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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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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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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.....
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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
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) is selective catalytic reduction (SCR) using NH
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as a reductant. However, the NH
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-SCR technology has problems, such as the need for additional NH
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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 1
Crossref 2
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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.....
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Crossref 1
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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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Crossref 1
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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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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 2
Crossref 2
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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
Crossref 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 1
Crossref 1
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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
Crossref 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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, 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
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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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Korean J. Met. Mater.
2022;60(1):68-75. Published online 2021 Dec 10
DOI:
https://doi.org/10.3365/KJMM.2022.60.1.68
Abstract
A copper (Cu) metal-ceramic filler composite with high thermal conductivity and a suitable thermal expansion coefficient was designed for application as a high-performance heat dissipation material. The purpose of the designed material was to utilize the high thermal conductivity of Cu while lowering its high coefficient of thermal expansion by.....
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조성에 따른 Zn-Ni 합금 박막의 전자파 차폐/흡수 특성 및 부식특성 연구
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임정욱, 김용환, 김연주, 송풍근, 권아람
Korean J. Met. Mater.
2022;60(1):62-67. Published online 2021 Dec 10
DOI:
https://doi.org/10.3365/KJMM.2022.60.1.62
Abstract
In the Fourth industrial age, there is increasing use of electronic devices with high frequency (GHz) operating circuits for radio wave transmission/reception. This can lead to electromagnetic noise, and malfunctions in nearby devices. Electromagnetic shielding technology has emerged as an important way of preventing device malfunctions due to noise, and.....
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Web of Science 2
Crossref 2
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텅스텐산암모늄 단계 생략 초경합금 슬러지 재활용 공정에 의해 제조된 텅스텐의 소결 및 경도 특성
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권한중, 신정민
Korean J. Met. Mater.
2022;60(1):53-61. Published online 2021 Dec 10
DOI:
https://doi.org/10.3365/KJMM.2022.60.1.53
Abstract
In this paper, we suggest a novel recycling process for hard metal sludge that does not use ammonium paratungstate. Ammonia, which in the conventional recycling process is essential for removing sodium and crystallized tungstate, was not used in the novel process. Instead of ammonia, acid was used to remove the.....
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Web of Science 1
Crossref 2
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권한중
Korean J. Met. Mater.
2022;60(1):14-25. Published online 2021 Dec 10
DOI:
https://doi.org/10.3365/KJMM.2022.60.1.14
Abstract
The metallic binder in WC-Co hard metals was effectively strengthened using the solid solution phases of Co and W. These metallic phases of Co and W (Co
1-x
W
x
, x<1), which consist of two kinds of structures (FCC and HCP), were successfully formed by hydrogen reduction of milled oxides mixtures (Co
3
O
4
and.....
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Web of Science 1
Crossref 2
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Ti/Cu 이종 마찰 교반 용접 시 미세조직과 기계적 특성에 미치는 회전속도의 영향
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이용재, 정원기, 신세은, 이동근
Korean J. Met. Mater.
2021;59(12):886-892. Published online 2021 Nov 19
DOI:
https://doi.org/10.3365/KJMM.2021.59.12.886
Abstract
The dissimilar welding of titanium and copper by fusion welding is very difficult because the melting points of the materials are very highly different and strong brittle intermetallic compounds (IMCs) can be easily produced in welded zone and heat-affected zone, etc. Friction stir welding was employed as a type of.....
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Web of Science 3
Crossref 4
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Korean J. Met. Mater.
2021;59(9):640-651. Published online 2021 Aug 4
DOI:
https://doi.org/10.3365/KJMM.2021.59.9.640
Abstract
The paper provides experimental details of the welding and specific examples of welding aluminum welding battery cans and conductive tabs for battery pack manufacture. In this study, we provide experimental details of a process for joining dissimilar materials used in sealing battery parts. A laser brazing technique was used for.....
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착용형 히터 응용을 위한 금속 나노와이어 기반 신축성 메쉬 전극 제작
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장남수, 김강현, 김종만
Korean J. Met. Mater.
2021;59(8):575-581. Published online 2021 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2021.59.8.575
Abstract
In recent years, human-convenient smart wearable devices have attracted considerable attention as emerging applications in smart healthcare systems, soft robotics, and human-machine interfaces. In particular, resistive film heaters with mechanical flexibility and excellent mechanical and electrothermal performance have recently been widely explored for wearable thermotherapy applications. Here, we present a.....
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Web of Science 5
Crossref 5
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MgF
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-CaF
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-NaF 및 MgF
2
-LiF 용융염에서 액체금속 음극을 이용한 산화마그네슘의 신전해법 개발
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이태혁, 박형규, 이진영, 김영민, 강정신
Korean J. Met. Mater.
2021;59(6):392-403. Published online 2021 May 26
DOI:
https://doi.org/10.3365/KJMM.2021.59.6.392
Abstract
A novel magnesium (Mg) production process utilizing an electrolytic method was investigated for the direct reduction of magnesium oxide (MgO). Electrolysis of MgO was carried out with an applied voltage of 3.0 V using a copper (Cu), silver (Ag), or tin (Sn) cathode and carbon (C) or platinum (Pt) anode.....
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Web of Science 3
Crossref 3
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Korean J. Met. Mater.
2021;59(6):357-364. Published online 2021 May 26
DOI:
https://doi.org/10.3365/KJMM.2021.59.6.357
Abstract
W-containing Ti-6Al-4V alloys (W=0, 1, and 5 wt%) were fabricated by the powder injection molding process, and the corresponding effects of tungsten content on the mechanical properties and microstructure of the alloys were investigated. The alloy powders were sintered at 1200 °C and then hot-isostatically-pressed at 900 °C. The fabricated.....
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Web of Science 3
Crossref 4
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방전플라즈마 소결법에 의해 제조된 Cu-Ni-Zr-Ti 비정질 기지 복합재료의 미세조직 및 기계적 특성
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신다운, 민 홍, 이진규
Korean J. Met. Mater.
2021;59(5):281-288. Published online 2021 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.5.281
Abstract
In the present study, Cu
54
Ni
6
Zr
22
Ti
18
bulk metallic glass composites were developed by spark plasma sintering(SPS) using gas atomized Cu
54
Ni
6
Zr
22
Ti
18
metallic glass powders and Ta powders. Metallic glass composites with Ta phase were fabricated by SPS. The successful consolidation of Cu
54
Ni
6
Zr
22
Ti
18
metallic glass matrix composites with the Ta phase was achieved.....
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Web of Science 1
Crossref 2
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인장강도 600 MPa급 저탄소강 필렛 용접부의 저온균열과 미세조직에 따른 수소취성 민감성 및 수소확산 거동
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안형진, 이정훈, 박한지, 유재석, 정성욱, 박종민, 강남현
Korean J. Met. Mater.
2021;59(1):21-32. Published online 2021 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2021.59.1.21
Abstract
Hydrogen flowing into a weld causes hydrogen embrittlement (HE), so to prevent cold cracks in the weld, HE must be suppressed. In this study, single-pass fillet weldments were fabricated using two different welding fillers with the same strength level as the American Welding Society standard. The specimen F-HNi, which had.....
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Web of Science 8
Crossref 7
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Journal Impact Factor 1.2