| 用于限流器的Bi-2212超导筒的研制 |
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| 引用本文： | 孙晶,赵启明,吕朝阳,王轶楠,何砚发,李景会,王金星. 用于限流器的Bi-2212超导筒的研制[J]. 低温与超导, 2000, 28(4): 32-34 |
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| 作者姓名： | 孙晶 赵启明 吕朝阳 王轶楠 何砚发 李景会 王金星 |
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| 作者单位： | 东北大学理学院物理系,沈阳,110006 |
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| 基金项目： | 中国科学院资助项目，59777018， |
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| 摘 要： | 采用部分熔化法在流氧气氛的旋转炉中 ,以 Ag箔为衬 ,成功制得直径 60 mm的 Bi- 2 2 1 2超导圆筒。加热初始粉到部分熔融状态 ,然后再冷却到 855℃以形成超导相 ,在富 N2 气氛下退火 ,并且从 70 0℃开始在纯 N2 气氛中冷却 ,这种工艺可以得到较好机械强度和外型的筒。XRD图象表明 Bi- 2 2 1 2筒中主要相为 Bi- 2 2 1 2超导相。 Bi- 2 2 1 2筒的临界电流密度为 1 0 0 Acm-2 ,Ic约为1 0 A
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| 关 键 词： | Bi-2212超导筒 部分熔化法 故障电流限制器 |
| 修稿时间： | 2000-06-12 |
Fabrication of Bi-2212 Superconducting Rings for Fault Current Limiter Application |
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| Sun Jing,Zhao Qiming,Lü Chaoyang,Wang Yinan,He Yanfa,Li Jinghui,Wang Jinxing. Fabrication of Bi-2212 Superconducting Rings for Fault Current Limiter Application[J]. Cryogenics and Superconductivity, 2000, 28(4): 32-34 |
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| Authors: | Sun Jing Zhao Qiming Lü Chaoyang Wang Yinan He Yanfa Li Jinghui Wang Jinxing |
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| Abstract: | Bi-2212 superconducting rigns (60mm in diameter) were processed in a rotating furnace in flowing oxygen using Ag foil as the substrate. The powder was heated to the partial melt state, cooled to 855℃ to develop superconducting phase, annealed in N 2 rich atmosphere, and finally cooled in N 2 from 700℃. Rings with high mechanical strength and nice shape were achieved by this process. XRD studies suggest that the as-processed Bi-2212 rings mainly consist of Bi-2212 superconducting phases. The Bi-2212 rings show a J c of 100Acm -2 with I c of 100A. |
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| Keywords: | Bi-2212 superconducting ring Partial melt process Fault current limiter (FCL) |
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