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  • Most-cited are based on citations from 2019 ~ 2021.

  • Extraction Behavior of Hydrogen Ion by an Ionic Liquid Mixture of Aliquat 336 and Cyanex 272 in Chloride Solution
    Minh Nhan Le, Seong Ho Son, Man Seung Lee
    Korean J. Met. Mater. 2019;57(3):162-169.   Published online 2019 Feb 8
    DOI: https://doi.org/10.3365/KJMM.2019.57.3.162

    During the extraction of metal ions from a weak acidic chloride solution by ionic liquids consisting of an organophosphorus extractant and Aliquat 336, the equilibrium pH is sometimes observed to be higher than the initial pH. To compare the hydrogen ion extraction behavior of tertiary and quaternary amines, Alamine 336,..... More

                               Cited By 6
    Optimization of ZnO/Ag/ZnO Transparent Conductive Electrodes Fabricated by Magnetron Sputtering
    스퍼터링법으로 증착된 ZnO/Ag/ZnO 투명전극의 성능 최적화 연구
    Woo Hyeon Jo, Dooho Choi
    조우현, 최두호
    Korean J. Met. Mater. 2019;57(2):91-96.   Published online 2019 Jan 11
    DOI: https://doi.org/10.3365/KJMM.2019.57.2.91

    The critical role of the thicknesses of the top and bottom oxide layers, as well as Ag layer, in ZnO/Ag/ZnO transparent conductive electrodes were investigated. The Ag forms a nearly continuous layer at the thickness of 8 nm, at which the Ag sheet resistance of 8.0 Ω/Sq. is lower than..... More

                               Cited By 5
    Anisotropy in Green Body Bending Strength due to Additive Direction in the Binder-Jetting Additive Manufacturing Process
    Ji-Won Oh, Sahn Nahm, Byoungmoon Kim, Hanshin Choi
    Korean J. Met. Mater. 2019;57(4):227-235.   Published online 2019 Apr 5
    DOI: https://doi.org/10.3365/KJMM.2019.57.4.227

    The additive manufacturing (AM) process is a production technology process that has recently attracted attention. Among AM processes, the binder jetting (BJ) method is advantageous because it allows both wide material selection and design freedom. However, the output arrangement, which determines the direction in which the binder is injected during..... More

                               Cited By 5
    Influence of the Thickness of TiO2/TiO2-x Layers on the Behavior of a Memristor Device
    TiO2/TiO2-x 박막층의 두께가 멤리스터 소자의 특성에 미치는 영향
    Han-Sang Kim, Sung-Jin Kim
    김한상, 김성진
    Korean J. Met. Mater. 2019;57(2):84-90.   Published online 2019 Feb 5
    DOI: https://doi.org/10.3365/KJMM.2019.57.2.84

    Memristors have been extensively investigated as the fourth fundamental circuit element. Titanium oxide is a common material used to fabricate memristors. In this paper, we investigated the influence of the thickness of the oxide active layer on the Al/TiO2-x/TiO2/heavily doped electrode memristor architecture. An insulating TiO2 thin-film was deposited using..... More

                               Cited By 4
    Effect of Pre-Aging Treatment on Bake-Hardenability of Al-8.0Zn-2.5Mg-2.0Cu Alloy Sheet Fabricated by Twin-Roll Casting Process
    박판주조공정으로 제조한 Al-8.0Zn-2.5Mg-2.0Cu 합금 판재의 소부경화특성에 미치는 예비시효의 영향
    Ji-Goo Heo, Yun-Soo Lee, Min-Seok Kim, Hyoung-Wook Kim, Yang-Do Kim
    허지구, 이윤수, 김민석, 김형욱, 김양도
    Korean J. Met. Mater. 2019;57(6):396-404.   Published online 2019 May 16
    DOI: https://doi.org/10.3365/KJMM.2019.57.6.396

    The effects of natural and pre-aging on the microstructure and mechanical properties of Al-8.0Zn-2.5Mg-2.0Cu aluminum alloy sheet fabricated by twin roll casting were investigated. Immediately after solution treatment, the Al-8.0Zn-2.5Mg-2.0Cu alloy sheet had a yield strength of 173 MPa and elongation of 19.5%. The hardness of the Al-8.0Zn-2.5Mg-2.0Cu alloy sheet..... More

                               Cited By 4
    Hydrogen-Induced Cracking of Laser Beam and Gas Metal Arc Welds on API X65 Steel
    Junghoon Lee, Myeonghyun Kim, Yeongdo Park, Cheolho Park, Cheolhee Kim, Namhyun Kang
    Korean J. Met. Mater. 2019;57(8):491-498.   Published online 2019 Jul 11
    DOI: https://doi.org/10.3365/KJMM.2019.57.8.491

    Hydrogen-induced cracking (HIC) behavior was analyzed for gas metal arc (GMA) and laser beam (LB) welds on American Petroleum Institute (API) X65 steel. The GMA welds consisted of acicular ferrite (AF) with some widmanstatten ferrite (WF), while the LB welds had bainitic ferrite (BF) with some AF. The welds and..... More

                               Cited By 4
    Recent Progress in First Principle Calculation and High-Throughput Screening of Electrocatalysts: A Review
    전기화학촉매의 제일원리 계산 및 하이스루풋 스크리닝 연구 동향: 리뷰
    Changsoo Lee, Kihoon Bang, Doosun Hong, Hyuck Mo Lee
    이창수, 방기훈, 홍두선, 이혁모
    Korean J. Met. Mater. 2019;57(1):1-9.   Published online 2018 Dec 14
    DOI: https://doi.org/10.3365/KJMM.2019.57.1.1

    There are many ongoing efforts to develop sustainable, clean, efficient, and economical pathways to produce renewable energy sources to satisfy worldwide energy demands. Electrochemical conversion processes, such as water splitting, CO2 conversion and N2 electroreduction, have been considered as successful approaches to solve these energy issues. Over the past decade,..... More

                               Cited By 3
    Effect of Prior Cold Working before Aging on the Precipitation Behavior in a Cu-3.5 wt% Ti Alloy
    Cu-3.5 wt% Ti 합금의 석출 거동에 미치는 시효 전 가공의 영향
    Minah Jo, Eun-Ae Choi, Jee Hyuk Ahn, Young Guk Son, Kwangho Kim, Jehyun Lee, Satoshi Semboshi, Seung Zeon Han
    조민아, 최은애, 안지혁, 손영국, 김광호, 이재현, 사토시 셈보시, 한승전
    Korean J. Met. Mater. 2019;57(1):10-17.   Published online 2018 Dec 14
    DOI: https://doi.org/10.3365/KJMM.2019.57.1.10

    Cu-Ti alloys were strengthened by Cu4Ti intermetallic compound precipitation in a Cu matrix during aging. The Cu-3.5 wt% Ti(Cu-4.6 at% Ti) alloys without deformation and with uniform and non-uniform deformation were aged at 450 oC for various times after solution treatment at 885 oC. The uniformly and non-uniformly deformed alloys..... More

                               Cited By 3
    Study of the Corrosion Behaviour, Liquid Metal Embrittlement and Resistance Spot Weldability of Galvannealed Hot Stamping Steel
    합금화 용융아연도금 핫스탬핑강의 자동차 차체 적용을 위한 부식 거동, 액상금속취화현상 및 점용접성 연구
    Yeonjung Hwang, Chang Wook Lee, Ga-Young Shin, Ji Hong Yoo, Minsu Choi
    황연정, 이창욱, 신가영, 유지홍, 최민수
    Korean J. Met. Mater. 2019;57(3):193-201.   Published online 2019 Feb 8
    DOI: https://doi.org/10.3365/KJMM.2019.57.3.193

    The hot stamping process is beneficial for fabricating high strength automotive parts without spring back. To suppress high temperature oxidation and decarburization, it is necessary to coat the hot stamping steel. In the present work, the performance of galvannealed coated (GA) hot stamped steel was evaluated. During cyclic corrosion tests,..... More

                               Cited By 3
    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

                               Cited By 3
    Characterization of Viscoelastic Behavior of Poly(dimethylsiloxane) by Nanoindentation
    Jong-hyoung Kim, Jinwoo Lee, Woojoo Kim, Jongheon Kim, Seung-Kyun Kang, Dongil Kwon
    Korean J. Met. Mater. 2019;57(5):289-294.   Published online 2019 May 5
    DOI: https://doi.org/10.3365/KJMM.2019.57.5.289

    In this study, we characterize the viscoelastic behavior of polymers using nanoindentation. We applied the indentation representative stress approach and elastic solution to the Maxwell model and determined that there was a linear relationship between the inverses of the initial unloading stiffness and indentation unloading rate. From nanoindentation tests with..... More

                               Cited By 3
    Effects of Molybdenum on HIC Susceptibility in Normalized Pressure Vessel Steels for Sour Service Applications
    Kijung Park, Dae Hyun Cho, Min-Ho Park, Cheol-Woong Yang
    Korean J. Met. Mater. 2019;57(7):405-411.   Published online 2019 Jun 5
    DOI: https://doi.org/10.3365/KJMM.2019.57.7.405

    This paper discusses a molybdenum-added alloy design for normalized pressure vessel steels, to reduce hydrogen induced cracking (HIC) and inhibit crack propagation. The change in microstructure produced by the modified alloy composition was analyzed to determine its effect on HIC characteristics. The microstructural change was observed by optical microscopy, hardness..... More

                               Cited By 3
    Eco-Friendly Pretreatment of Titanium Turning Scraps and Subsequent Preparation of Ferro-Titanium Ingots
    Jikwang Chae, Jung-Min Oh, Suhwan Yoo, Jae-Won Lim
    Korean J. Met. Mater. 2019;57(9):569-574.   Published online 2019 Aug 21
    DOI: https://doi.org/10.3365/KJMM.2019.57.9.569

    In this study, an eco-friendly pretreatment process was developed to recycle titanium turning scraps and ferro-titanium ingots with low gaseous impurities were prepared using recycled titanium turning scraps. The amount of gaseous impurities of titanium scraps before removing the machining oils on the surface was as high as 20000 ppm...... More

                               Cited By 3
    Up- and Downconversion Luminescence in Ho3+,Yb3+-Co-Doped Y2O3 Transparent Ceramics Prepared by Spark Plasma Sintering
    Cheol Woo Park, Jun Hyeong In, Jae Hwa Park, Kwang Bo Shim, Jeong Ho Ryu
    Korean J. Met. Mater. 2019;57(9):609-616.   Published online 2019 Aug 21
    DOI: https://doi.org/10.3365/KJMM.2019.57.9.609

    We employed spark plasma sintering (SPS) in the presence of sintering aids to fabricate high-quality Ho3+,Yb3+-co-doped Y2O3 transparent ceramics suitable for use as a laser gain medium, and analyzed their microstructure and optical properties. Ho3+,Yb3+-co-doped Y2O3 transparent ceramics with different contents of Yb3+ were fabricated by SPS and exhibited high..... More

                               Cited By 3
    Synthesis and Characterization of the Cu0.72Co2.28O4 Catalyst for Oxygen Evolution Reaction in an Anion Exchange Membrane Water Electrolyzer
    음이온 교환막 수전해에 사용되는 Cu0.72Co2.28O4 산소 발생 촉매의 합성 및 특성 분석
    Sung Min Park, Myeong Je Jang, Yoo Sei Park, Jooyoung Lee, Jae-yeop Jeong, Jaehoon Jung, Min-Kwan Choi, Yu-Seong Noh, Min-Ho Seo, Hyung Ju Kim, Juchan Yang, Yang Do Kim, Sung Mook Choi
    박성민, 장명제, 박유세, 이주영, 정재엽, 정재훈, 최민관, 노유성, 서민호, 김형주, 양주찬, 김양도, 최승목
    Korean J. Met. Mater. 2020;58(1):49-58.   Published online 2019 Dec 12
    DOI: https://doi.org/10.3365/KJMM.2020.58.1.49

    In this study, we investigated the morphological, crystal structural, electronic structural, and electrocatalytic properties of the inverse spinel structured copper cobalt oxide (Cu0.72Co2.28O4) catalysts. The materials were prepared by coprecipitation using various copper and cobalt precursors, and subsequent oxidation treatment. Electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Brunauer Emmett..... More

                               Cited By 3
    Corrosion Resistance and Adhesion of Paint Coating Film on Zn-Mg-Al Hot-Dip Galvanized Steel Sheets
    아연-마그네슘-알루미늄 합금도금강판의 도장 내식성 및 밀착성
    Jae-Won Lee, Bora Park, Sung Jin Kim
    이재원, 박보라, 김성진
    Korean J. Met. Mater. 2019;57(2):77-83.   Published online 2019 Jan 9
    DOI: https://doi.org/10.3365/KJMM.2019.57.2.77

    Zn-Al-Mg alloy galvanized steel sheets have excellent corrosion resistance and improved cut-edge corrosion resistance. Most of the galvanized steel sheets used for outdoor applications are coated again on the galvanizing layer, or after a plastic film is laminated. As the corrosion products formed by the corrosion of Zn accumulate over..... More

                               Cited By 2
    Estimation of Chemical Composition of Al-Si Cast Alloys Using Image Recognition
    화상인식을 이용한 Al-Si 주조용 합금의 화학조성 예측
    Sang-Jun Jeong, In-Kyu Hwang, In-Sung Cho, Hee-Soo Kim
    정상준, 황인규, 조인성, 김희수
    Korean J. Met. Mater. 2019;57(3):184-192.   Published online 2019 Feb 14
    DOI: https://doi.org/10.3365/KJMM.2019.57.3.184

    In this study, we analyzed the chemical composition of Al-Si cast alloys from microstructural images, using image recognition and machine learning. Binary Al-Si alloys of Si = 1~10 wt% were cast and prepared as reference images in the dataset used for machine learning. The machine learning procedure was constructed with..... More

                               Cited By 2
    Oxidation Behaviors of Alloys Containing β/B2 Phases of Ti-45Al-Mo-Nb Alloys and Evaluation of the Oxidation Behaviors of Si Pack Cementation Coated Alloys
    β/B2상을 포함한 Ti-Al-Mo-Nb 합금의 산화 거동과 실리콘 화합물 코팅을 통한 내산화성 개선
    Kwangsu Choi, Youngbuem Song, Seonghoon Yi, Joon Sik Park
    최광수, 송영범, 이승훈, 박준식
    Korean J. Met. Mater. 2019;57(3):131-137.   Published online 2019 Feb 8
    DOI: https://doi.org/10.3365/KJMM.2019.57.3.131

    Alloys containing the β/B2 phases of Ti-45Al-3Mo, Ti-45Al-3Mo-2Nb and Ti-45Al-5Mo were prepared using an vacuum arc-melting machine. Heat-treatments were carried out at 1250 oC in an Ar atmosphere. The temperature of 1250 oC is the temperature region of phase α + γ + (β/B2), and the heat treatment condition which..... More

                               Cited By 2
    Effect of Cr Electroplating Layer Thickness on the Tensile and High Cycle Fatigue Properties of AISI 1045 Steel
    AISI 1045 강의 인장 및 고주기 피로 특성에 미치는 Cr 도금층 두께의 영향
    Gi-Su Ham, Yeon-Ji Kang, Hyung-Jun Kim, Sang-Hoon Yoon, Kee-Ahn Lee
    함기수, 강연지, 김형준, 윤상훈, 이기안
    Korean J. Met. Mater. 2019;57(3):138-145.   Published online 2019 Feb 14
    DOI: https://doi.org/10.3365/KJMM.2019.57.3.138

    This study investigated and compared the tensile and high-cycle fatigue properties of AISI 1045 steel and Cr electroplated AISI 1045 steel. First, tensile and fatigue specimens were machined from AISI 1045 steel (substrate), and two kinds of Cr electroplating layers with different layer thickness were applied. The substrate, AISI 1045..... More

                               Cited By 2
    Improvement of Alumina Dissolution from the Mechanically Activated Dross Using Ultrasound-Assisted Leaching
    Thi Thuy Nhi Nguyen, Man Seung Lee
    Korean J. Met. Mater. 2019;57(3):154-161.   Published online 2019 Feb 14
    DOI: https://doi.org/10.3365/KJMM.2019.57.3.154

    Aluminum dross results from the re-melting of used aluminum cans, and is a valuable resource containing alumina. In general, aluminum dross contains oxides of Al, Ca, Fe, Mg, Si and Ti and some salts. As a continuation of the previous work to recover pure alumina from the dross, the effect..... More

                               Cited By 2
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