate for knee and hip joint replacements due to its excellent combination of low density, corrosion resistance and biocompatibility. Nevertheless, a low fracture toughness of pure ZrO2 at room temperature limits its wider application in the industry. One of the most obvious ways to solve the..... More

                           Cited By 4
Effect of CaF<sub>2</sub> Addition on the Crystallinity of Hexagonal Boron Nitride Nanoparticles
육방정 질화붕소 나노입자의 결정성에 미치는 불화칼슘 첨가의 영향
Jae-Yong Jung, Yang-Do Kim, Young-Kuk Kim
정재용, 김양도, 김영국
Korean J. Met. Mater. 2018;56(12):915-920.   Published online 2018 Dec 5
DOI: https://doi.org/10.3365/KJMM.2018.56.12.915

Abstract
With the development of modern microelectronics technologies, the power density of electronic devices is rapidly increasing, due to the miniaturization or integration of device elements which operate at high frequency, high power conditions. Resulting thermal problems are known to cause power leakage, device failure and deteriorated performance. To relieve heat..... More

                        
Sintering of a Nanostructured CoZr-ZrO<sub>2</sub> Composite from Mechanochemically Synthesized Powders
기계화학적 합성과 나노구조 CoZr-ZrO2 복합재료 소결
In-Jin Shon, Jin-Kook Yoon, Kyung-Tae Hong
손인진, 윤진국, 홍경태
Korean J. Met. Mater. 2017;55(9):632-636.   Published online 2017 Aug 30
DOI: https://doi.org/10.3365/KJMM.2017.55.9.632

Abstract
Since their development in the 1970s ZrO2 ceramics have been shown to be promising alternative materials for total hip arthroplasty (THA) and total knee arthroplasty (TKA). However, ZrO2 is so brittle that in vivo failure can result from fracture of the ceramic femoral head and fracture of the ceramic acetabular..... More

      
Capture and Solidification of Rare Earth Nuclide (Nd) in LiCl-KCl Eutectic Salt Using a Synthetic Inorganic Composite
무기합성매질을 이용한 LiCl-KCl 공융염 내 희토류 핵종(Nd)의 포집 및 고화
Na-Young Kim, Hee-Chul Eun, Hwan-Seo Park, Do-Hee Ahn
김나영, 은희철, 박환서, 안도희
Korean J. Met. Mater. 2017;55(6):419-426.   Published online 2017 Jun 1
DOI: https://doi.org/10.3365/KJMM.2017.55.6.419

Abstract
In this study, neodymium (Nd) nuclides in LiCl-KCl eutectic salts were captured and solidified using a synthetic inorganic composite (Li2O-SiO2-Al2O3-B2O3), a process that allows the selective capture of Nd and fabrication of a composite with Nd captured from waste, without additional additives or mixing. The Nd nuclides in the LiCl-KCl..... More

      
Optical Devices & Energy Materials
A Study on the Trapping Characteristics of Rhenium Oxide Using Ca(OH)<sub>2</sub>
Ca(OH)2를 이용한 레늄 산화물의 포집반응 특성 연구
Tae-Kyo Lee, Hee-Chul Eun, Jung-Hoon Choi, Ki-Rak Lee, Seung-Youb Han, Hwan-Seo Park
이태교, 은희철, 최정훈, 이기락, 한승엽, 박환서
Korean J. Met. Mater. 2017;55(1):53-59.   Published online 2017 Jan 5
DOI: https://doi.org/10.3365/KJMM.2017.55.1.53

Abstract
The objective of this study was to obtain basic data for trapping gaseous technetium (Tc) oxide generated from the voloxidation process in spent nuclear fuel pyroprocessing. Rhenium (Re) and Ca(OH)2 were used as surrogates for the technetium and a trapping material, respectively. The trapping characteristics of rhenium oxide were investigated..... More

      
Synthesis and Rapid Sintering of Nanocrystalline CoTi-ZrO<sub>2</sub> Composite
나노구조 CoTi-ZrO2 복합재료 합성과 급속소결
In-Jin Shon
손인진
Korean J. Met. Mater. 2016;54(11):826-830.   Published online 2016 Nov 5
DOI: https://doi.org/10.3365/KJMM.2016.54.11.826

Abstract
CoTi and ZrO2 nanopowders were mechanochemically synthesized from CoTiO3 and Zr powders according to the reaction (2CoTiO3 + 3Zr → 2CoTi + 3ZrO2). The milled powders were then consolidated by pulsed current-activated sintering within two minutes under an applied pressure of 80MPa. The average hardness and fracture toughness of the..... More

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