Measurement of Thermal Expansion of Superconducting Wires at Cryogenic Temperature Based on Tensile Method

doi:10.1007/s10948-014-2762-2

	Measurement of Thermal Expansion of Superconducting Wires at Cryogenic Temperature Based on Tensile Method
	Xin, Canjie 1; Wang, Xingzhe 1; Guan, Mingzhi 1,2; Zhou, Youhe 1
刊名	JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
	2015-02-01
卷号	28 页码:437-442
关键词	Superconducting Composite Wire Thermal Expansion Cryogenic Temperature Tensile Method
ISSN号	1557-1939
DOI	10.1007/s10948-014-2762-2
文献子类	Article
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.
WOS关键词	BEHAVIOR
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000349350100032
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/50053]
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[J]. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,2015,28:437-442.
APA	Xin, Canjie,Wang, Xingzhe,Guan, Mingzhi,&Zhou, Youhe.(2015).Measurement of Thermal Expansion of Superconducting Wires at Cryogenic Temperature Based on Tensile Method.JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,28,437-442.
MLA	Xin, Canjie,et al."Measurement of Thermal Expansion of Superconducting Wires at Cryogenic Temperature Based on Tensile Method".JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM 28(2015):437-442.