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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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FLiNdBa 용융염을 이용한 네오디뮴 금속의 전해채취
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조성욱, 유정현
Korean J. Met. Mater.
2022;60(2):124-131. Published online 2022 Jan 12
DOI:
https://doi.org/10.3365/KJMM.2022.60.2.124
Abstract
Neodymium is the most used of rare earth elements. Its demand is rapidly increasing as the raw material for Nd-Fe-B permanent magnets. In the present study, the preparation of neodymium metal by molten salt electrowinning was investigated, using the support salt of LiF:NdF
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= 7.5:67.4:25.1 (in wt%, FLiNdBa). It focused.....
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매트랩/시뮬링크 simulation model을 이용한 열전 모듈의 효율 예측
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이나영, 예성욱, Rahman Jamil Ur, 탁장렬, 조중영, 서원선, 신원호, Walter Commerell, 남우현, 노종욱
Korean J. Met. Mater.
2021;59(11):829-837. Published online 2021 Oct 28
DOI:
https://doi.org/10.3365/KJMM.2021.59.11.829
Abstract
Development new high-performance thermoelectric materials for more efficient power generation systems and eco-friendly refrigerating systems has been challenging. Over the past few decades, thermoelectric studies have been focused on increasing the thermoelectric properties of materials. However, for conventional applications, developing of thermoelectric devices or modules with lower cost and.....
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BaO가 담지된 V2O5-WO3/TiO2 SCR 촉매의 질소산화물 흡, 탈착 특성 및 제거 효율
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김진우, 예보라, 이민우, 정보라, 이덕현, 이희수, 김홍대
Korean J. Met. Mater.
2019;57(4):270-277. Published online 2019 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.4.270
Abstract
Recently, directly emitted NOx upon start-up has been spotlighted as a significant emissions problem. BaO loaded V2O5-WO3/TiO2 Selective Catalytic Reduction (SCR) catalysts were synthesized with various contents of barium which was a representative NOx adsorbent and their NOx adsorption, desorption, and removal efficiency were shown. The phase of BaO was.....
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실리콘 프레넬 렌즈 기반 트랜스미터 광모듈의 광정렬 설계 및 특성 향상 연구
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황인엽, 하준석, 류상완
Korean J. Met. Mater.
2017;55(11):813-818. Published online 2017 Oct 31
DOI:
https://doi.org/10.3365/KJMM.2017.55.11.813
Abstract
The silicon microlens is a key element in advanced optical packaging. However, the difficulty of its fabrication process and low yield have hindered the development of an silicon lens based optical device module. A silicon Fresnel lens was studied using ray tracing optical simulation, because its small sagittal height allows.....
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레이저 다이오드와 단일 모드 광섬유 간의 광 결합 최적화를 위한 실리콘 플라노 컨벡스 렌즈 설계
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황인엽, 박종오, 하준석, 류상완
Korean J. Met. Mater.
2017;55(4):274-283. Published online 2017 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2017.55.4.274
Abstract
High speed and large capacity optical communication networks are needed to meet the demands of increased traffic being created by mobile services. Advanced optical communication systems are based on high performance optical device modules that have small footprints and low power consumption. A microlens with a short coupling length and.....
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Corrosion & Surface Treatment
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금도금의 전류효율에 미치는 과황산칼륨 첨가의 영향
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손인준, 손호상, 김경태
Korean J. Met. Mater.
2016;54(9):652-658. Published online 2016 Sep 5
DOI:
https://doi.org/10.3365/KJMM.2016.54.9.652
Abstract
In this study, the effect of potassium persulfate on current efficiency for gold plating was investigated using electrochemical techniques. The current efficiency in the low-current-density range greatly decreased when potassium persulfate was added to the gold plating solution. However, the current efficiency in the high-current-density range did not change with.....
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