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Microstructure, Thermal and Mechanical Properties of AlN-MgO Composites Prepared by Spark Plasma Sintering
방전 플라즈마 소결법으로 제조된, AlN-MgO 소결체의 미세구조와 열적, 기계적 특성
Mohan Chen, Myungjin Jung, Jung-Won An, Seung Yong Shin, Yunhwi Park, Sunrae Kim, Su Yong Nam, Woo-Jae Lee, Se-Hun Kwon
모한첸, 정명진, 안정원, 신승용, 박윤휘, 김선래, 남수용, 이우재, 권세훈
Korean J. Met. Mater. 2024;62(5):367-376.   Published online 2024 May 5
DOI: https://doi.org/10.3365/KJMM.2024.62.5.367

Abstract
AlN-MgO composites with different compositions were prepared by spark plasma sintering, and the effects of their composition on their microstructure, thermal properties, and mechanical properties were systemically investigated. MgO compositions in the AlN-MgO composites were controlled from 20 to 80 wt%. The results indicated that a phase transition did not..... More

                
A Novel Al-Al<sub>2</sub>O<sub>3</sub> Non-Skid Composite Coating with Improved Wear Resistance Fabricated by Twin Wire Arc Spraying
Twin wire arc spray 공정을 통해 제작된 Al-Al2O3복합소재 미끄럼 방지 코팅의 우수한 마모 저항성
Hansol Kwon, Youngjin Park, Yongjin Kang, Dohyun Kim, Uk Hee Nam, Eungsun Byon
권한솔, 박영진, 강용진, 김도현, 남욱희, 변응선
Korean J. Met. Mater. 2024;62(4):257-266.   Published online 2024 Mar 29
DOI: https://doi.org/10.3365/KJMM.2024.62.4.257

Abstract
In this study, novel non-skid Al-Al2O3 coatings with improved wear resistance were fabricated using twin wire arc spray (TWAS). TWAS Al coating was prepared as a reference sample and representative TWAS parameters (working distance, process gas pressure, arc current) were controlled to fabricate different Al-Al2O3 coatings. The Al-Al2O3 coatings showed..... More

                
Piezoresistive Characteristics of Carbon Nanotube Polymer Composites with Different Filler Content and Aspect Ratio for Pressure Sensors
압력 센서용 탄소 나노 튜브 폴리머 복합체의 필러 함량과 종횡비에 따른 압저항 특성
Jongchan Yoo, Dong-Young Kim, Dong-Kwan Lee, Kunwoo Nam, Sung-Hoon Park
유종찬, 김동영, 이동관, 남건우, 박성훈
Korean J. Met. Mater. 2023;61(10):793-799.   Published online 2023 Sep 25
DOI: https://doi.org/10.3365/KJMM.2023.61.10.793

Abstract
Polymer composites enriched with conductive fillers hold immense potential for flexible pressure sensors, because of the remarkable piezoresistive effect they possess. Research on polymer composite pressure sensors has been actively ongoing because of their flexibility and high electrical resistance performance. This paper presents a comprehensive comparison of the piezoresistive characteristics..... More

                
Synthesis and Rapid Sintering of Ultra Fine TiB<sub>2</sub>-ZrO<sub>2</sub> Composite
초미립 TiB2-ZrO2 복합재료 합성 및 고속 소결
In-Jin Shon
손인진
Korean J. Met. Mater. 2023;61(5):324-329.   Published online 2023 Apr 20
DOI: https://doi.org/10.3365/KJMM.2023.61.5.324

Abstract
TiB2 is considered candidate materials for ultra-high temperature ceramics and cutting tools because of its a high thermal conductivity, a low coefficient of thermal expansion, a high hardness and high melting temperature. Despite these attractive properties, TiB2 applications are limited because it has a low fracture toughness below the brittle-ductile..... More

                
Thermal and Mechanical Properties of Cu-Graphite Composites with Spatial Anisotropy
Geon Hong Ryu, Changil Son, Jeffrey C. Suhling, Jiseok Lee, Sangha Park, Myunghwan Byun
Korean J. Met. Mater. 2023;61(2):120-125.   Published online 2023 Jan 27
DOI: https://doi.org/10.3365/KJMM.2023.61.2.120

Abstract
In the present study, we analyzed the thermal and mechanical properties of Cu-graphite composites (CGCs) with spatially anisotropic graphite layers. These composites were fabricated using a combination of electroless plating and spark plasma sintering (SPS) processes. Thermal conductivities and thermal expansion coefficients of the composites were measured using differential thermal..... More

                
Fabrication of Self-Healable, Robust, and Superhydrophobic Nanocomposite Films
Siwoo Park, Young-Geun Ha
Korean J. Met. Mater. 2023;61(1):54-59.   Published online 2022 Dec 28
DOI: https://doi.org/10.3365/KJMM.2023.61.1.54

Abstract
Despite the recent advances in nature-inspired superhydrophobic surfaces with multifunctional properties such as self-healing, self-cleaning, antibacterial material, anti-biofouling, and oil-water separation in various industrial applications, there have been very few reports of robust superhydrophobic surfaces fabricated via a low-cost method. Herein, we report a rationally designed, self-healable, robust, and superhydrophobic..... More

                   Web of Science 1  Crossref 1
Effect of Fe-Cr-B on the Microstructure and Mechanical Properties of a Powder Injection Molding Processed Fe-Cr-B/316L Stainless Steel Matrix Composite
분말 사출 성형된 Fe-Cr-B/316L 스테인레스강 복합재료의 미세조직과 기계적 특성에 미치는 Fe-Cr-B의 영향
Young-Kyun Kim, Yeun-Ah Joo, Tae-Shik Yoon, Kee-Ahn Lee
김영균, 주연아, 윤태식, 이기안
Korean J. Met. Mater. 2023;61(1):9-17.   Published online 2022 Dec 28
DOI: https://doi.org/10.3365/KJMM.2023.61.1.9

Abstract
Stainless steel-based composites (SMCs) mixed with 316L stainless steel powder and Fe-Cr-B based M alloys powder ed M) powder were manufactured using the powder injection molding (PIM) process, and their microstructure and mechanical properties were investigated. To examine the effect of M content on the properties of SMCs, the M..... More

                
Effect of Metal Film Thickness on Strain-Sensing Performance of Crack-Based Stretchable Hybrid Piezoresistive Electrode
금속 박막 두께가 크랙 기반 신축성 하이브리드 압저항 전극의 스트레인 감지 특성에 미치는 영향
Ji-Yeon Noh, Mirae Kim, Jong-Man Kim
노지연, 김미래, 김종만
Korean J. Met. Mater. 2022;60(12):933-939.   Published online 2022 Nov 25
DOI: https://doi.org/10.3365/KJMM.2022.60.12.933

Abstract
In recent decades, many research efforts have been devoted to developing high-performance stretchable strain sensors due to their potential for application in various emerging wearable sensor systems. This work presents a facile yet highly efficient way of modulating the sensing performance of a thin metal film/conductive composite hybrid piezoresistor-based stretchable..... More

                   Web of Science 1  Crossref 1
Fabricating and Probing Forsterite Li-ion Battery Anode Electrodes
Forsterite 리튬 이온 배터리 음극 제조 및 전기화학적 반응 탐침
Dong-Ju Kim, Byoung-Nam Park
김동주, 박병남
Korean J. Met. Mater. 2022;60(11):851-857.   Published online 2022 Oct 31
DOI: https://doi.org/10.3365/KJMM.2022.60.11.851

Abstract
In an effort to minimize irreversible capacity loss and volume expansion, research on Si nanocomposite materials with a SiOx/Mg2SiO4/SiOx structure through a magnesiothermic reduction process (MTR) has attracted much attention from researchers. Mg2SiO4(forsterite) has been shown to improve the initial coulombic efficiency (ICE) by minimizing the irreversible capacity loss due..... More

                   Web of Science 1
Electrical and Mechanical Properties of Polymer Composite through the Use of Single-Walled Carbon Nanotube and Multi-Walled Carbon Nanotube
단일벽 탄소나노튜브와 다중벽 탄소나노튜브 사용에 따른 고분자 복합체의 기계적, 전기적 물성
Byung-Ho Kang, Oh-Nyoung Hur, Soon-Kook Hong, Sung-Hoon Park
강병호, 허오녕, 홍순국, 박성훈
Korean J. Met. Mater. 2022;60(9):694-700.   Published online 2022 Aug 30
DOI: https://doi.org/10.3365/KJMM.2022.60.9.694

Abstract
To manufacture composites with required properties, it is extremely important to select an appropriate filler. Carbon-based nano materials such as carbon black, graphene and carbon nanotube (CNT) have been extensively investigated as reinforcing and conducting fillers. Because of their high aspect ratio coupled with superior physical properties, 1-dimensional CNTs are..... More

                   Web of Science 5  Crossref 5
Characteristics of Functionalized Carbon Nanotube Composites to Reinforce Hydrogen Storage Applications
수소 저장 적용을 위한 기능화된 카본 나노 튜브 복합체의 강화 특징
Dong-Young Kim, Sung-Hoon Park
김동영, 박성훈
Korean J. Met. Mater. 2022;60(3):237-243.   Published online 2022 Feb 8
DOI: https://doi.org/10.3365/KJMM.2022.60.3.237

Abstract
Recent studies have extensively studied the use of composites of carbon nanotubes (CNTs) dispersed in epoxy resin to mechanically reinforce hydrogen storage and lightweight vehicle applications. The mechanical properties of the composite are strengthened due to load transfer from the epoxy matrix to the CNTs when an external force is..... More

                   Web of Science 2  Crossref 3
Thermal Properties of Copper Matrix-Ceramic Filler Composite Prepared by Polymer Solution Method
Bok-Hyun Oh, Chung-Il Ma, Ji-Yeon Kwak, Heon Kong, Sang-Jin Lee
Korean J. Met. Mater. 2022;60(1):68-75.   Published online 2021 Dec 10
DOI: https://doi.org/10.3365/KJMM.2022.60.1.68

Abstract
A copper (Cu) metal-ceramic filler composite with high thermal conductivity and a suitable thermal expansion coefficient was designed for application as a high-performance heat dissipation material. The purpose of the designed material was to utilize the high thermal conductivity of Cu while lowering its high coefficient of thermal expansion by..... More

                
Nano Silicon Composite with Gelatin/Melamine Derived N-doped Carbon as an Efficient Anode Material for Li-ion Batteries
Venugopal Nulu
Korean J. Met. Mater. 2021;59(11):802-812.   Published online 2021 Oct 28
DOI: https://doi.org/10.3365/KJMM.2021.59.11.802

Abstract
Silicon (Si) has a high theoretical capacity and low working potential vs. Li/Li+, and has been investigated as the most capable negative electrode material for lithium-ion batteries (LIBs). However, Si undergoes significant volume changes during the Li+ alloying/ dealloying processes, leading to unstable cycle life and limiting its practical applicability..... More

                   Web of Science 2  Crossref 2
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

                
Porous MnO<sub>2</sub>/ carbon Hybrid Material with Improved Electrochemical Performance
Venugopal Nulu
Korean J. Met. Mater. 2021;59(9):670-676.   Published online 2021 Aug 4
DOI: https://doi.org/10.3365/KJMM.2021.59.9.670

Abstract
In this work, MnO2 nanoparticles were embedded in a carbon matrix as a porous composite, fabricated using a simple chemical route followed by low-temperature annealing, with activated carbon (AC) as the carbon source in the composite preparation. The porous MnO2/carbon structures contained some selective nanoparticles coated with carbon. The structural..... More

                
Synthesis of Three-Dimensionally Interconnected Hexagonal Boron Nitride Networked Cu-Ni Composite
Zahid Hussain, Hye-Won Yang, Byung-Sang Choi
Korean J. Met. Mater. 2021;59(7):505-513.   Published online 2021 Jun 16
DOI: https://doi.org/10.3365/KJMM.2021.59.7.505

Abstract
A three-dimensionally interconnected hexagonal boron nitride (3Di-hBN) networked Cu-Ni (3DihBN-Cu-Ni) composite was successfully synthesized in situ using a simple two-step process which involved the compaction of mixed Cu-Ni powders (70 wt.% Cu and 30 wt.% Ni) into a disc followed by metal-organic chemical vapor deposition (MOCVD) at 1000 oC. During..... More

                   Web of Science 1  Crossref 2
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

                   Web of Science 2  Crossref 3
Fabrication of WC-Graphene-Al Composites by Rapid Sintering and Their Mechanical Properties
급속소결에 의한 WC-Graphene-Al 복합재료 제조 및 기계적 성질
In-Jin Shon
손인진
Korean J. Met. Mater. 2021;59(6):384-391.   Published online 2021 May 26
DOI: https://doi.org/10.3365/KJMM.2021.59.6.384

Abstract
Tungsten carbides are very attractive because of their superior properties, e.g., high thermal and electrical conductivities, high melting point, high hardness, and relatively high chemical stability. Tungsten carbides with a binder metal, for example Ni or Co, are mainly used to fabricate nozzles, molds and cutting tools in the composite..... More

                   Web of Science 1  Crossref 1
Microstructure and Mechanical Properties of Cu-Ni-Zr-Ti Bulk Metallic Glass Composites by Spark Plasma Sintering
방전플라즈마 소결법에 의해 제조된 Cu-Ni-Zr-Ti 비정질 기지 복합재료의 미세조직 및 기계적 특성
Da Woon Shin, Hong Min, Jin Kyu Lee
신다운, 민 홍, 이진규
Korean J. Met. Mater. 2021;59(5):281-288.   Published online 2021 Apr 6
DOI: https://doi.org/10.3365/KJMM.2021.59.5.281

Abstract
In the present study, Cu54Ni6Zr22Ti18 bulk metallic glass composites were developed by spark plasma sintering(SPS) using gas atomized Cu54Ni6Zr22Ti18 metallic glass powders and Ta powders. Metallic glass composites with Ta phase were fabricated by SPS. The successful consolidation of Cu54Ni6Zr22Ti18 metallic glass matrix composites with the Ta phase was achieved..... More

                   Web of Science 1  Crossref 2
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

                   Web of Science 4  Crossref 5
Mechanical Properties and Rapid Sintering of WC-BN-Al Composites
WC-BN-Al복합재료 급속소결 및 기계적 성질
Seong-Eun Kim, Su-Hwan Hong, In-Jin Shon
김성은, 홍수환, 손인진
Korean J. Met. Mater. 2020;58(7):453-458.   Published online 2020 Jul 5
DOI: https://doi.org/10.3365/KJMM.2020.58.7.453

Abstract
Tungsten carbides are quite attractive for their superior properties, e.g., high melting point, high hardness, high thermal and electrical conductivities, and relatively high chemical stability. Tungsten carbides with a binder metal, for example Co or Ni, are mainly used to produce cutting tools, nozzles and molds in the composite form...... More

                   Web of Science 6  Crossref 7
Mechanical Properties and Fabrication of a Nanostructured Nb-Al<sub>2</sub>O<sub>3</sub> Composite by High Frequency Induction Heating
고주파 유도 가열에 의한 나노구조의 Nb-Al2O3 복합재료 제조와 기계적 성질
Seong-Eun Kim, Se-Hoon Oh, In-Jin Shon
김성은, 오세훈, 손인진
Korean J. Met. Mater. 2019;57(11):701-707.   Published online 2019 Nov 5
DOI: https://doi.org/10.3365/KJMM.2019.57.11.701

Abstract
Al2O3 has a high Young’s modulus (380 GPa), a low density (3.98 g· cm-3), good high-temperature mechanical properties, biocompatibility and excellent oxidation resistance. Al2O3 has been used for automotive, aerospace, bio-materials and various industrial applications. Despite its various merits, the low fracture toughness of the material below the brittle-ductile transition..... More

                   Web of Science 2  Crossref 1
High-Temperature Oxidation of Fe-12Cr-0.3C-4Mn-(13-15)Cu Composite Alloys
Min Jung Kim, Sang-Hwan Bak, Junhee Hahn, Seon Jin Kim, Dong Bok Lee
Korean J. Met. Mater. 2019;57(9):575-581.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.575

Abstract
Alloys of Fe-12Cr-0.3C-4Mn-(13, 14, 15)Cu (wt%) were cast using an induction furnace. They were structurally heterogeneous composites that consisted of a relatively stiff α-Fe matrix and a soft (Cu, Mn)-rich secondary phase. They were developed as self-lubricating, wear-resistant metals. Since the formation of oxides plays an important role in wear,..... More

                   Web of Science 4  Crossref 6
Thermal Conductivity of Three-Dimensionally Interconnected Graphene-Networked Cu Composite Fabricated by a Simple Two-Step Process
Xue Li, Terry Arthur Ring, Byung-Sang Choi
Korean J. Met. Mater. 2019;57(8):529-534.   Published online 2019 Jul 11
DOI: https://doi.org/10.3365/KJMM.2019.57.8.529

Abstract
A Cu composite reinforced by a three-dimensionally interconnected graphene network was synthesized in situ by a simple two-step process utilizing compacted Cu powder (99% purity) as a template for the growth of graphene. Cu composites with different graphene contents were obtained by controlling the processing parameters. The composites were approximated..... More

                   Web of Science 6  Crossref 6
Effect of BN Addition on the Mechanical Properties of AlN
AlN 기계적 성질에 미치는 BN 첨가 영향
Woo-Jin Cho, Se-Hoon Oh, In-Jin Shon
조우진, 오세훈, 손인진
Korean J. Met. Mater. 2019;57(5):310-315.   Published online 2019 Apr 10
DOI: https://doi.org/10.3365/KJMM.2019.57.5.310

Abstract
Aluminum nitride (AlN) has several attractive properties including high thermal conductivity, excellent electrical insulation, a thermal expansion coefficient close to that of Si and low density. Accordingly, it is considered a promising packing material and substrate for high power integrated circuits. However, its low fracture toughness at room temperature limits..... More

                   Web of Science 9  Crossref 9
Synthesis and Characterization of ZnO/TiO<sub>2</sub> Photocatalyst Decorated with PbS QDs for the Degradation of Aniline Blue Solution
Jong-Ho Lee, Hong-Joo Ahn, Jeong-Il Youn, Young-Jig Kim, Su-Jeong Suh, Han-Jun Oh
Korean J. Met. Mater. 2018;56(12):900-909.   Published online 2018 Dec 5
DOI: https://doi.org/10.3365/KJMM.2018.56.12.900

Abstract
A ZnO/TiO2 photocatalyst decorated with PbS quantum dots (QDs) was synthesized to achieve high photocatalytic efficiency for the decomposition of dye in aqueous media. A TiO2 porous layer, as a precursor photocatalyst, was fabricated using micro-arc oxidation, and exhibited irregular porous cells with anatase and rutile crystalline structures. Then, a..... More

                   Crossref 11
Rapid Sintering of Nanocrystalline (W,Ti)C-Graphene Composites
나노구조 (W,Ti)C-Graphene 복합재료 급속소결
Seong-Eun Kim, In-Jin Shon
김성은, 손인진
Korean J. Met. Mater. 2018;56(12):854-860.   Published online 2018 Dec 5
DOI: https://doi.org/10.3365/KJMM.2018.56.12.854

Abstract
In spite of the many attractive properties of (W,Ti)C, its low fracture toughness limits its wide application. To improve the fracture toughness generally a second phase is added to fabricate a nanostructured composite. In this regard, graphene was considered as the reinforcing agent of (W,Ti)C. (W,Ti)C-graphene composites that were sintered..... More

                   Crossref 7
Liquid-Phase Reaction Sintering Behavior at below 200 C and Electrical Sheet Resistance of Sn-58Bi/Cu Composite Pastes
Sn-58Bi/Cu 복합 페이스트의 200 °C 미만 액상 반응 소결 거동과 전기저항 변화
Jun Ho Hwang, Dongshin Jeong, Jong-Hyun Lee
황준호, 정동신, 이종현
Korean J. Met. Mater. 2018;56(6):440-448.   Published online 2018 Jun 4
DOI: https://doi.org/10.3365/KJMM.2018.56.6.440

Abstract
To fabricate a film with the highest electrical conductivity through liquid-phase reaction sintering below 200 °C using composite pastes containing both Sn-58Bi and Cu particles as a filler material, the effects of process parameters, such as the mixing ratio of the fillers, reaction temperature, and reaction time, were evaluated and..... More

                   Crossref 1
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

Abstract
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
Electrical and Optical Investigation of the Growth Behavior of Au Nanoparticles Fabricated on Various Matrix Materials by the Alternating Sputtering Method
교번스퍼터링법에 의해 다양한 기지상 재료위에 형성된 Au 나노입자의 성장거동에 대한 전기, 광학적 분석
Bum-Joon Kim, Hyun Chul Kim, Jong-Geon Park, Kyeong-Seok Lee
김범준, 김현철, 박종건, 이경석
Korean J. Met. Mater. 2017;55(10):739-744.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.739

Abstract
Nanocomposite films, which are comprised of metal nanoparticles dispersed in a matrix layer, have attracted great interest due to their unique electrical and optical properties, which are mainly due to the excitation of localized surface plasmons. In this study, we employed an alternating sputtering method to fabricate such nanocomposite films...... More

    
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