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자료유형
학술대회자료
저자정보
Oh, S.S. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute) Ha, D.W. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute) Kim, S.C. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute) Bae, S.W. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute) Kwon, Y.K. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute) Ryu, K.S. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute) Ha, H.S. (Applied Superconductivity Research Lab., Korea Electrotechnology Research Institute)
저널정보
한국초전도학회 한국초전도학회 High Temperature Superconductivity 한국초전도학회 2000년도 High Temperature Superconductivity Vol.X
발행연도
2000.1
수록면
276 - 279 (4page)

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When high temperature superconducting tapes is fabricated using the PIT (Powder In Tube) method, the length of HTS tapes is increased more than 500 ${\sim}$ 1,000 times of initial powder packed billet. On mechanical processing, heterogeneous properties between the ceramic superconducting core and Ag/Ag alloy sheath occur the non-uniformity deformation as like sausaging that deteriorate the critical current properties of HTS tapes. In this study, we investigated the workability of Bi-2223/Ag/Ag alloy sheath tapes fabricated by the PIT method involving a number of different mechanical processes, multi drawing and rolling. In order to obtain the high critical current density and high uniformity of Bi-2223/Ag sheath tapes, the influences of powder packing density, drawing die angle and rolling parameters were studied. We found that the roll diameter is an important variable in the rolling process, as critical current of tapes rolled using 250 mm rolls was higher than that using 150 mm rolls.

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