- 한류기용 Bi2212 튜브의 특성
- Bi2212 Tube Characteristics for SCFCL
- ㆍ 저자명
- 이남일,장건익,오일성,박권배,Lee. N.I.,Jang. G.E.,Oh. I.S.,Park. G.B.
- ㆍ 간행물명
- Progress in superconductivity
- ㆍ 권/호정보
- 2006년|7권 2호|pp.174-178 (5 pages)
- ㆍ 발행정보
- 한국초전도학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
For the practical application on SCFCL, Bi2212 tubes were fabricated by Centrifugal Forming Process (CFP) in terms of many different processing parameters. Typical sizes of tubes were 60, 150 mm in length and 2.5, 3.5, 4.8 mm in thickness. Initially powder was melted by induction heating. The optimum range of melting temperatures and preheating temperature were $1100^{circ}C$ and $500^{circ}C$ for 30min respectively. The nominal mold rotating speed was around 1000 RPM. A tube was annealed at $840^{circ}C$ for 80 hours in oxygen atmosphere. The tube of 50mm x 70mm x 2.5mm, rotated with 1000 RPM showed $I_c=890;A;and;T_c=80$. It was found that the tube processed with faster rate of mold rotation speed, thinner tube thickness and shorter tube length shows better electric characteristics as compared with the tube normally processed. In order to study the uniformity heat and fluid flow analysis tool was adopted along tube.