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首页> 外文期刊>Journal of Advanced Science >TFA-MOD法YBCO超伝導テープ線材を用いた電流リードの通電特性と熱侵入量の評価
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TFA-MOD法YBCO超伝導テープ線材を用いた電流リードの通電特性と熱侵入量の評価

机译：使用TFA-MOD方法YBCO超导带状导线评估电流引线的通电特性和热渗透

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Superconducting current leads have been prepared by the TFA-MOD processed YBCO tapes. YBCO tape is 5 mm in width, and about 120 μm in thickness. The YBCO superconducting layer, 1.5 μm in thickness, is formed on oxide buffer layers of GZO and CeO2 deposited on HastelloyTM substrate tapes. Transport current is supplied through Ag layer deposited on YBCO layers. Current leads No.1 and No.2 have been composed of 20 YBCO tapes soldered to Cu caps at both ends. The two stainless steel boards as the shunt have been attached to current lead at both sides. The YBCO tapes with critical current of about 80 A (current lead No.1) and 61 A (current lead No.2) at 77 K in self-field have been used for current lead No.1 and No.2, respectively. The transport current of 1,600 A in current lead No.1 and 1,200 A in current lead No.2 were stably carried in liquid nitrogen without any voltage appearance on each tapes. The heat leakage of current leads No.1 and No.2 composed of 20 YBCO tapes, two stainless steel boards and GFRP board between 77 K and 4.2 K is calculated to be 547 mW (342 mW/kA : current lead No.1), 535 mW (446 mW/kA : current lead No.2), which is much smaller than that of conventional Cu current lead (1.2 W/kA). The small heat leakage results from high current performance and low thermal conductivity in the present superconducting current leads.
机译：通过TFA-MOD处理的YBCO胶带已经准备了超导电流引线。 YBCO胶带的宽度为5毫米，厚度约为120微米。在沉积在HastelloyTM基材胶带上的GZO和CeO2的氧化物缓冲层上形成厚度为1.5μm的YBCO超导层。传输电流通过沉积在YBCO层上的Ag层提供。电流引线No.1和No.2由20条YBCO胶带组成，两端均焊接在Cu帽上。作为分流器的两块不锈钢板的两侧均已连接至电流引线。在自励磁场中，在77 K时，临界电流分别约为80 A（1号电流引线）和61A（2号电流引线）的YBCO胶带分别用于1号和2号电流引线。在液氮中稳定地传送了在1号电流引线中的1,600 A的输送电流和在2号电流引线中的1,200 A的输送电流，而在每个带上均没有任何电压出现。由20条YBCO胶带，两块不锈钢板和GFRP板组成的1号和2号电流引线在77 K和4.2 K之间的热泄漏计算为547 mW（342 mW / kA：1号电流引线） 535 mW（446 mW / kA：2号电流引线），比常规的Cu电流引线（1.2 W / kA）小得多。在当前的超导电流引线中，高电流性能和低热导率导致小的热泄漏。

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