| 不同高压热处理的Bi-2212性能研究 |
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| 引用本文： | 杨东昇,陈煌,刘方,秦经刚.不同高压热处理的Bi-2212性能研究[J].低温与超导,2019,47(5):39-42. |
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| 作者姓名： | 杨东昇 陈煌 刘方 秦经刚 |
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| 作者单位： | 中国科学院等离子体物理研究所,合肥230031;安徽大学物质科学与信息技术研究院,合肥230601;中国科学院等离子体物理研究所,合肥230031;中国科学技术大学,合肥230026;中国科学院等离子体物理研究所,合肥,230031 |
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| 摘 要： | 高温超导材料Bi-2212在4.2 K具有优异的磁场载流性能。是目前高场下(>20 T)最具应用前景的高温超导材料之一。高压热处理工艺是决定Bi-2212超导线材性能的重要因素。通过分析不同压力强度(主要为3 MPa和5 MPa)下Bi-2212超导线材的线径、临界电流以及n值特性,研究了不同压强对热处理炉恒温区以及压强对超导材料性能的影响规律。结果表明,3 MPa压力下与5 MPa压力下热处理后对Bi-2212线材性能的影响相近,3 MPa的压强更容易实现,对设备要求更低。
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| 关 键 词： | BI-2212 高压热处理 线径 临界电流 n值 |
Study on the properties of Bi-2212 under different high pressure heat treatment |
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| Yang Dongsheng,Chen Huang,Liu Fang,Qin Jinggang.Study on the properties of Bi-2212 under different high pressure heat treatment[J].Cryogenics and Superconductivity,2019,47(5):39-42. |
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| Authors: | Yang Dongsheng Chen Huang Liu Fang Qin Jinggang |
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| Institution: | (Institute of Plasma Physics, CAS, Hefei230031, China;Institute of Physical Science and Information Tecnology, Anhui University, Hefei 230601 ,China;University of Science and Technology of China, Hefei 230026, China) |
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| Abstract: | At 4.2 K, the high-temperature superconducting material Bi-2212 has an outstanding current-carrying capacity in magnetic field. It is currently the most promising high temperature superconducting material under high field(>20 T).High-pressure heat treatment process is one of the important factors determining the performance of Bi-2212 superconducting wire.The wire diameters, critical current and n value of Bi-2212 superconducting wire under 3 MPa and 5 MPa pressure were studied.Confirmed the effect of different pressure on the constant temperature zone of the heat treatment furnace.The results show that the properties of Bi-2212 wire are similar after heat treatment at pressures of 3 MPa and 5 MPa.The pressure of 3 MPa is easier to realize and the requirements on equipment are lower. |
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| Keywords: | Bi-2212 High pressure heat treatment Wire diameter Critical current n value |
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