| Home | E-Submission/Review | Sitemap | Editorial Office |  
Korean Journal of Metals and Materials Search > Browse Articles > Search

Synthesis, Characterization, and Electromagnetic Wave Absorbing Properties of La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>
La0.7Sr0.3MnO3의 합성, 특성 평가 및 전자기파 흡수 특성
Jae Hee Heo, Young-Min Kang
허재희, 강영민
Korean J. Met. Mater. 2023;61(3):183-189.   Published online 2023 Feb 24
DOI: https://doi.org/10.3365/KJMM.2023.61.3.183

Perovskite manganese La0.7Sr0.3MnO3 (LSMO) powders were prepared by sol-gel synthesis and calcination in the temperature (T ) range of 500~1200 o C and their structures and electromagnetic (EM) wave absorption properties were investigated. X-ray diffraction (XRD) analysis revealed that the crystalline perovskite phase can be formed at T ≥ 600 oC...... More

                   Web of Science 1  Crossref 1
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

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

Enhanced Energy-Transfer Properties in Core-Shell Photoluminescent Nanoparticles Using Mesoporous SiO<sub>2</sub> Intermediate Layers
에너지-전이 형광 특성 향상을 위한 다공성 실리카 중간층이 추가된 코어-쉘 나노입자 제조 및 특성평가
Woo Hyeong Sim, Seyun Kim, Weon Ho Shin, Hyung Mo Jeong
심우형, 김세윤, 신원호, 정형모
Korean J. Met. Mater. 2020;58(2):137-144.   Published online 2020 Jan 8
DOI: https://doi.org/10.3365/KJMM.2020.58.2.137

Multi-layer core-shell nanoparticles (YVO4:Nd3+/mSiO2/SiO2) consisting of silica cores (SiO2), mesoporous silica (mSiO2) intermediate layers, and Neodymium doped rare-earth phosphor (YVO4:Nd3+) shell layers were successfully synthesized using the stepwise sol-gel method. The morphological structure and optical properties of the functional core-shell nanoparticles were characterized and evaluated by transmission electron microscopy (TEM),..... More

                   Web of Science 3  Crossref 2
Evaluations of Hydrogen Permeation on Ni-SCYb Nano-Composites Membrane by Sol-Gel Methods
Min Gyeom Kim, Tae Whan Hong
Korean J. Met. Mater. 2018;56(5):406-411.   Published online 2018 May 8
DOI: https://doi.org/10.3365/KJMM.2018.56.5.406

Industrially meaningful hydrogen production process from mixture or syngas certainly must have a cooling process, which is typically pressure swing adsorption (PSA). However, the PSA process involves an exothermic reaction during adsorption. Recently, hydrogen separation research has been in progress in order to develop a cooling process to minimize or..... More

       Crossref 1
Study of Solution-Processed Indium Zinc Oxide TFTs Made by Simultaneous Spin Coating and Ultraviolet Light Irradiation
스핀코팅과 자외선 조사의 동시 적용을 기반한 용액 공정형 Indium Zinc 산화물 트랜지스터 연구
Fei Shan, Sung-Jin Kim
선비, 김성진
Korean J. Met. Mater. 2017;55(8):572-575.   Published online 2017 Aug 1
DOI: https://doi.org/10.3365/KJMM.2017.55.8.572

We investigated solution-processed indium zinc oxide (IZO) thin-film transistors (TFTs) which were fabricated by spin coating with simultaneous irradiation by ultraviolet light. The proposed treatment enhanced the efficient condensation and densification of the oxide semiconducting channel layer by decreasing oxygen-vacancy-related defects and increasing metal-oxide bonds. An IZO TFT irradiated for..... More

Sol-Gel Synthesis of Phosphate-Based Glasses for Hydrophilic Enamel Applications
졸-겔법을 이용한 친수 기능성 법랑용 인산염계 유리 합성
Dae-Sung Kim, Bong-ki Ryu
김대성, 류봉기
Korean J. Met. Mater. 2017;55(4):284-289.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.284

In this study, quaternary phosphate-based sol-gel derived glasses were synthesized from a P2O5-CaO-Na2O-TiO2 system with a high TiO2 content of up to 50 mol%. The sol-gel method was chosen because incorporating a high percentage of titanium into a phosphate network via traditional melt-quench methods is non-trivial. The structure and thermal..... More

Reaction Behavior of High-purity Mullite Container with Melted Solar Salts
천일염 열처리에 사용된 고순도 뮬라이트 용기에 대한 반응거동 고찰
Yeong-Ju Bae, Suk-In Jeong, Nam-Il Kim, Kyung-Sik Ham, Sang-Jin Lee
배영주, 정숙인, 김남일, 함경식, 이상진
Korean J. Met. Mater. 2017;55(3):173-178.   Published online 2017 Mar 3
DOI: https://doi.org/10.3365/KJMM.2017.55.3.173

High-purity and good sinterable mullite powder (3Al2O3・2SiO2) was synthesized by a sol-gel process to prepare a high-purity mullite crucible. The densified mullite crucible was fabricated by slip casting with the powder followed by sintering at 1600 ℃. Solar salt was put into the mullite crucible and then fired at the..... More

Material Analysis & Characterization
Effects of Doping Concentration on the Structural and Optical Properties of Spin-Coated In-doped ZnO Thin Films Grown on Thermally Oxidized ZnO Film/ZnO Buffer Layer/Mica Substrate
Byunggu Kim, Jae-Young Leem
Korean J. Met. Mater. 2017;55(1):67-71.   Published online 2017 Jan 5
DOI: https://doi.org/10.3365/KJMM.2017.55.1.67

ZnO buffer layers were deposited on mica substrates using a sol-gel spin coating method. Then, a thin film of metallic Zn was deposited onto the ZnO buffer layer/mica substrate using a thermal evaporator, and the deposited Zn thin films were then thermally oxidized in a furnace at 500 ℃ for..... More

       Crossref 1
Catalytic Activity and Surface Characteristics of WO<sub>3</sub>-doped MnO<sub>x</sub>-TiO<sub>2</sub> Catalysts for Low-temperature Selective Catalytic Reduction of NO<sub>x</sub> with NH<sub>3</sub>
Byeongkil Shin, Heesoo Lee, Hyun Park
Korean J. Met. Mater. 2016;54(10):787-792.   Published online 2016 Oct 5
DOI: https://doi.org/10.3365/KJMM.2016.54.10.787
The effect of added WO3 on the catalytic activity and surface characteristics of the MnOx-TiO2 system was investigated for the low-temperature selective catalytic reduction of NOx with NH3. Based on physio-chemical characterizations, the specific surface areas of the WO3-MnOx-TiO2 catalysts increased from 76.12 m2/g to 90.29 m2/g as the WO3... More
       Crossref 1
Fabrication of Si/SiO<sub>x</sub> Anode Materials by a Solution Reaction-Based Method for Lithium Ion Batteries
Hyeon-Woo Yang, Jung-Ho Lee, Sang-Chul Jung, Seung-Taek Myung, Woo-Seung Kang, Sun-Jae Kim
Korean J. Met. Mater. 2016;54(10):780-786.   Published online 2016 Oct 5
DOI: https://doi.org/10.3365/KJMM.2016.54.10.780

Si/SiOx composite anodes were prepared using a facile solution reaction-based method. Their initial capacity was significantly improved to 1.3 times that of SiOx by incorporating 3 wt% silicon nanoparticles into the SiOx. The capacity retention of the Si/SiOx anodes after 50 charge-discharge cycles was significantly enhanced, to 99%, compared with..... More

       Crossref 5
1 |
Email Alert
Author's Index
Journal Impact Factor 1.2
The Korean Institute of Metals and Materials
SCImago Journal & Country Rank
Similarity Check
Crossref Cited-by Linking
Editorial Office
The Korean Institute of Metals and Materials
6th Fl., Seocho-daero 56-gil 38, Seocho-gu, Seoul 06633, Korea
TEL: +82-2-557-1071   FAX: +82-2-557-1080   E-mail: metal@kim.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Institute of Metals and Materials.                 Developed in M2PI