发明公开
EP1039483A1 OXIDE SUPERCONDUCTING WIRE, SOLENOID COIL, MAGNETIC FIELD GENERATOR, AND METHOD OF PRODUCING OXIDE SUPERCONDUCTING WIRE
审中-公开
OXYD-SUPRALEITED DRAHT，SPULE，MAGNETFELDGATERATOR，UND HERSTELLUNGSVERFAHRENFÜROXYD-SUPRALEITED DRAHT
- 专利标题： OXIDE SUPERCONDUCTING WIRE, SOLENOID COIL, MAGNETIC FIELD GENERATOR, AND METHOD OF PRODUCING OXIDE SUPERCONDUCTING WIRE
- 专利标题（中）： OXYD-SUPRALEITED DRAHT，SPULE，MAGNETFELDGATERATOR，UND HERSTELLUNGSVERFAHRENFÜROXYD-SUPRALEITED DRAHT
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申请号： EP98959138.3申请日： 1998-12-09
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公开(公告)号： EP1039483A1公开(公告)日： 2000-09-27
- 发明人: TANAKA, Kazuhide, Hitachi, Ltd. , OKADA, Michiya, Hitachi, Ltd. , FUKUSHIMA, Keiji, Hitachi, Ltd. , WAKUDA, Tsuyoshi, Hitachi, Ltd.
- 申请人： Hitachi, Ltd.
- 申请人地址： 6 Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： 6 Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
- 代理机构： Beetz & Partner Patentanwälte
- 优先权： JP33963097 19971210
- 国际公布： WO9930333 19990617
- 主分类号： H01B12/10
- IPC分类号： H01B12/10
摘要：
The cross section of a wire is round and is composed of several units, each consisting of tape-like superconductors laminated in an approximately rhombic shape, which are arranged such that they form a hexagon as a whole.
Oxide superconducting tape wires each consisting of a plurality of oxide superconducting filaments are arranged in rotational symmetry to a core. The oxide superconducting filaments have the cross section such that the average thickness is 3 to 20 µm and the average aspect ratio is larger than 2 and smaller than 10. A step of arranging the oxide superconducting tape-like wires in rotational symmetry is accomplished when the multi-core tape-like wires are packed in a third metal pipe which becomes a metal sheath later.
Since the multi-core tape wires having oxide superconducting filaments are arranged in rotational symmetry, the oxide superconductor in the oxide superconducting filaments permits its c axis to orient in various directions. This makes it possible toss prevent the critical current from decreasing irrespective of the direction in which the magnetic field is applied and to increase the critical current density (Jc) because the oxide superconducting filament has an optimal size. The oxide superconductor should be a bismuth-based oxide superconductor, preferably be the one which has a composition of Bi 2 Sr 2 Ca 1 Cu 2 O x .
Oxide superconducting tape wires each consisting of a plurality of oxide superconducting filaments are arranged in rotational symmetry to a core. The oxide superconducting filaments have the cross section such that the average thickness is 3 to 20 µm and the average aspect ratio is larger than 2 and smaller than 10. A step of arranging the oxide superconducting tape-like wires in rotational symmetry is accomplished when the multi-core tape-like wires are packed in a third metal pipe which becomes a metal sheath later.
Since the multi-core tape wires having oxide superconducting filaments are arranged in rotational symmetry, the oxide superconductor in the oxide superconducting filaments permits its c axis to orient in various directions. This makes it possible toss prevent the critical current from decreasing irrespective of the direction in which the magnetic field is applied and to increase the critical current density (Jc) because the oxide superconducting filament has an optimal size. The oxide superconductor should be a bismuth-based oxide superconductor, preferably be the one which has a composition of Bi 2 Sr 2 Ca 1 Cu 2 O x .
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