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Powder Bed Fusion(PBF)으로 제조된 AlSi10Mg 합금을 위한 전해연마 공정
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박세림, 조현빈, 박운익, 이정훈
Korean J. Met. Mater.
2025;63(4):251-263. Published online 2025 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2025.63.4.251
Abstract
The irregular and highly rough surface of AlSi10Mg alloy parts fabricated by metal additive manufacturing technology can result in dimensional instability, poor surface quality and fluid turbulence. Therefore, post-treatments are needed to adjust the surface roughness and irregular surface morphology to satisfy industrial requirements. One of the most promising candidates.....
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벌크 비정질 Ti
47
Cu
38
Zr
7.5
Fe
2.5
Sn
2
Si
1
Ag
2
소재를 이용한 수술용 스칼펠(Scalpel) 제작의 최적화 조건분석
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박지니, 오정석, 이상엽, 정중희, 신동균, 박준식
Korean J. Met. Mater.
2025;63(2):95-101. Published online 2025 Feb 5
DOI:
https://doi.org/10.3365/KJMM.2025.63.2.95
Abstract
This study investigated the manufacturing conditions and properties of Ti
47
Cu
38
Zr
7.5
Fe
2.5
Sn
2
Si
1
Ag
2
amorphous bulk metallic glass (BMG) to examine its applicability for scalpels for medical use. Ti-base BMG alloys have excellent mechanical properties and biocompatibility, making them a suitable scalpel material. In this study, a vacuum suction casting method was used to.....
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n형 Mg
3
Sb
2-x
Bi
x
열전소재의 오믹접합층 형성을 위한 고상접합기술
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주성재, 장정인, 손지희, 박종호, 김봉서, 민복기
Korean J. Met. Mater.
2025;63(1):60-67. Published online 2025 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2025.63.1.60
Abstract
N-type Mg
3
Sb
2-x
Bi
x
materials are expected to replace n-type bismuth telluride because they are more abundant in the Earth's crust and lower in cost. However, the metallization process of this material, which is essential to develop modules, has been relatively under-researched. According to the literature, one-step sintering process based on powder.....
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직접용융증착 중 스캔 전략에 따른 18Ni300 마레이징강의 미세조직 및 기계적 특성
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주수빈, 노건우, 정영훈, 백민재, 이동준, 김정기
Korean J. Met. Mater.
2025;63(1):1-10. Published online 2025 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2025.63.1.1
Abstract
Although the laser scan strategy does not affect the energy density of laser-based additive manufacturing, changes in laser scan direction critically influence the residual stress and microstructure of metallic components. However, only a limited number of studies have investigated the role of laser scan strategy on the microstructure and mechanical.....
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Ni 825/A516-70N 클래드 판재의 용접 방법의 차이에 의한 기계적 특성 평가 및 예측
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황철홍, 오정석, 박지니, 조명우, 김선환, 유경훈, 김성웅, 김영주, 이상엽, 박준식
Korean J. Met. Mater.
2024;62(11):844-856. Published online 2024 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.11.844
Abstract
In this study, the microstructures and mechanical properties of different methods of FCAW (Flux-cored arc welding) + FCAW or FCAW + GTAW (Gas tungsten arc welding) welding on Ni825/A516-70N clad plate were investigated, using a double U groove angle on a laboratory scale. The amount of specimen deformation with FCAW.....
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Korean J. Met. Mater.
2024;62(11):837-843. Published online 2024 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.11.837
Abstract
Ti6Al4V is one of the most widely used Ti alloys in biomedical applications, such as orthopedic and dental implants, due to its excellent mechanical properties, biocompatibility, and high corrosion resistance. Metal implants require high bonding strength between the implant and bone for long-term use in the human body; Hydroxyapatite (HAp).....
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금속 용탕 탈성분법 공정에서 Mg 용탕에 첨가된 Al 합금원소가 Mg-Ti 복합재료의 미세조직에 미치는 영향
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장지은, 주수현, 박성혁
Korean J. Met. Mater.
2024;62(10):820-826. Published online 2024 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.10.820
Abstract
This study investigates the effect of adding Al to Mg molten metal on the microstructural characteristics and hardness of Mg-Ti composites fabricated via a liquid metal dealloying (LMD) process. The addition of Al to the Mg melt significantly reduces the dealloying rate of Cu in a Ti
30
Cu
70
precursor during LMD......
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배터리 소재 구리-알루미늄의 그린 레이저 용접성에 관한 연구
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유현종, 김명진, 강희신
Korean J. Met. Mater.
2024;62(10):757-765. Published online 2024 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.10.757
Abstract
Copper is widely utilized in electric vehicle batteries due to its excellent electrical conductivity, lightweight, and excellent corrosion resistance. However, copper has a high reflectivity of about 97% for infrared lasers, which makes it difficult to achieve stable welding quality. This study investigated using a green laser to weld nickel-coated.....
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고압비틀림 공정을 이용한 3차원 연속연결 Fe
80
Cr
20
-Mg 초미세립 헤테로구조 제작과 샘플 두께 영향 연구
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하수빈, 구강희, 김형섭, 주수현
Korean J. Met. Mater.
2024;62(9):673-684. Published online 2024 Sep 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.9.673
Abstract
This study investigates the refinement of 3D interconnected Fe
80
Cr
20
-Mg heterostructure composite material fabricated via Liquid Metal Dealloying (LMD) followed by High-Pressure Torsion (HPT) process. The LMD process was executed using two distinct thicknesses of the (Fe
80
Cr
20
)
70
Ni
30
precursor alloy, specifically 0.8 mm and 1.5 mm, which were immersed in an 800.....
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방전 플라즈마 소결과 압축 성형 방법으로 제조된 알루미늄 다공체의 구조적, 기계적 특성 연구
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최승혁, 이상화, 정재길, 이석재, 안태영, 최유송, 손승배
Korean J. Met. Mater.
2024;62(7):533-541. Published online 2024 Jun 28
DOI:
https://doi.org/10.3365/KJMM.2024.62.7.533
Abstract
Metal foam materials are used for various purposes including electrode materials, catalyst filters, and gas diffusion filters due to their porous structure. Increasing demand for metal foams has generated research to increase porosity as well as produce different pore sizes. The present paper illustrates a comparison of open-cell aluminum foams...
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선택적 레이저 용융 Ti6Al4V-Equine Bone 나노 복합재료의 마찰 및 마모 특성
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김세희, 배수현, 박상배, 선우훈, 신세은
Korean J. Met. Mater.
2024;62(5):351-359. Published online 2024 May 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.5.351
Abstract
Ti6Al4V is commonly used in implants because of its excellent mechanical properties, corrosion resistance, and biocompatibility. While Hydroxyapatite (HAp) is typically used for strong biological bonding between Ti6Al4V implants and bone tissue, this study takes a different approach by incorporating Equine Bone (EB), which has a chemical structure similar to.....
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Web of Science 3
Crossref 3
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방열 모듈 적용을 위한 Cu/Sn-3.0Ag-0.5Cu/Al 접합부의 계면 반응 및 접합강도에 미치는 후속 열처리 영향 분석
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정동익, 김가희, 김도헌, 오민철, 김건홍, 박영배
Korean J. Met. Mater.
2024;62(4):312-322. Published online 2024 Mar 28
DOI:
https://doi.org/10.3365/KJMM.2024.62.4.312
Abstract
The effects of post-annealing times at 150°C on the bonding strength and interfacial characteristics of Cu/Sn-3.0Ag-0.5Cu (SAC305)/Al were systematically evaluated. In the as-bonded sample, Cu
6
Sn
5
intermetallic compound (IMC) was formed at the upper Cu/SAC305 interface, while Ag
3
Al IMC was formed at the lower SAC305/Al interface, and a black layer of.....
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Web of Science 1
Crossref 1
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폐리튬배터리(LIBs)에서 유가금속(Ni, Co, Mn, Li) 회수 시 발생하는 황산나트륨의 처리 및 회수 연구
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조연철, 서민혁, 이영재, 안재우
Korean J. Met. Mater.
2024;62(4):275-283. Published online 2024 Mar 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.4.275
Abstract
Concerns have arisen regarding the high concentrations of sodium sulfate in wastewater resulting from the waste Li-ion battery wet recycling process. In addressing this issue, Bipolar electrodialysis was employed to desalinate high-concentration sodium sulfate and recover it as sulfuric acid and sodium hydroxide. The investigation encompassed various experimental variables, such.....
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Crossref 1
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반데르발스 소재 기반의 태양전지 적용에 관한 최신 연구동향 리뷰
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박형기, 이재현, 허근
Korean J. Met. Mater.
2024;62(2):154-161. Published online 2024 Jan 30
DOI:
https://doi.org/10.3365/KJMM.2024.62.2.154
Abstract
In recent years, the exploration of van der Waals materials has taken center stage in the field of advanced materials research. Studies have delved deeply into the multifaceted characteristics of these materials, and in particular their potential applications in solar cell technology. Van der Waals materials, named after the unique.....
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금속산화물 나노구조체를 이용한 화학저항식 가스센서의 최신 연구동향
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고재권, 박인혁, 심영석, 홍구택, 권기창
Korean J. Met. Mater.
2024;62(2):142-153. Published online 2024 Jan 30
DOI:
https://doi.org/10.3365/KJMM.2024.62.2.142
Abstract
In the modern era, advanced industrial and process technologies in various fields are known to produce harmful gases. These gases typically leak at low concentrations, but continuous exposure can cause serious harm to health and safety. Since human sensory organs cannot detect these risks or leaking hazardous gases, there has.....
More
Web of Science 1
Crossref 2
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Ni-Fe bimetallic oxides 촉매의 CO, NO 가스상 오염물질 동시저감 특성
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김운기, 정재일, 이명진, 정보라, 예보라, 이희수, 김홍대
Korean J. Met. Mater.
2024;62(2):115-124. Published online 2024 Jan 30
DOI:
https://doi.org/10.3365/KJMM.2024.62.2.115
Abstract
Many studies have been conducted on methods to remove air pollutants. Among them, a representative commercial technology for reducing nitrogen oxides (NO
X
) is selective catalytic reduction (SCR) using NH
3
as a reductant. However, the NH
3
-SCR technology has problems, such as the need for additional NH
3
gas (Active-SCR), the fact that.....
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파워 소자의 고속 다이 접합을 위한 5 um Cu@Sn 입자 기반 프리폼의 천이액상 소결접합 특성
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한병조, 조상호, 전강록, 이종현
Korean J. Met. Mater.
2024;62(1):12-21. Published online 2023 Dec 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.1.12
Abstract
To ensure the high-temperature stability of a bondline under next-generation power devices such as SiC semiconductors, a die bonding test was performed by transient liquid-phase (TLP) sinter-bonding using a Sn-coated Cu (Cu@Sn) particle-based preform. Compared to the existing 20 min-bonding result using a 30 μm Cu@Sn particle-based preform, a 5.....
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Sputtering공정 적용 Ag-Ti 조성경사형 박막의 구조분석
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전용민, 유시홍, 김민준, 이성의
Korean J. Met. Mater.
2023;61(12):909-914. Published online 2023 Nov 30
DOI:
https://doi.org/10.3365/KJMM.2023.61.12.909
Abstract
In this study, a composition-gradient thin film was applied for the formation of intermediate layer of Ti seed layer for an stable electrode stack Ag metal layer. Various composition of Ag-Ti hetero metal layer were simultaneously deposited by using the sputtering process with Ti and Ag target, respectively. An intermediate.....
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가솔린 터보차저용 Alloy1.4957 내열강의 석출 상 분석
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이종관, 이병주, 이언식
Korean J. Met. Mater.
2023;61(10):721-728. Published online 2023 Sep 25
DOI:
https://doi.org/10.3365/KJMM.2023.61.10.721
Abstract
Recently, strengthened environmental regulations have required the downsizing of gasoline engines, and as a result, demand for gasoline turbochargers has rapidly increased. The vane of a turbocharger controls the flow of gases toward the turbine, and it is manufactured by powder metallurgy due to its complex shape. Gasoline engines have.....
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코어-쉘 입자를 사용한 금속 접합부 형성의 최근 연구 동향과 입자 종류에 따른 접합 특성 리뷰
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한병조, 김영중, 이종현
Korean J. Met. Mater.
2023;61(9):679-693. Published online 2023 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2023.61.9.679
Abstract
With the increasing numbers of electric vehicles and the prevalence of high heat generating devices, recent studies have attempted to address the limitations of conventional solder materials, including their low durability at temperatures exceeding 200 ℃, insufficient mechanical properties in a joint, and low thermal conductivity. Transient liquid-phase (TLP) partial.....
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Web of Science 4
Crossref 4
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Fe계 합금 용가재가 적용된 9% Ni강 용접 조인트의 미세조직과 기계적 특성에 미치는 용접 후 열처리의 영향
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최광수, 정효연
Korean J. Met. Mater.
2023;61(9):669-678. Published online 2023 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2023.61.9.669
Abstract
A Fe-based filler material with the composition of Fe-20Ni-5Co-2.5Mn-0.2C was used for welding 9% Ni steel, and the effect of post-weld heat treatment on the microstructure and mechanical properties of the welded joints was investigated. Post-weld heat treatment of the welded joint was performed in the temperature range of 200.....
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금속 산화물 지지체를 이용한 산소환원반응에 대한 전기화학 촉매 연구 동향
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조유진, 정원석, 임보영
Korean J. Met. Mater.
2023;61(4):231-241. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.231
Abstract
Global warming and air pollution have forced greater attention to new energy sources to replace fossil fuels. Among several eco-friendly energy sources, polymer electrolyte membrane fuel cells have been increasingly investigated since they have zero emissions, high energy density, and high energy efficiency. Carbon-supported Pt catalyst is generally used for.....
More
Web of Science 4
Crossref 3
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루테늄 기반 전이금속 나노입자/환원된 산화그래핀 혼성체를 이용한 알칼리 수전해 촉매 합성
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이은빈, 조승근, 김상준, 박길령, 이정우
Korean J. Met. Mater.
2023;61(3):190-197. Published online 2023 Feb 24
DOI:
https://doi.org/10.3365/KJMM.2023.61.3.190
Abstract
Green hydrogen has attracted significant attention as one of the future energy sources because no greenhouse gases are emitted during production and its energy density is much higher than fossil fuels. Precious metals such as platinum (Pt) and iridium (Ir)-based catalysts are commonly used for water splitting catalysts. However, because.....
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Web of Science 4
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금속 박막 두께가 크랙 기반 신축성 하이브리드 압저항 전극의 스트레인 감지 특성에 미치는 영향
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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.....
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Web of Science 1
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극저온 연료탱크용 고망간강과 스테인리스강 316L 이종금속 용접부의 가스텅스텐아크 용접재료별 기계적 성질 및 미세조직
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조철호, 남성길, 유성훈, 최명환, 강남현
Korean J. Met. Mater.
2022;60(9):673-684. Published online 2022 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2022.60.9.673
Abstract
The gas tungsten arc (GTA) weldability of high-Mn (HMn) steel and austenitic stainless steel (STS) 316L using dissimilar metal welds (DMWs) was investigated, to fabricate a fuel tank for an LNG-fueled ship. Three types of welding fillers, HMn steel, STS 309LMo and Inconel 625, were applied to the DMWs. The.....
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Web of Science 4
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열가소성 성형을 이용한 비정질 합금의 홀로그램 임프린팅 공정 최적화
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류욱하, 류채우, 김경준, 곽민경, 박은수
Korean J. Met. Mater.
2022;60(9):644-653. Published online 2022 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2022.60.9.644
Abstract
The thermoplastic forming (TPF) process of metallic glass (MG) is a unique and powerful method that cannot be performed using conventional crystalline alloys. Because the mechanical and thermal properties of MGs are more favorable with smaller sample sizes, TPF is particularly useful for microscale and nanoscale part molding and micro-patterning......
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Web of Science 1
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레이저 후열처리 공정을 통한 저온공정형 IGZO 박막 트랜지스터의 특성 개선에 관한 연구
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이재윤, Anvar Tukhtaev, 유수창, 김용환, 최성곤, 유흥균, 정용진, 김성진
Korean J. Met. Mater.
2022;60(8):557-563. Published online 2022 Jul 12
DOI:
https://doi.org/10.3365/KJMM.2022.60.8.557
Abstract
High-performance thin-film transistors (TFTs) produced at low temperatures are required for ultrahigh- resolution and flexible display applications. The scientific community has been studying unconventional techniques to investigate low voltage flexible devices and low power flexible circuits for the past decade. In particular, metal oxide semiconductors, such as indium gallium zinc.....
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Web of Science 2
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Ba-Sr-Co-Fe 산화물과 La-Sr-Mn 산화물 양극을 포함하는 Ni-Fe 기반 금속지지형 고체산화물 연료전지의 전기화학적 성능
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이상은, 박준서, 박희정
Korean J. Met. Mater.
2022;60(7):523-530. Published online 2022 Jun 3
DOI:
https://doi.org/10.3365/KJMM.2022.60.7.523
Abstract
Unlike conventional solid oxide fuel cells (SOFCs) where ceramic materials have been used as a support, in this study a new SOFC structure with a metal support and a contact layer between the support and anode is suggested. A mixture of Ni-Fe alloy and zirconia ceramics as the contact layer.....
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Web of Science 1
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코발트 산화물 리튬 이온 배터리 용량 및 사이클 안정성에 대한 코발트 산화물/첨가제 계면 및 결정립 크기의 영향
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박병남
Korean J. Met. Mater.
2022;60(6):448-454. Published online 2022 May 24
DOI:
https://doi.org/10.3365/KJMM.2022.60.6.448
Abstract
Due to its high theoretical capacity in the conversion reaction, Co
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O
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, a transition metal oxide, has been attracting attention as an anode material for lithium-ion batteries. Comparing conventional slurry method with the electrophoretic deposition (EPD) method without additives (conductive agents and binders), we investigated the effect of the Co
3
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/additive interface.....
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Web of Science 3
Crossref 3
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Korean J. Met. Mater.
2022;60(5):370-375. Published online 2022 Apr 22
DOI:
https://doi.org/10.3365/KJMM.2022.60.5.370
Abstract
Kerfless wafering is a beneficial technique that enhances the cost effectiveness of crystalline silicon (c-Si) solar cells, preventing silicon (Si) waste during diamond sawing. This study compared the advantages of three stress layers for kerfless wafering: aluminum (Al) paste, epoxy-, and electroplated nickel (Ni). These materials demonstrated the ability to.....
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