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Fabrication and Electrical Characterization of p/n PbSe Diodes
p/n PbSe 다이오드의 제조 및 전기적 특성 평가
Sukho Hwangbo, Jewon Lee
황보석호, 이제원
Korean J. Met. Mater. 2024;62(2):94-105.   Published online 2024 Jan 30
DOI: https://doi.org/10.3365/KJMM.2024.62.2.94

Abstract
Lead selenide (PbSe) diodes were fabricated using a magnetron sputtering process system with a pulsed DC power supply and a 2-inch PbSe target with a purity of 5N. For p-type PbSe thin films, the process variable was the oxygen ratio in the mixed gas of argon and oxygen. The electrical..... More

                
Ion Exchange for the Purification of Co(II) or Ni(II) from Acidic and Ammonia Solutions in the Recycling of Spent Lithium-Ion Batteries
Thanh Tuan Tran, Man Seung Lee
Korean J. Met. Mater. 2022;60(12):902-911.   Published online 2022 Nov 25
DOI: https://doi.org/10.3365/KJMM.2022.60.12.902

Abstract
The recycling of critical metals like cobalt and nickel from spent lithium-ion batteries (LIBs) is of immense importance in sustainable manufacturing. This work aims to purify Co(II) and Ni(II) present in acidic and ammonia solutions using ion exchange. AG-1-X8 resin modified with thiocyanate anions (R4N+SCN resin) was used to separate..... More

                   Web of Science 1  Crossref 1
Effect of Nickel Silicide Content on the Friction Properties of Wet Sintered Friction Material
습식 소결 마찰재의 마찰특성에 대한 니켈 실리사이드 함량의 영향
Tae-Hyung Park, Sang-Wook Kim, Jong-Kyun Kim, Soong-Keun Hyun
박태형, 김상욱, 김종균, 현승균
Korean J. Met. Mater. 2022;60(2):95-101.   Published online 2022 Jan 12
DOI: https://doi.org/10.3365/KJMM.2022.60.2.95

Abstract
The effect of nickel silicide on the friction properties of Cu-based wet sintered friction materials was investigated. The microstructure and mechanical properties of nickel silicide added Cu-based wet sintered friction materials were examined. Nickel silicide was prepared by mechanically alloying Ni and Si powder. Three types of Cu-based wet sintered..... More

                
Effect of Minor Alloying Elements (C, Ni, Cr, Mo) on the Long-Term Corrosion Behaviors of Ultrahigh-Strength Automotive Steel Sheet in Neutral Aqueous Environment
자동차용 초고강도급 강재 내 미량 첨가된 합금원소 (C, Ni, Cr 및 Mo)가 중성 수용액 환경 내 장기 부식거동에 미치는 영향
Hye Rin Bang, Jin-seong Park, Hwan Goo Seong, Sung Jin Kim
방혜린, 박진성, 성환구, 김성진
Korean J. Met. Mater. 2022;60(1):35-45.   Published online 2021 Dec 10
DOI: https://doi.org/10.3365/KJMM.2022.60.1.35

Abstract
This study examined the effects of minor alloying elements (C, Ni, Cr, and Mo) on the long-term corrosion behaviors of ultrahigh-strength automotive steel sheets with a tensile strength of more than 1800 MPa. A range of experimental and analytical results showed that the addition of Ni, Cr, and Mo decreased..... More

                   Web of Science 4  Crossref 3
Tellurium-Incorporated Nickel-Cobalt Layered Double Hydroxide and Its Oxygen Evolution Reaction
Jung-Il Lee, Hui Ra Chae, Jeong Ho Ryu
Korean J. Met. Mater. 2021;59(7):491-498.   Published online 2021 Jun 16
DOI: https://doi.org/10.3365/KJMM.2021.59.7.491

Abstract
Transition-metal-based layered double hydroxides (LDHs) have attracted substantial attention as highly efficient oxygen evolution reaction (OER) catalysts because they are earth-abundant, low-cost, and environmentally friendly materials with favorable adsorption/desorption energies for intermittent reactants. However, the application of these LDHs as high-performance electrocatalysts is often hindered by their relatively sluggish electronic..... More

                Supplementary       Web of Science 5  Crossref 6
Effect of Co-Solvent Percentages on the Exfoliation Rate of NiTe<sub>2</sub> Thin Film for Transparent Electrodes
혼합용매 비율이 투명전극 용 NiTe2 박막의 박리에 미치는 영향
Jun Ho Lee, Ho Jun Park, Chae Eun Im, Jong Gyeom Kim, Dong Eun Gu, Suk Jun Kim
이준호, 박호준, 임채은, 김종겸, 구동은, 김석준
Korean J. Met. Mater. 2021;59(7):481-490.   Published online 2021 Jun 16
DOI: https://doi.org/10.3365/KJMM.2021.59.7.481

Abstract
We attempted to maximize the transmittance of 2D NiTe2 thin film using the liquid-phase exfoliation (LPE) process to confirm the applicability of NiTe2 as a transparent electrode. The LPE process, using a co-solvent of organic solvent and water, is a stable and efficient method of increasing transmittance at low cost...... More

                   Web of Science 1  Crossref 1
Effect of Electrolyte Anion on Electrochemical Behavior of Nickel Hexacyanoferrate Electrode in Aqueous Sodium-Ion Batteries
수용액 기반 소듐 이온 배터리용 헥사사이아노철산 니켈의 전기화학 거동에 미치는 전해질내 음이온의 영향
Sungjun Park, Sang-Eun Chun
박성준, 전상은
Korean J. Met. Mater. 2020;58(12):896-906.   Published online 2020 Dec 4
DOI: https://doi.org/10.3365/KJMM.2020.58.12.896

Abstract
Nickel hexacyanoferrate (NiHCF) has a three-dimensional open framework structure, excellent long-cycling stability and rate performance as a cathode for aqueous sodium-ion batteries. However, the specific capacity of NiHCF is lower than that of present cathodes for aqueous batteries. A sodium-ion electrolyte was explored to achieve optimum capacity with NiHCF. Powder-type..... More

                   Web of Science 4  Crossref 3
Preparation of Electroformed Copper-Nickel Multi-Nano-Layers and Characterization of Their Electromagnetic Shielding Effectiveness
구리-니켈 다층 나노 도막 제조와 전자파 차폐 효과 평가
Yong Choi
최용
Korean J. Met. Mater. 2020;58(9):639-644.   Published online 2020 Aug 19
DOI: https://doi.org/10.3365/KJMM.2020.58.9.639

Abstract
Thin copper-nickel foil with multi-nano layers was prepared by pulse-electroforming to develop a high performance electromagnetic shielding material for electronic devices. The pulse electroforming conditions of the aqueous solution chemistry were selected based on the aqueous copper-nickel-sulfur phase diagram and an evaluation of the deposition rate using the finite element..... More

                   Web of Science 3  Crossref 1
Oxidation of Ni-Cr-Co-Al-Mo-Ti-Re-Ta-W-Ru Single Crystals at 1000 <sup>o</sup>C in Air
Ni-Cr-Co-Al-Mo-Ti-Re-Ta-W-Ru 단결정의 대기중 1000 oC에서의 산화
Junhee Hahn, Xiao Xiao, Dong Bok Lee
한준희, Xiao Xiao, 이동복
Korean J. Met. Mater. 2020;58(4):234-246.   Published online 2020 Mar 11
DOI: https://doi.org/10.3365/KJMM.2020.58.4.234

Abstract
Three kinds of Ni-based single crystals with the compositions of 63.8Ni-7.5Cr-5.1Co-4.8Al-1.9Mo- 0.9Ti-3Re-11.8Ta-1.2W, 61.4Ni-7.4Cr-5Co-4.8Al-1.8Mo-0.9Ti-3.1Re-11.6Ta-4W, and 60.9Ni-7.5Cr-5Co-4.8Al- 2Mo-1Ti-2.9Re-10.9Ta-1.2W-3.8Ru, in wt%, were cast in a Bridgman furnace. In the cast alloys, Cr, Co, Re, Mo, W, and Ru became microsegregated in dendrites consisting of γ-Ni, while Ni, Ta, and Al microsegregated in interdendrites..... More

                   Web of Science 6  Crossref 6
Effect of Ni and Cu Addition on Corrosion Behaviors of Pre-Oxidized Ultra-Strong Steel for Automotive Applications
Ni 및 Cu 첨가가 고온 산화된 자동차용 초고강도 강재의 부식 거동에 미치는 영향
Seung Min Ryu, Hwan Goo Seong, Jeong Kil Kim, Joong-Ki Hwang, Man Jae Lee, Min-Suk Oh, Sung Jin Kim
류승민, 성환구, 김정길, 황중기, 이만재, 오민석, 김성진
Korean J. Met. Mater. 2019;57(6):343-351.   Published online 2019 May 16
DOI: https://doi.org/10.3365/KJMM.2019.57.6.343

Abstract
The incomplete elimination of oxide scale formed during the normalizing process can result in severe degradation of the surface and mechanical properties of ultra-strong steels. This study revealed that the formation of oxide scale was highly dependent upon the alloying elements Ni and Cu. Ni-bearing steel showed a much higher..... More

                   Web of Science 3  Crossref 2
Properties of the Catalytic Nickel Silicides for a Dye-Sensitized Solar Cell
염료감응형 태양전지용 니켈실리사이드 촉매재료의 물성 연구
Taeyeul Park, Kwangbae Kim, Ohsung Song
박태열, 김광배, 송오성
Korean J. Met. Mater. 2017;55(6):440-445.   Published online 2017 Jun 1
DOI: https://doi.org/10.3365/KJMM.2017.55.6.440

Abstract
We have investigated the properties of nickel silicides as catalysts for dye-sensitized solar cells (DSSCs) by preparing several nickel silicide layers with a 100 nm-Ni/Si (100) structure using silicidation annealing for 30 minutes at 300 ℃ – 900 ℃. X-ray diffraction (XRD), four-point probe, field emission scanning electron microscope (FE-SEM),..... More

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