Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2003.07a
- /
- Pages.585-588
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- 2003
Properties of Bi-2223/Ag HTS tapes prepared using powders of varying lead content
Pb 함량을 달리한 전구체 분말에서의 Bi-2223/Ag 초전도 테이프의 특성 변화
-
Ha, Dong-Woo
(KERI, Applied Superconductivity Group)
;
- Yang, Joo-Saeng (KERI, Applied Superconductivity Group) ;
- Hwang, Sun-Yuk (KERI, Applied Superconductivity Group) ;
-
Ha, Hong-Soo
(KERI, Applied Superconductivity Group)
;
-
Oh, Sang-Soo
(KERI, Applied Superconductivity Group)
;
- Lee, En-Yong (KERI, Applied Superconductivity Group) ;
-
Kwon, Young-Kil
(KERI, Applied Superconductivity Group)
-
하동우
(한국전기연구원 초전도응용연구그룹)
;
- 양주생 (한국전기연구원 초전도응용연구그룹) ;
- 황선역 (한국전기연구원 초전도응용연구그룹) ;
-
하홍수
(한국전기연구원 초전도응용연구그룹)
;
-
오상수
(한국전기연구원 초전도응용연구그룹)
;
- 이언용 (한국전기연구원 초전도응용연구그룹) ;
-
권영길
(한국전기연구원 초전도응용연구그룹)
- Published : 2003.07.10
Abstract
Bi-2223 superconducting wires were fabricated by stacking, drawing process with different precursor powders and different heat-treatment histories. The precursor powders were 2 kinds of Pb content. And a part of the tapes were experienced pre-annealing process which caused tetragonal structure of Bi-2212 phase to orthorhombic structure of it was during drawing process. We confirmed the transformation of Bi-2212 phase from tetragonal structure to orthorhombic structure and reduction of second phases. AC magnetization analysis were performed in order to investigate the fraction of Bi-2223 phase in Bi-2223/Ag HTS tape. The cross sections of 55 filaments and 61 filaments were investigated after rolled in order to understand deformation mechanism of superconducting cores. We could achieve best Ic of 70 A class at the Bi-2223/Ag tape using low Pb content of precursor powder and experienced pre-annealing process. AC magnetization analysis was useful to investigate the fraction of Bi-2223 phase in the Bi-2223/Ag tape.