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Yong Choi 4 Articles
639 Preparation of Electroformed Copper-Nickel Multi-Nano-Layers and Characterization of Their Electromagnetic Shielding Effectiveness
구리-니켈 다층 나노 도막 제조와 전자파 차폐 효과 평가
Yong Choi
최용
Korean J. Met. Mater. 2020;58(9):639-644.   Published online 2020 Aug 19
DOI: https://doi.org/10.3365/KJMM.2020.58.9.639

Abstract
Thin copper-nickel foil with multi-nano layers was prepared by pulse-electroforming to develop a high performance electromagnetic shielding material for electronic devices. The pulse electroforming conditions of the aqueous solution chemistry were selected based on the aqueous copper-nickel-sulfur phase diagram and an evaluation of the deposition rate using the finite element..... More

                        
1 Study on the Effect of the Thiourea on Nano-Mechanical Properties and Microstructures of the Electroformed Thin Ni-P Foil
Moo Young Jung, Chang Su Nam, Byung-Sik Lee, Yong Choi
Korean J. Met. Mater. 2020;58(1):1-6.   Published online 2020 Jan 1
DOI: https://doi.org/10.3365/KJMM.2020.58.1.1

Abstract
The effect of thiourea on the nano-mechanical and chemical properties of Ni-P foil was studied to develop a high performance Ni-P deposit for automobile and machinery parts. The Ni-P deposit was prepared by electroforming in a modified sulphate bath with different amounts of thiourea. Chemical analysis of the electrodeposited Ni-P..... More

                           Cited By 1
777 Self-propagating High Temperature Synthesis of Quasi-nano sized CuxNiyZn1-x-yFe2O4 with Numerical Modeling by Finite Element Method
유한요소법에 의한 수학적 모델링을 활용한 준-나노 CuxNiyZn1-x-yFe2O4 페라이트 연소합성
Moon Sun Gu, Yong Choi
구문선, 최용
Korean J. Met. Mater. 2017;55(11):777-782.   Published online 2017 Oct 31
DOI: https://doi.org/10.3365/KJMM.2017.55.11.777

Abstract
Numerical modeling of the self-propagating high temperature synthesis (SHS) of CuxNiyZn1-x-yFe2O4 ferrites was carried out using the finite element method, to control the combustion synthesis behaviors of the ferrites. Additional pre-heating above 300 ℃ caused the combustion temperature at the inner surface of the reactant compact to completely propagate the..... More

      
91 Study on the Mechanical Properties and Corrosion Behaviors of Fe-(20, 45) wt% Gd Intermetallics
Fe-(20, 45) wt% Gd 금속간 화합물의 기계적 특성 및 부식 거동 연구
Bo Kyeong Kang, Youl Baik, Yong Choi, Byung Moon Moon
강보경, 백열, 최용, 문병문
Korean J. Met. Mater. 2017;55(2):91-97.   Published online 2017 Feb 2
DOI: https://doi.org/10.3365/KJMM.2017.55.2.91

Abstract
Fe-(20, 45 wt%) Gd intermetallics were vacuum arc melted as the mother alloy of a neutron shielding and absorbing material. The structure of the cast Fe-20 wt% Gd intermetallics had primary dendrites with a short width of about 2 μm, which became coarse with increasing Gd content. The final compositions..... More

      
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