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Korean J. Met. Mater.
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Twin wire arc spray 공정을 통해 제작된 Al-Al
2
O
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복합소재 미끄럼 방지 코팅의 우수한 마모 저항성
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권한솔, 박영진, 강용진, 김도현, 남욱희, 변응선
Korean J. Met. Mater.
2024;62(4):257-266. Published online 2024 Mar 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.4.257
Abstract
In this study, novel non-skid Al-Al
2
O
3
coatings with improved wear resistance were fabricated using twin wire arc spray (TWAS). TWAS Al coating was prepared as a reference sample and representative TWAS parameters (working distance, process gas pressure, arc current) were controlled to fabricate different Al-Al
2
O
3
coatings. The Al-Al
2
O
3
coatings showed.....
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Korean J. Met. Mater.
2023;61(11):867-873. Published online 2023 Oct 29
DOI:
https://doi.org/10.3365/KJMM.2023.61.11.867
Abstract
Commercial AA1070 alloy for electrical wire is severely deformed by the drawing process when a rod with a diameter of 2 mm is greatly reduced to 0.4 mm by multi-pass. Changes in the microstructure, mechanical properties, and electrical properties of the Al alloy during the wire-drawing process were investigated in.....
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Twin wire arc spray 용사코팅 공정을 통해 제작된 미끄럼 방지 코팅의 열적 특성 및 고온노출 거동 연구
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권한솔, 박영진, 남욱희, 변응선
Korean J. Met. Mater.
2023;61(9):642-651. Published online 2023 May 14
DOI:
https://doi.org/10.3365/KJMM.2023.61.9.642
Abstract
Conventional non-skid coatings for marine construction contain polymeric materials. These materials are generally susceptible to high temperature environments because of their low thermal conductivity and thermal resistance. A metal-based non-skid coating has great potential for high temperature applications, yet, there has only been limited research. In this study, twin wire.....
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Web of Science 1
Crossref 1
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MgO 나노선의 성장과 음극선 발광 특성에 미치는 산소 농도의 영향
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이근형
Korean J. Met. Mater.
2023;61(7):509-513. Published online 2023 Jun 21
DOI:
https://doi.org/10.3365/KJMM.2023.61.7.509
Abstract
MgO nanowires were grown by a thermal evaporation method at different N
2
/O
2
gas ratios in order to investigate the effect of oxygen concentration on the growth and luminescence properties of the MgO nanowires. A thermal evaporation process was conducted at 1000
o
C and under a pressure of 500Torr. No nanowires were.....
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대기압의 공기 분위기에서 열증발법에 의해 합성된 가지상 구조의 MgO 나노선
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이근형
Korean J. Met. Mater.
2023;61(6):444-448. Published online 2023 May 18
DOI:
https://doi.org/10.3365/KJMM.2023.61.6.444
Abstract
MgO nanowires with a branched structure were fabricated using a thermal evaporation method in air at atmospheric pressure. The branched MgO nanowire was made up of two parts: a primary central nanowire trunk and lots of secondary nanowire branches. The branched MgO nanowires had a 4-fold symmetrical structure. The secondary.....
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Twin wire arc spray 용사코팅 공정을 통해 제작된 내부식성 Al 및 Al-3%Ti 미끄럼 방지 코팅의 비교 연구
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권한솔, 박영진, 남욱희, 이은경, 변응선
Korean J. Met. Mater.
2023;61(4):242-251. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.242
Abstract
To ensure the lifetime of marine constructions and the safety of workers and pedestrians, corrosion protective non-skid coating is an effective solution. However, the conventional polymer-based coating has some limitations. In this study, newly-suggested Al and Al-3%Ti coatings were deposited on high strength low alloyed steel substrate using twin wire.....
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Web of Science 2
Crossref 2
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최진주, 임병용, 강유빈, 김대근
Korean J. Met. Mater.
2021;59(11):796-801. Published online 2021 Oct 28
DOI:
https://doi.org/10.3365/KJMM.2021.59.11.796
Abstract
Compressed wires are produced by cross-sectionally compressing stranded conductors, which results in a smaller conductor diameter. This also leads to a lower weight wire, because a thinner external insulated coating can be used, compared to the low-voltage wires typically used in automobiles. However, a post production heat treatment of the.....
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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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Korean J. Met. Mater.
2020;58(12):852-862. Published online 2020 Dec 4
DOI:
https://doi.org/10.3365/KJMM.2020.58.12.852
Abstract
Generally, molds are fabricated by the machining of massive billets of tool steels, such as AISI4140 or H13, but it has drawbacks, such as a large material loss and long-delivery time. The Wire-Arc Additive Manufacturing (WAAM) process could be an alternative fabrication method. It has the advantages of less material.....
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Web of Science 8
Crossref 12
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급속응고된 Fe-Si-B(-Cu-Zr-Ca)계 나노결정 합금의 미세조직과 결정립성장 억제에 관한 연구
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임현아, 정준영, 안수봉, 손근용, 박원욱
Korean J. Met. Mater.
2020;58(9):633-638. Published online 2020 Aug 19
DOI:
https://doi.org/10.3365/KJMM.2020.58.9.633
Abstract
Magnetic induction and resonance wireless power charging generally operates in a high frequency range, and its efficiency is degraded by the generation of heat at high frequency. This makes it necessary to develop new soft magnetic materials capable of maintaining their characteristics even at high frequency. The purpose of this.....
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Web of Science 3
Crossref 2
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Korean J. Met. Mater.
2019;57(11):732-740. Published online 2019 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.11.732
Abstract
To attain high life standards, it is important to develop high-performance non-toxic gas sensors for public safety, environmental pollutant control, industrial processes, etc. Because reports on single element semiconductor-coated semiconducting metal oxides for sensing applications are rare, we synthesized SnO
2
nanowires and coated them with a 5 nm-thick or 10.....
More
Crossref 5
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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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신축성 금속 나노선 압저항 전극 기반 로젯 스트레인 센서
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김강현, 차재경, 김종만
Korean J. Met. Mater.
2018;56(11):835-843. Published online 2018 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.11.835
Abstract
In this work, we report a delta rosette strain sensor based on highly stretchable silver nanowire (AgNW) percolation piezoresistors. The proposed rosette strain sensors were easily prepared by a facile twostep fabrication route. First, three identical AgNW piezoresistive electrodes were patterned in a simple and precise manner on a donor.....
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Crossref 1
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Korean J. Met. Mater.
2017;55(11):806-812. Published online 2017 Oct 31
DOI:
https://doi.org/10.3365/KJMM.2017.55.11.806
Abstract
Nanoscale Sn-Bi-Ag compound powders were successfully synthesized using the pulsed wire discharge (PWD) method. In PWD, when a high current is passed through high-density metal wires, the wires explode because of resistance heating, forming fine particles or metal vapor. In this study, we used Sn-Bi and Ag wires in order.....
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Al 5083 합금 용접부의 기계적 물성에 미치는 Mg의 영향
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김동윤, 김동철, 강문진, 김영민
Korean J. Met. Mater.
2017;55(10):716-723. Published online 2017 Sep 28
DOI:
https://doi.org/10.3365/KJMM.2017.55.10.716
Abstract
A new aluminum welding wire with 0.8 wt% higher in Mg content was developed and compared with commercial welding wire of the 5000 series. The weldability of the Al5083 base material was evaluated using high current metal inert gas (MIG) welding, using the developed Al5183 and commercial Al5183 welding wire......
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스프레이 코팅법으로 증착된 은나노선의 특성에 미치는 분산용매의 영향
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최지혜, 장아연, 김정희, 정중희, 홍기하
Korean J. Met. Mater.
2017;55(7):509-514. Published online 2017 Jul 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.7.509
Abstract
Silver nanowire (AgNWs) networks offer a promising approach for producing cost effective transparent electrode materials. However, high temperature annealing is necessary to achieve low sheet resistance, which limits the use of AgNWs for low temperature processing applications such as flexible electronics, and perovskites solar cell fabrication. This study shows that.....
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Crossref 2
Material Analysis & Characterization
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Korean J. Met. Mater.
2017;55(1):72-76. Published online 2017 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2017.55.1.72
Abstract
We used Sn-58Bi and Cu wires to investigate the effects of variable conditions (such as pressure and wire diameter) on the formation of three-component nanoparticles. In the synthesis of the three-component nanoparticles, pulsed wire discharge was used to sublimate the wires. In this system, the K factor is described as.....
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Crossref 1
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Invar 36 합금 선재의 미세조직에 미치는 냉간 인발 및 열처리 공정의 영향
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한승엽, 장선아, 은희철, 최정훈, 이기락, 박환서, 안도희, 김수영, 김재열, 신상용
Korean J. Met. Mater.
2016;54(10):759-767. Published online 2016 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.10.759
Abstract
In this study, the effect of cold drawing and heat treatment on the microstructure of Invar36 alloy wire was investigated. Invar36 alloy wire is used as a transmission line core material, and is required to have high strength. The diameter of the Invar36 alloy wire specimens were reduced from 16.....
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Crossref 2
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