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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Electrodeposition Process Conditions and Microstructure for Uniform Co Coatings on SOFC Interconnects
SOFC 연결재 표면에 균일한 Co 코팅막 형성을 위한 전기도금 공정 조건과 미세조직
Ki-Young Lee, Jae-Hun Choi, Han-Kyun Shin, Hyo-Jong Lee, Hyun Park, Jung Han Kim이기영, 최재훈, 신한균, 이효종, 박현, 김정한
Korean J. Met. Mater.
2025;63(7):494-506. Published online 2025 Jul 1
DOI:
https://doi.org/10.3365/KJMM.2025.63.7.494
Abstract
Interconnects in solid oxide fuel cells (SOFCs) serve as electrical pathways between individual cells while also separating the fuel and air streams in each cell. For SOFCs operating at low temperatures (600 ~ 800
o
C), ferritic stainless steel with high Cr content is commonly used as the interconnect material. However,.....
More
Effect of Si on the Yield Strength of Medium-Carbon Steels Consisting of Ferrite and Pearlite
중탄소강의 페라이트-펄라이트 미세조직과 항복강도에 미치는 Si 첨가의 영향
Jae Hyeon Ko, Kyeong-Won Kim, Jae Hoon Jang, Ki-Young Lee, Hyun Park, Jung Han Kim, Jung Won Lee, Yong Hyun Kim, Sung Min Hong, Jun-Yun Kang, Yoon Suk Choi고재현, 김경원, 장재훈, 이기영, 박현, 김정한, 이정원, 김용현, 홍성민, 강전연, 최윤석
Korean J. Met. Mater.
2024;62(11):897-910. Published online 2024 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.11.897
Abstract
To enhance the intrinsic yield strength of the ferrite-pearlite microstructure that inevitably forms in a non-quenched-and-tempered steel for large structural components, this study analyzed the effect of adding Si. The resulting ferrite-pearlite microstructure in medium-carbon steels was examined, and the resulting increase in yield strength was interpreted based on strengthening.....
More
Microstructural Analysis of Solder Bump Fabricated by Sn Electroplating on a PCB Substrate
Sn 도금을 통한 PCB 기판상의 솔더 범프 제작 및 미세조직 분석
Sang-Hyeok Kim, Seong-Jin Kim, Han-Kyun Shin, Hyun Park, Cheol-Ho Heo, Seongjae Moon, Hyo-Jong Lee김상혁, 김성진, 신한균, 박현, 허철호, 문성재, 이효종
Korean J. Met. Mater.
2021;59(4):233-238. Published online 2021 Mar 24
DOI:
https://doi.org/10.3365/KJMM.2021.59.4.233
Abstract
To manufacture finer solder bumps, the SR and DFR patterns were filled using a Sn electroplating process instead of the microball process currently used in BGA technology, and the solder bump shape was fabricated through a reflow process. The microstructure of the solder bump was investigated by EBSD and TEM.....
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Web of Science 2
Measurement of Intrinsic Hardness of Deposited Chromium Thin Films by Nanoindentation Method and Influencing Factors
나노인덴테이션 방법으로 크롬 박막의 고유경도를 측정하는 방법과 영향 인자
Young-Joon Kang, Ju-Hwan Baeg, Hyun Park, Young-Rae Cho강영준, 백주환, 박현, 조영래
Korean J. Met. Mater.
2020;58(3):207-215. Published online 2020 Mar 5
DOI:
https://doi.org/10.3365/KJMM.2020.58.3.207
Abstract
Materials with very small dimensions exhibit different physical and mechanical properties compared to their bulk counterparts. This becomes significantly important for the thin films that are widely used as components in micro-electronics and functional materials. In this study, a chromium (Cr) thin film was deposited on a silicon (Si) wafer.....
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Web of Science 4
Crossref 3
Effect of Shear Deformation During Drawing on Inhomogeneous Microstructures and Textures in High Purity Copper Wires After Annealing
고순도 구리 선재의 어닐링 후 불균질 미세조직과 집합조직에 미치는 신선 시 전단 변형의 영향
Hyun Park, Sang-Hyeok Kim, Se-Jong Kim, Hyo-Jong Lee박현, 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.....
More
Crossref 4
Catalytic Activity and Surface Characteristics of WO
3
-doped MnO
x
-TiO
2
Catalysts for Low-temperature Selective Catalytic Reduction of NO
x
with NH
3
Byeongkil Shin, Heesoo Lee, Hyun Park
Korean J. Met. Mater.
2016;54(10):787-792. Published online 2016 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.10.787
Abstract
The effect of added WO
3
on the catalytic activity and surface characteristics of the MnO
x
-TiO
2
system was investigated for the low-temperature selective catalytic reduction of NO
x
with NH
3
. Based on physio-chemical characterizations, the specific surface areas of the WO
3
-MnO
x
-TiO
2
catalysts increased from 76.12 m
2
/g to 90.29 m
2
/g as the WO
3
...
More
Crossref 1
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