Bi-2223/Ag超导带材的失超传播速度研究  

Study on the quench propagation velocity of Bi-2223/Ag superconducting tapes

作　　者：张婕[1,2] 邵海成[3] 吴锐[1] 李海涛[1] 邵慧[1,2] 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]磁浮技术与磁浮列车教育部重点实验室,成都610031 [3]商丘师范学院数学系,商丘476000

出　　处：《低温与超导》2012年第6期25-28,63,共5页Cryogenics and Superconductivity

摘　　要：文中对超导带材的失超产生机理进行了详细分析,建立了其失超传播的计算模型。在此基础上,对Bi-2223/Ag高温超导带材失超传播进行了实验研究,用四引线法测得不同条件下其失超传播的U-t曲线,由此计算出Bi-2223/Ag超导带材的失超传播速度为0.4cm/s～1.98cm/s。实验结果表明:带材的失超传播速度与载流大小有关,与触发失超的能量无关,带材载流越大,失超传播得越快。This paper analyzed the quench mechanism of superconducting tapes,then the calculation model of its quench propagation was established.On this basis,the quench propagation of Bi-2223/Ag HTS tapes has been studied;under the condition of different ways,the U-t curve of tapes has been achieved through the measurement of four leads.After calculating,the quench propagation velocity of Bi-2223/Ag superconducting tapes was 0.4cm/s to 1.98cm/s.Experiment results showed that the quench propagation velocity of tapes was relevant to carrying current but was independent of trigger energy;the more carrying current was,the quickly quench propagated.

关 键 词：高温超导 失超 传播速度 触发能量 

分 类 号：TM26[一般工业技术—材料科学与工程]