Measurement of Thermal Expansion of Superconducting Wires at Cryogenic Temperature Based on Tensile Method
文献类型：会议论文
| 作者 | Xin, Canjie1; Wang, Xingzhe1; Guan, Mingzhi1,2; Zhou, Youhe1 |
| 出版日期 | 2015-02 |
| 关键词 | Superconducting composite wire Thermal expansion Cryogenic temperature Tensile method |
| 卷号 | 28 |
| 期号 | 2 |
| DOI | 10.1007/s10948-014-2762-2 |
| 页码 | 437-442 |
| 英文摘要 | The effects of variable cryogenic temperature on the thermal expansion are measured by tensile method for several commercial superconducting composite wires of NbTi/Cu, Nb3Sn/Cu, and high-temperature superconducting (HTS) Bi2212/Ag tapes. A variable temperature cryostat system is constructed to provide successive cooling environment from 300 to 77 K, and a cryogenic-type extensometer is utilized to measure the deformation of the superconducting wires arising from tensile and thermal loadings. In comparison with the mechanical deformation at room temperature, the corresponding thermal deformation at the variable cryogenic temperature is recorded and evaluated during stretching of the superconducting wires. The thermal expansion behavior of the composite wires and superconductor filaments is further captured. It shows that the thermal expansion of NbTi/Cu composite wire, NbTi filaments, Nb3Sn/Cu composite wires, and Nb3Sn filaments is almost linearly dependent upon the temperature, while those of HTS Bi2212/Ag tapes exhibit notable nonlinear features during cooling of the superconducting wires. In addition, based on the thermal expansion measured from room temperature to liquid nitrogen temperature, the thermal expansions at 4.2 K are extrapolated for low-temperature composite wires and their filaments, which are compared with the experiments using thermal methods in the existing literature. The results indicate that our variable temperature cryostat system and corresponding tensile method will be an easy way for measuring the thermal parameter of superconducting composite wires. |
| 会议录 | JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
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| 会议录出版者 | SPRINGER |
| 会议录出版地 | 233 SPRING ST, NEW YORK, NY 10013 USA |
| 语种 | 英语 |
| 资助项目 | National Key Project of Magneto-Constrained Fusion Energy Development Program[2013GB110002] |
| WOS研究方向 | Physics |
| WOS记录号 | WOS:000349350100032 |
| 源URL | [http://119.78.100.186/handle/113462/58170]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Xin, Canjie |
| 作者单位 | 1.Lanzhou Univ, Key Lab Mech Environm & Disaster Western China, Minist Educ China, Coll Civil Engn & Mech, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xin, Canjie,Wang, Xingzhe,Guan, Mingzhi,et al. Measurement of Thermal Expansion of Superconducting Wires at Cryogenic Temperature Based on Tensile Method[C]. 见:. |
入库方式： OAI收割
来源：近代物理研究所
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