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Electrowinning of Neodymium Metal Using FLiNdBa Molten Salt
FLiNdBa 용융염을 이용한 네오디뮴 금속의 전해채취
Sung-Wook Cho, Jeong-Hyun Yu
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

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:NdF3:BaF2 = 7.5:67.4:25.1 (in wt%, FLiNdBa). It focused..... More

                           Cited By 1
Improvement of Photoelectrochemical Properties of WO<sub>3</sub> Photoelectrode Fabricated by Using H<sub>2</sub>O<sub>2</sub> Additive
H2O2 첨가제를 이용하여 제작한 WO3 광전극의 광전기화학적 특성 개선 연구
Seung-Hwan Jeon, Hyunjin Jeong, Seongchan Bae, Hyukhyun Ryu, Won-Jae Lee
전승환, 정현진, 배성찬, 류혁현, 이원재
Korean J. Met. Mater. 2021;59(3):177-186.   Published online 2021 Feb 19
DOI: https://doi.org/10.3365/KJMM.2021.59.3.177

In this study, we deposited a WO3 thin-film photoelectrode on a fluorine-doped tin oxide (FTO) substrate using a spin-coating method, and we investigated the photocurrent density and dark current density of the WO3 photoelectrode with various amounts of H2O2 additive. The morphological, structural, optical, electrical and photoelectrochemical properties of the..... More

                           Cited By 1
Photoelectrochemical Properties of Copper Oxide Photoelectrode with Various Copper Oxide Buffer Layers
CuO 버퍼층 증착 횟수에 따른 CuO 광전극의 광전기화학적 특성 연구
Seung-Hwan Jeon, Yaejin Hong, Hyukhyun Ryu, Won-Jae Lee
전승환, 홍예진, 류혁현, 이원재
Korean J. Met. Mater. 2019;57(7):447-455.   Published online 2019 Jun 5
DOI: https://doi.org/10.3365/KJMM.2019.57.7.447

In this study, a CuO buffer layer was deposited on a fluorine-doped tin oxide (FTO) substrate using a spin coating method, and then a CuO photoelectrode was grown on the CuO buffer layer using a modified-chemical bath deposition (M-CBD) method. We investigated the morphological, structural, optical, electrical and photoelectrochemical properties..... More

                           Cited By 1
Main Effects of Plating Parameters on Mechanical and Surface Properties of Electroplated Copper
구리 전해도금 변수의 기계적 특성 및 표면 특성에 미치는 주 효과 분석
Tae-Gyu Woo, Il-Song Park, Kyeong-Won Seol
우태규, 박일송, 설경원
Korean J. Met. Mater. 2018;56(6):459-464.   Published online 2018 Jun 4
DOI: https://doi.org/10.3365/KJMM.2018.56.6.459

Electroplated copper has been used as wiring in electronic circuit boards and as cathode materials for secondary batteries, and its usage has expanded into the construction industry because of its convenient production and high economic value. During the electroplating process, various parameters, such as crystal phase and size, can affect..... More

                           Cited By 1
Study of the Morphological, Structural, Optical and Photoelectrochemical Properties of Zinc Oxide Nanorods Grown Using a Microwave Chemical Bath Deposition Method
마이크로파 화학 용액 증착법을 이용하여 성장시킨 ZnO 나노로드의 형태학적, 구조적, 광학적 그리고 광전기화학적 특성 변화 연구
Sungjin Oh, Hyukhyun Ryu, Won-Jae Lee
오성진, 류혁현, 이원재
Korean J. Met. Mater. 2017;55(4):255-263.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.255

In this study, zinc oxide (ZnO) nanostructures were grown on a ZnO-buffered fluorine-doped tin oxide (FTO) substrate using a microwave chemical bath deposition method with different zinc oxide precursor concentrations from 0.01 to 0.5 M. We investigated the effects of the zinc oxide precursor concentration on the morphological, structural, optical..... More

         Cited By 2
Optical Devices & Energy Materials
Study of the Morphological, Structural and Photoelectrochemical Properties of TiO<sub>2</sub> Nanorods grown by Hydrothermal Method
수열합성법으로 성장시킨 TiO2 나노로드의 형태학적, 구조적, 광전기화학적 특성 연구
Hayoung Choi, Hyukhyun Ryu, Won-Jae Lee
최하영, 류혁현, 이원재
Korean J. Met. Mater. 2017;55(1):46-52.   Published online 2017 Jan 5
DOI: https://doi.org/10.3365/KJMM.2017.55.1.46

We investigated the effects of growth duration on the morphological, structural, and photoelectrochemical properties of TiO2 nanorods grown on a TiO2-buffered fluorine-doped tin oxide (FTO) substrate using the hydrothermal method. From the study, we found that the photoelectrochemical properties were mainly dependent on the nanorod length and (002) XRD peak..... More

         Cited By 2
Kinetics of Intermetallic Compounds Growth Induced by Electromigration of Sn-0.7Cu Solder
Electromigration에 의한 Sn-0.7Cu 솔더 금속간화합물 성장 예측
Min-Hyeok Heo, Namhyun Kang, Seonghun Park, Jun-Ki Kim, Won Sik Hong
허민혁, 강남현, 박성훈, 김준기, 홍원식
Korean J. Met. Mater. 2016;54(12):908-915.   Published online 2016 Dec 5
DOI: https://doi.org/10.3365/KJMM.2016.54.12.908

The reliability of printed circuit boards (PCB) has emerged as a critical concern as the size of solder bump decreases and current density to solder bump increases by fine pitch formation. The main failure mode of solder bumps is open-circuits due to void formation as intermetallic compounds (IMC) grow, mainly..... More

         Cited By 4
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