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Korean J. Met. Mater.
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고전류밀도에서의 탄산칼륨 첨가제의 전해동박 특성에 미치는 영향
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우태규, 박일송
Korean J. Met. Mater.
2023;61(5):347-354. Published online 2023 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2023.61.5.347
Abstract
The amount and kind of additives in electrolytes play a very important role on the electroplating of Cu foil, which is used as a cathode materials for secondary batteries. As the use of Cu foil increased, various studies on the electroplated Cu foil are urgently needed. We studied surface characteristics.....
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방열판용 구리 후막의 잔류응력 제어를 위한 그래핀 효과에 관한 연구
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배정운
Korean J. Met. Mater.
2023;61(1):28-32. Published online 2022 Dec 28
DOI:
https://doi.org/10.3365/KJMM.2023.61.1.28
Abstract
Nowadays, high-density electronic devices and component mounting have gained popularity. Because of the heat generated from these devices, efficiency of the electronic parts is significantly lowered and life time of these devices is considerably shortened. Therefore, it is very important to efficiently dissipate the heat generated from the device to.....
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Korean J. Met. Mater.
2022;60(10):751-759. Published online 2022 Sep 29
DOI:
https://doi.org/10.3365/KJMM.2022.60.10.751
Abstract
The smelting reduction of spent LIBs produces metallic alloys containing Co, Cu, Fe, Mn, and Ni. These metallic alloys can be completely dissolved by 2 M HCl solution containing H
2
O
2
as an oxidizing agent. Extraction of the leaching solution with D2EHPA results in a Fe(III) free raffinate. In this work,.....
More
Web of Science 3
Crossref 2
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Cu 박막의 두께 변화에 따른 면상발열체 특성 연구
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최두호
Korean J. Met. Mater.
2022;60(7):511-516. Published online 2022 Jun 3
DOI:
https://doi.org/10.3365/KJMM.2022.60.7.511
Abstract
In this study, ultrathin (4-40 nm) Cu-layer-based transparent heaters prepared on glass substrates were investigated for cost-effective applications. The Cu heaters were embedded between ZnO layers serving as anti-reflection and anti-corrosion layers. The Cu layer thicknesses varied in the range of 4-40 nm, and the corresponding structural, electrical, optical and.....
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JGB 첨가제에 의한 동박의 미세구조변화와 전기적 특성
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우태규, 박일송
Korean J. Met. Mater.
2021;59(6):404-411. Published online 2021 May 26
DOI:
https://doi.org/10.3365/KJMM.2021.59.6.404
Abstract
Extremely thin film high quality copper foil is required to ensure high performance in electronics and slimness in secondary batteries. During the electroplating of copper foil, Janus Green B(JGB) and Collagen were introduced as additives to the electrolytes to study their effects. The structural and electrical properties of the electroplated.....
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Web of Science 2
Crossref 3
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고전류밀도에서의 첨가제 초기 거동 및 동박의 기계적 특성
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우태규, 박종재, 박일송
Korean J. Met. Mater.
2021;59(5):304-313. Published online 2021 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.5.304
Abstract
In this study, we studied the surface and mechanical properties of multiple additives as well as the initial plating properties of individual additives. With the individual additive groups, copper crystals tended to converge at a stage above the critical amount of additive. When chloride ions were added, large crystals formed.....
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Web of Science 2
Crossref 2
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Korean J. Met. Mater.
;59(2):135-141. Published online 2021 Jan 27
DOI:
https://doi.org/10.3365/KJMM.2021.59.2.135
Abstract
The formation of porous material structures has been widely investigated for the development of high-performance energy materials, catalysts, and chemical sensing devices. Various nanoporous structure fabrication methods are based on wet-chemical processes, which require precise control of the process parameters. Physical vapor deposition such as thermal evaporation utilizes high vacuum.....
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Web of Science 3
Crossref 3
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Top submerged lance 로의 스파이스산물 중 구리의 황산 침출에 대한 납과 안티몬의 영향
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채수진, 유경근, Richard Diaz Alorro, Manis Kumar Jha
Korean J. Met. Mater.
2021;59(1):33-40. Published online 2021 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2021.59.1.33
Abstract
Cu-Pb and Cu-Sb alloys were prepared at various ratios, from 10:90 to 90:10, and leaching tests with sulfuric acid were conducted to investigate the effect of Pb and Sb on the leaching of Cu from speiss, which is obtained from the top submerged lance furnace process. The Cu leaching.....
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구리-니켈 다층 나노 도막 제조와 전자파 차폐 효과 평가
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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
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Korean J. Met. Mater.
2020;58(8):560-565. Published online 2020 Jul 27
DOI:
https://doi.org/10.3365/KJMM.2020.58.8.560
Abstract
This study investigated the influence of laser shock peening without coating (LSPw/oC) on the degradation of copper electrical contacts. A theoretical calculation of the plastic-affected depth (PAD) induced by LSPw/oC was performed, based on the laser-induced plasma pressure along with the Hugoniot elastic limit of our LSPw/oC experimental conditions. The.....
More
Web of Science 4
Crossref 3
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음이온 교환막 수전해에 사용되는 Cu
0.72
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O
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산소 발생 촉매의 합성 및 특성 분석
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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
Abstract
In this study, we investigated the morphological, crystal structural, electronic structural, and electrocatalytic properties of the inverse spinel structured copper cobalt oxide (Cu
0.72
Co
2.28
O
4
) 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
Web of Science 11
Crossref 12
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고전류밀도에서 유기첨가제에 의한 구리 전착층의 전기적 특성 변화
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우태규, 박일송
Korean J. Met. Mater.
2020;58(1):41-48. Published online 2019 Dec 12
DOI:
https://doi.org/10.3365/KJMM.2020.58.1.41
Abstract
Electroplating has many economic advantages in producing copper foils. The easiest way to manufacture electroplated copper foil with various properties is to add appropriate additives. This study evaluated the surface properties, mechanical and electrical properties of copper foil electroplated in electrolytes containing the leveler JGB (Janus Green B). When the.....
More
Web of Science 8
Crossref 6
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마그네트론 스퍼터링법으로 제조된 ZnO/Cu/ZnO 유연 투명전극 성능 최적화 연구
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김대균, 이태형, 최두호
Korean J. Met. Mater.
2019;57(12):795-800. Published online 2019 Nov 22
DOI:
https://doi.org/10.3365/KJMM.2019.57.12.795
Abstract
With the expanding development of flexible optoelectronic devices, the need for high-performance (i.e., high conductivity, high transmittance and flexibility) transparent conductive electrodes has grown. In this study, the critical role of thickness for each of the layers in ZnO/Cu/ZnO transparent conductive electrodes (TCE) for optoelectronic devices has been investigated. The.....
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Crossref 7
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폐리튬 이차전지 황산침출용액에서 Cyanex 301에 의한 구리(II)의 선택적 추출
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이세아, 이만승
Korean J. Met. Mater.
2019;57(9):596-602. Published online 2019 Aug 21
DOI:
https://doi.org/10.3365/KJMM.2019.57.9.596
Abstract
Spent lithium ion batteries contain cobalt, copper, lithium, manganese and nickel. Recovery of these metals with high purity from spent lithium ion batteries is of importance. A sulfuric acid solution is generally employed for the treatment of spent lithium ion batteries, but it is difficult to separate these metal ions.....
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Web of Science 7
Crossref 8
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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,.....
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Web of Science 4
Crossref 6
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Ni 및 Cu 첨가가 고온 산화된 자동차용 초고강도 강재의 부식 거동에 미치는 영향
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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.....
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Web of Science 3
Crossref 2
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광전 손실과 핀홀 생성의 억제를 통한 유연 투명 TiO
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/Cu/ZnO 전극의 최적화 연구
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정은욱, 이건환, 조영래, 윤정흠
Korean J. Met. Mater.
2019;57(5):316-323. Published online 2019 Apr 10
DOI:
https://doi.org/10.3365/KJMM.2019.57.5.316
Abstract
We demonstrated an effective method for fabricating a highly efficient flexible transparent electrode in an oxide/metal/oxide configuration based on an ultrathin Cu film. It exhibited low losses in optical transmittance and electrical conductivity while minimizing current loss due to pinhole-related leakages. The Cu film was developed on a chemically heterogeneous.....
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Web of Science 3
Crossref 2
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저융점합금 라인을 이용한 플렉시블 OLED 봉지
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배건, 문철희
Korean J. Met. Mater.
2019;57(4):251-257. Published online 2019 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.4.251
Abstract
We have developed an encapsulation technology for OLED devices using an LMPA sealing line to enhance barrier characteristics against moisture and oxygen penetration. To verify the potential of this technology for flexible OLED devices, three experimental factors were investigated in this study. First, the stability of the sealing line on.....
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고순도 구리 선재의 어닐링 후 불균질 미세조직과 집합조직에 미치는 신선 시 전단 변형의 영향
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박현, 김상혁, 김세종, 이효종
Korean J. Met. Mater.
2018;56(12):861-869. Published online 2018 Dec 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.12.861
Abstract
To determine the origin of the inhomogeneous microstructure and texture observed in drawn and annealed high purity copper wires, two kinds of drawing process conditions and their influence was investigated. The regular condition, based on a symmetric die, and a condition designed intentionally to produce an inhomogeneous shear deformation using.....
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Crossref 4
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Korean J. Met. Mater.
2018;56(3):235-243. Published online 2018 Mar 6
DOI:
https://doi.org/10.3365/KJMM.2018.56.3.235
Abstract
The optimal design of electrical initiation devices for explosive charges and other high energy materials critically depends on the bridge burst or the electrical explosion of the thin-film metallic bridges. It is therefore quite important to select the right material with suitable explosion properties for the metallic bridge film. However,.....
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Crossref 1
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Korean J. Met. Mater.
2017;55(11):760-767. Published online 2017 Oct 31
DOI:
https://doi.org/10.3365/KJMM.2017.55.11.760
Abstract
The material characterization of single crystalline Cu columns was numerically carried out at the submicroscopic level. A molecular dynamics (MD) simulation was employed using the embedded-atom method (EAM) interatomic potential between a pair of Cu atoms to describe the interactions among Cu atoms. First, the relationship between mechanical properties and.....
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Crossref 1
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Korean J. Met. Mater.
2017;55(9):637-644. Published online 2017 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2017.55.9.637
Abstract
In the photovoltaic industries, the main technique of metallization is screen printing with silver pastes, due to its simple and quick process. However, the high price of silver paste is one of the barriers to the producing of low cost solar cells. Consequently, a primary target in photovoltaic research is.....
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Crossref 3
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Korean J. Met. Mater.
2016;54(11):831-837. Published online 2016 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.11.831
Abstract
Herein, we report the results of our investigation on the effect of friction and anvil design on the heterogeneous plastic-deformation characteristics of copper during the compressive stage of high-pressure torsion (HPT), using the finite element method. The results indicate that the friction and anvil geometry play important roles in the.....
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Crossref 3
Electronic Materials
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전해 동박의 표면 형상 및 기계적 물성에 미치는 SPS 첨가제 영향
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우태규
Korean J. Met. Mater.
2016;54(9):681-687. Published online 2016 Sep 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.9.681
Abstract
In this study the effects of Bis(3-Sulfo-Propyl)di-Sulfide (SPS) on the elongation, surface morphology and crystal structure of electrolytic copper foil were investigated. Additives HEC (hydroxyethyl cellulose) (A), SPS(B), Coll-A(C) were used in the study, and the additive used as D was a Cl- ion. The study results show that there.....
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Crossref 5
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