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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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코어-쉘 구조 YSZ/CeO
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계 복합체 열차폐 코팅 제조 및 물성
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이계원, 박태준, 최선웅, 김종일, 안계석, 이인환, 오윤석
Korean J. Met. Mater.
2024;62(7):495-502. Published online 2024 Jun 28
DOI:
https://doi.org/10.3365/KJMM.2024.62.7.495
Abstract
In this study, we researched changes in the properties of a Thermal Barrier Coating depending on the powder structure. For this purpose, we used YSZ (Yttria Stabilized Zirconia), a commercial Thermal Barrier Coating material, to produce a powder with a Core-Shell structure. Bulk samples were prepared by hot pressing to.....
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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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유무기 하이브리드 할라이드 페로브스카이트의 안정성 향상을 위한 연구 동향 리뷰
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설명진, 한정우, 황승환, 김수영
Korean J. Met. Mater.
2022;60(1):1-13. Published online 2021 Dec 10
DOI:
https://doi.org/10.3365/KJMM.2022.60.1.1
Abstract
Because of their superior optical, and electrical properties, lead halide perovskites have emerged as potential materials for light-emitting-diodes. However, some obstacles have yet to be overcome for practical applications including low exciton binding energy, the difficulty of fabricating uniform perovskite films,, and their instability to heat, light, and moisture. In.....
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Web of Science 9
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Korean J. Met. Mater.
2021;59(8):524-532. Published online 2021 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2021.59.8.524
Abstract
The microstructure, mechanical properties and residual stress of flux-cored arc welded ASTM A516-70N carbon steel using a Mn-based low-temperature transformation (LTT) welding consumable were investigated. Microstructural analysis with X-ray diffraction, an electron backscattered diffractometer and a field-emission scanning electron microscope showed that the LTT weld metal was made up of.....
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Web of Science 1
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물유리계 바인더로 제조한 천연주물사와 인공주물사 중자의 강도 특성
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배민아, 김판성, 김경호, 이만식, 백재호
Korean J. Met. Mater.
2021;59(4):273-280. Published online 2021 Mar 24
DOI:
https://doi.org/10.3365/KJMM.2021.59.4.273
Abstract
Natural sand and organic binders are commonly used in casting processes, but these ingredients produce environmental problems with dust and harmful TVOC(Total Volatile Organic Carbon) gases. Research on the introduction of artificial sand and inorganic binders to solve these environmental problems is being actively conducted mainly in the casting industry......
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Web of Science 1
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Ca와 Zr을 소량 첨가한 나노결정 Fe-Si-B-Cu계 합금의 미세조직변화와 자기적특성
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안수봉, 장수환, 박원욱, 손근용
Korean J. Met. Mater.
2021;59(3):168-176. Published online 2021 Feb 19
DOI:
https://doi.org/10.3365/KJMM.2021.59.3.168
Abstract
Nanocrystalline Fe-Si-B-Nb-Cu Finemet alloys show low saturation magnetic flux density compared to amorphous Fe-Si-B alloys. In the Fe-Si-B-Cu base amorphous alloys, Cu atoms form clusters which act as heterogeneous nucleation sites for α-Fe crystals. The addition of Ca element atoms, distributed along grain boundaries, helps inhibit grain growth and increase.....
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Web of Science 2
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Korean J. Met. Mater.
2020;58(5):319-325. Published online 2020 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2020.58.5.319
Abstract
In recent years, the metal casting industry has sought to meet ever more stringent environmental standards. Inorganic binders based on silicate chemistry have many advantages with respect to environmental issues, but often suffer from reduced strength, burn-on and poor water-resistance. In particular, when sand is mixed with a water glass.....
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Web of Science 5
Crossref 3
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에너지-전이 형광 특성 향상을 위한 다공성 실리카 중간층이 추가된 코어-쉘 나노입자 제조 및 특성평가
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심우형, 김세윤, 신원호, 정형모
Korean J. Met. Mater.
2020;58(2):137-144. Published online 2020 Jan 8
DOI:
https://doi.org/10.3365/KJMM.2020.58.2.137
Abstract
Multi-layer core-shell nanoparticles (YVO
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:Nd
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/mSiO
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) consisting of silica cores (SiO
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), mesoporous silica (mSiO
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) intermediate layers, and Neodymium doped rare-earth phosphor (YVO
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:Nd
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) shell layers were successfully synthesized using the stepwise sol-gel method. The morphological structure and optical properties of the functional core-shell nanoparticles were characterized and evaluated by transmission electron microscopy (TEM),.....
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Web of Science 3
Crossref 2
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해양플랜트용 YP 690 MPa급강 다층 용접부의 재열 균열 특성 평가
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신용택, 조영주
Korean J. Met. Mater.
2018;56(8):580-588. Published online 2018 Aug 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.8.580
Abstract
This study evaluated the relationship between reheat cracking that occurs in the reheated weld zone formed by subsequent multi-pass welding and the preheat/interpass temperature. The multi-pass weldment was YP 690 MPa high-strength steel, which is used in mobile offshore platform units. The welding process was flux-cored arc welding (FCAW), which.....
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물유리계 바인더의 첨가제가 Al-Si7Mg 합금 주조 시 소착에 미치는 영향
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배민아, 김명환, 박정욱, 이만식
Korean J. Met. Mater.
2018;56(4):327-333. Published online 2018 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.4.327
Abstract
Traditional organic binders used by the foundry industry produce problems such as generation of volatile organic compounds(VOCs), smoke and etc. A water glass binder system has been developed to improve the casting strength and to solve the environmental problems. However the water glass binder has a serious problem of sand.....
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Crossref 3
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퍼멀로이 분말이 혼합된 철계 나노결정립 분말코어의 성형밀도와 연자성 특성에 관한 연구
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신정훈, 정영목, 손근용, 박원욱
Korean J. Met. Mater.
2017;55(9):645-650. Published online 2017 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2017.55.9.645
Abstract
In this paper, the soft magnetic properties and compaction density of Fe-Si-B-Nb-Cu nanocrystalline powder cores, mixed with two kinds of permalloy powders (Ni
70
Fe
30
or Ni
50
Fe
50
), have been closely studied. Permalloy powders having an average diameter of 4
μ
m were added in the range of 5 to 15 wt%, and the powder.....
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