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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

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

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

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

                           Cited By 1
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

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

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

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

                           Cited By 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

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

         Cited By 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

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

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

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

Effect of Preparation Methods on the Electrochemical Performance of All-solid-state Li-S Batteries
탄소-황 복합 전극 제조 방법에 따른 리튬-황 전고체 전지 성능 변화
Han Ul Choi, Ju Sung Jin, Hyung-Tae Lim
최한울, 진주성, 임형태
Korean J. Met. Mater. 2017;55(7):503-508.   Published online 2017 Jul 4
DOI: https://doi.org/10.3365/KJMM.2017.55.7.503

All-solid-state Li-S batteries were fabricated with lithium silicide anodes (Li4.4Si), sulfide-based glass electrolyte (Li2S-P2S5), and a sulfur composite cathode. The sulfur based composite cathode was prepared using two methods; (Case 1) mortar-mixing and (Case 2) planetary ball milling at a rotation speed of 370 rev/min for 15 min. SEM analysis..... More

         Cited By 1
Fabrication and Characterization of Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> Nanowire Arrays and PEDOT: PSS Hybrid Thermoelectric Composites
Ge2Sb2Te5 nanowire arrays와 PEDOT: PSS를 이용한 유・무기 열전 복합소재 합성 및 특성평가
Sang-Hyun Roh, Jiwon Kim, Woon-Ik Park, Yang-Do Kim, Jae-Hong Lim
노상현, 김지원, 박운익, 김양도, 임재홍
Korean J. Met. Mater. 2017;55(6):432-439.   Published online 2017 Jun 1
DOI: https://doi.org/10.3365/KJMM.2017.55.6.432

Hybrid organic/inorganic composites have recently been investigated in the thermoelectric field in an effort to interdependently manipulate the charge carriers, which are interconnected with electrical and thermal transport. The decoupling of a charge carrier’s roles in the hybrid structures can result in enhanced thermoelectric performance, by only exploiting the high..... More

Effect of Graphene Addition on Mechanical Properties of TiN
그래핀 첨가가 TiN 기계적 성질에 미치는 영향
In-Jin Shon, Jin-Kook Yoon, Kyung-Tae Hong
손인진, 윤진국, 홍경태
Korean J. Met. Mater. 2017;55(3):179-183.   Published online 2017 Mar 3
DOI: https://doi.org/10.3365/KJMM.2017.55.3.179

Despite of many attractive properties of TiN, the current concern about the TiN focuses on its low fracture toughness below the ductile-brittle transition temperature. To improve its mechanical properties, the approach generally utilized has been the addition of a second phase to form composites and to make nanostructured materials. In..... More

Temperature Dependency of the Tensile Characteristics and Transition of Fracture Behaviors in a Novel Infiltrated TiC-SKD11 Composites
TiC-SKD11 함침 복합재의 온도에 따른 인장 특성과 파괴거동 변화
Nu-Ri Oh, Sang-Kwan Lee, Seung-Chan Cho, Il-Guk Jo, Keum-Cheol Hwang, Dae-Ha Kim, Young-Tae Cho, Dong-Woo Suh, Hyun-Uk Hong
오누리, 이상관, 조승찬, 조일국, 황금철, 김대하, 조영태, 서동우, 홍현욱
Korean J. Met. Mater. 2017;55(3):156-164.   Published online 2017 Mar 3
DOI: https://doi.org/10.3365/KJMM.2017.55.3.156

A composite having 60 vol% of TiC particles was successfully fabricated by the infiltration of molten SKD11 tool steel into a TiC preform. The density of this composite was achieved to be 25% lighter than conventional steels. The penetration of the liquid metal reached geometrically complex regions without any interfacial..... More

Effect of Graphene Addition on the Mechanical Properties of TiO<sub>2</sub>
TiO2 기계적 성질에 미치는 그래핀 첨가 영향
In-Jin Shon
Korean J. Met. Mater. 2017;55(2):110-114.   Published online 2017 Feb 2
DOI: https://doi.org/10.3365/KJMM.2017.55.2.110

Despite of the many attractive properties of TiO2, its low fracture toughness limits many industrial applications. To improve its fracture toughness, the approach commonly utilized has been the addition of a second phase, to form composites, and to make nanostructured composites. In this regard, highly dense nanostructured TiO2 and TiO2-graphene..... More

         Cited By 2
Effect of Added Gas-Atomized Al-Si/SiC<sub>p</sub> Composite Powder on the Sinterability and Mechanical Properties of Alumix 431 fabricated by Hot-Pressing Process
Eunsun Lee, Jeong-Jung Oak, Yongjin Kim, Yongho Park
Korean J. Met. Mater. 2017;55(2):98-109.   Published online 2017 Feb 2
DOI: https://doi.org/10.3365/KJMM.2017.55.2.98

The aim of this study is to establish an optimized hot-press sintering condition for aluminum matrix composites (AMCs) by analyzing their sintered microstructure and mechanical properties. The fabricated AMCs in this study consisted of a blend of commercial Ecka Alumix 431 powder, and Al-Si/SiCp powder manufactured by gas atomizer (Al-Si/SiCp)...... More

in situ Fabrication of Fe-TiB<sub>2</sub> Nanocomposite Powder by Planetary Ball Milling and Subsequent Heat-treatment of FeB and TiH<sub>2</sub> Powder Mixture
FeB와 TiH2 혼합분말의 유성볼밀 및 후속열처리에 의한 Fe-TiB2 나노복합분말 in situ 제조
Xuan-Khoa Huynh, Sun-Woo Bae, Ji Soon Kim
Xuan-Khoa Huynh, 배선우, 김지순
Korean J. Met. Mater. 2017;55(1):10-15.   Published online 2017 Jan 5
DOI: https://doi.org/10.3365/KJMM.2017.55.1.10

Fe-TiB2 powder was synthesized in-situ by the planetary ball milling and subsequent heat-treatment of an iron boride (FeB) and titanium hydride (TiH2) powder mixture. Mechanical activation of the (FeB+TiH2) powder mixtures was observed after a milling time of 3 hours at 700 rpm of rotation speed, but activation was not..... More

         Cited By 1
Rapid Sintering of Nanocrystalline SiC-Graphene Composites
나노구조 SiC-Graphene 복합재료 급속소결
In-Jin Shon
Korean J. Met. Mater. 2016;54(12):893-898.   Published online 2016 Dec 5
DOI: https://doi.org/10.3365/KJMM.2016.54.12.893

The low mechanical properties of SiC limit its wide application despite many attractive properties. To improve the mechanical properties, a second phase has been generally added to make a nanostructured composite. In this respect, graphene was evaluated as the reinforcing agent of SiC. SiC-graphene composites were sintered within 2 min..... More

         Cited By 2
Synthesis and Rapid Sintering of Nanocrystalline CoTi-ZrO<sub>2</sub> Composite
나노구조 CoTi-ZrO2 복합재료 합성과 급속소결
In-Jin Shon
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

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

         Cited By 3
The Effects of Cooling Rate on the Microstructure and Mechanical Properties of Ti<sub>40</sub>Zr<sub>10</sub>Cu<sub>36</sub>Pd<sub>14</sub> Metallic Glass Matrix Composites
Ti40Zr10Cu36Pd14 비정질기지 복합재의 미세조직과 기계적 특성에 미치는 냉각속도의 영향
Seon Yong Park, Ka Ram Lim, Young Sang Na, Seong Eon Kim, Youn Suk Choi
박선용, 임가람, 나영상, 김승언, 최윤석
Korean J. Met. Mater. 2016;54(11):802-807.   Published online 2016 Nov 5
DOI: https://doi.org/10.3365/KJMM.2016.54.11.802

In this paper, we demonstrate that the microstructure and mechanical properties in the Ti40Zr10Cu36Pd14 alloy can be tailored by controlling the cooling rate during solidification. A lower cooling rate increases the volume fraction of crystalline phase such as B2 but decreases the free volume of the glassy matrix. The increase..... More

Composite Materials
Effect of Added Ni on the Deposition State of Kinetic Sprayed Al-Ni Composite
첨가된 Ni이 저온 분사된 Al-Ni 복합체의 적층 상태에 미치는 영향
Jaeick Kim, Seungtae Lee, Changhee Lee
김재익, 이승태, 이창희
Korean J. Met. Mater. 2016;54(9):688-697.   Published online 2016 Sep 5
DOI: https://doi.org/10.3365/KJMM.2016.54.9.688
The liners of shaped charges, a type of weapon, should possess good penetration ability and explosive power. Conventionally this is achieved by fabricating reactive Al-Ni composite layers on the Cu liners, which by themselves have fine penetration ability but poor explosive power. However, there are no studies related to the... More
Powder Metallurgy
Fabrication and Mechanical Properties of Nanostructured TiC-TiAl by the Pulsed Current Activated Sintering
펄스전류 활성 소결에 의한 나노구조 TiC-TiAl 제조 및 기계적 성질
Bong-Won Kwak, Byung-Su Kim, Jin-Kook Yoon, Kyung-Tae Hong, In-Jin Shon
곽봉원, 김병수, 윤진국, 홍경태, 손인진
Korean J. Met. Mater. 2016;54(8):566-572.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.566

TiC-Co or TiC-Ni hard materials have been used for cutting tools. However, the high cost and the low hardness of Ni or Co, and the low corrosion resistance of the TiC-Ni and TiC-Co cermets have generated interest in recent years in using them as alternative binder phases. In this study,..... More

         Cited By 3
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