한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)

한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지

Fabrication of TFA-MOD YBCO Films Using the $Y_2Ba_1Cu_1O_x$ and $Ba_3Cu_5O_8$ Powders

  • Lim, Jun-Hyung (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Jang, Seok-Hern (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Yoon, Kyung-Min (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Lee, Seung-Yi (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Joo, Jin-Ho (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Lee, Hoo-Jeong (School of Advanced Materials Science and Engineering, Sungkyunkwan University) ;
  • Kim, Chan-Joong (Nuclear Material Development Team, Korea Atomic Energy Research Institute)
  • 발행 : 2006.09.24
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초록

We fabricated YBCO film using a TFA-MOD method. In order to enhance the reaction kinetics and to control the formation of the second phases, $Y_2Ba_1Cu_1O_x$ and $Ba_3Cu_5O_8$ powders were used as precursors (the so called "211 process"). The films were calcined at $460^{\circ}C$ and then fired at $750^{\circ}C-800^{\circ}C$ in a 12.1% humidified $Ar-O_2$ atmosphere. We found that the microstructure varied significantly with the firing temperature. The textures of all of the films were similar and mainly biaxial. For the film fired at $775^{\circ}C$, the critical current was obtained to be 39 A/cm-width (corresponding critical current density is 2.0 MA/$cm^2$).

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