• Title/Summary/Keyword: Bl-2223

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Characteristic Experiment of High-Tc Superconducting Power Supply Using by Bi-2223 Tape (Bi-2223 고온초전도선재를 이용한 고온초전도전원장치의 특성실험)

  • 안민철;김호민;윤용수;이응로;김태중;이상진;한태수;고태국
    • Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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    • 2001.02a
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    • pp.193-196
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    • 2001

  • This paper deals with the fabrication and characteristic experiment of a high-Tc superconducting(HTSC) power supply using by Bl-2223 tape. The purpose of this research is to apply real HTSC load. This system consists of two heaters, an electromagnet, a Bi-2223 solenoid and a Bi-2223 pancake load. In the experiment. 17sec and 8.5sec were used for pumping period. Mechanism of the superconducting switch is used for heater-trigger. In experiment, the pumping-current has reached about 1.2A.

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Superconducting properties through ceramic coating condition on high-Tc superconducting tapes (고온 초전 도체의 산화물 코팅 조건 변화에 따른 초전도 특성의 변화)

  • 이남진;하동우;하홍수;장현만;오상수;손명환;권영길;김상현;류강식
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.07a
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    • pp.218-221
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    • 2000

  • Currently, Bi-2223 HTS tape is capable of being fabricated in longer than 100m length by industrial processes. But there are some problems in heat treatment of the degree of longer than 100m tape, which is in term of volume occupied with specimen in furnace. The effects of ceramic coating with variable slurry states were studied in Bi-2223 high-temperature superconductor. The HTS tapes coated with oxide were prepared by using dip-coating method on slurry state. Critical current(I$_{c}$) of tapes coated with ceramic materials were equal with 11.5A at 77K after first heat treatment as different slurries. For final heat treatment, Critical current of HTS tapes coated with zirconia oxide mixed in PMMA and PVA organic solute were 20.8A at 77K. The breakdown voltage of HTS tapes coated with zirconia oxide were 3kV in air and 4~7kV in L$N_2$.>.

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