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원심 용융 성형법을 이용한 BSCCO 튜브 제조
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취소
  • 원심 용융 성형법을 이용한 BSCCO 튜브 제조
  • Fabrication of BSCCO Tube by Centrifugal Melting Process
저자명
김기익,최정숙,오성룡,전병혁,김혜림,현옥배,김형섭,김찬중,Kim. Ki-Ik,Choi. Jung Suk,Oh. Sung Young,Jun. Byung-Hyuk,Kim. H.-R.,Hyun. Ok-Bae,Kim. Hyoung-Seo
간행물명
Progress in superconductivity
권/호정보
2005년|7권 1호|pp.97-101 (5 pages)
발행정보
한국초전도학회
파일정보
정기간행물|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

Bi-22l2 tubes for fault current limiter (FCL) were fabricated by centrifugal melting process. $SrSO_4$ ($10;wt.;\%$) was added to Bi-2212 powder to lower the melting point of Bi-22l2 and to improve the mechanical properties. The BSCCO powder was completely melted at $1300;^{circ}C$ using the RF furnace and then poured into rotating steel mold. The steel mold, preheated at $450;{circ}C{sim}550^{circ}C$ for 2 hour was rotated at $1020{sim}2520;RPM$. The solidified BSCCO tube was cooled down to room temperature in the furnace for 48 hours and separated from the mold between Bi-2212 and the mold. $ZrO_2$ solution was used to separate it easily from the mold and Ag tape was attached in the mold inner wall of the mold to analysis electrical property. Bi-22l2 tube was often cracked when the cooling rate was high. BSCCO tubes with $70{Phi}{ imes}100;mm,;50{Phi}{ imes}100;mm$ and $30{Phi}{ imes}150;mm$ size were fabricated by centrifugal melting process. The $J_{c}s$ of tubes with $50{Phi}{ imes}100;mm{ imes}4.0;t$ and $50{Phi}{ imes}100;mm{ imes}4.l;t$ were 178 and $74.2;A/cm^2$ at 77K, respectively. The processing condition for Bi-2212 tube fabrication was investigated using XRD and SEM analyses.