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논문 기본 정보

자료유형
학술저널
저자정보
Chung, Kook-Chae (Korea Institute of Machinery and Materials) Yoo, Jai-Moo (Korea Institute of Machinery and Materials) Ko, Jae-Woong (Korea Institute of Machinery and Materials) Kim, Young-Kuk (Korea Institute of Machinery and Materials) Kim, Tae-Hyung (Korea Electrotechnology Research Institute) Ko, Rock-Kil (Korea Electrotechnology Research Institute)
저널정보
한국초전도저온학회 한국초전도·저온공학회논문지 한국초전도·저온공학회논문지 제8권 제4호
발행연도
2006.1
수록면
12 - 14 (3page)

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YBCO coated conductors have been fabricated by the reel-to-reel processing using TFA-MOD method. In this work, the fluorine-free Y & Cu precursor solution was synthesized to shorten the calcining time by reducing the evolution of HF gas, thus the meter-long YBCO precursor films can be made within few hours by the continuous slot-die coating & calcination step using the F-free Y & Cu precursor solution. The annealing step was followed to make the YBCO films by the reel-to-reel method with the vertical gas flow system onto the moving tape. To increase the growth rate of the YBCO films by enhancing the removal of HF gas, the low total pressure was adopted in the annealing processing. And the water partial pressure and the oxygen partial pressure were varied to optimize the growth conditions of the MOD-YBCO films on the buffered metal tape. FE-SEM and XRD were used to investigate the surface morphologies and the texture of the meter-long YBCO films. The end-to-end critical current $(I_c)$ of 63A/cm-width and the critical current density $(J_c)$of $0.9MA/cm^2$ with the thickness of $0.7{\mu}m$ were obtained in the 0.42m long coated conductor.

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