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Enhancement of electro-mechanical behaviors in RE-Ba-Cu-O composite superconducting tapes with laser slit edges

文献类型：期刊论文

作者Guo, Chunjiang2; Chen, Sikan1; Liu, Xiao3; Shi, Jiangtao2; Wu, Yue2; Cheng, Chunsheng1; Zhu, Jiamin1; Zhang, Zhiwei1,2; Liu, Fang3; Li, Xiaofen2
刊名SUPERCONDUCTOR SCIENCE & TECHNOLOGY
出版日期2022-11-01
卷号35
ISSN号0953-2048
关键词2G-HTS tapes laser slit technique mechanical slit technique electro-mechanical behaviors tensile fatigue test compressive test
DOI10.1088/1361-6668/ac96d5
通讯作者Zhao, Yue(yuezhao@sjtu.edu.cn)
英文摘要The slit technique is an essential process for narrowing the second-generation high-temperature superconducting (2G-HTS) tapes. It is still very challenging to eliminate edge defects introduced during slitting. In this work, we developed a set of reel-to-reel laser slit (LS) equipment for narrowing 2G-HTS tapes using a femtosecond infrared laser. In comparison with the commonly used mechanical slit (MS) technique, the LS technique produced no cracks at the tape edges. Electro-mechanical behaviors of 2G-HTS tapes with MS and LS edges were compared in liquid nitrogen conditions. The results of the uniaxial tensile tests showed only a minor difference in irreversible tensile stress/strain of the two kinds of tapes. However, uniaxial tensile fatigue tests showed that the critical current (I (c)) retention of the LS tapes was about 14% higher than that of the MS tapes after 10(4) cycles (@ 77 K, sigma (max) = 0.8 sigma (y), and a stress ratio of 0.1). Moreover, U-Spring compressive tests revealed that no irreversible I (c) degradation occurred on the LS tapes under compressive strain up to -0.8%, with high reproducibility. On the contrary, the irreversible compressive strains of the MS tapes were rather scattered, ranging from -0.75% to -0.2%. Enhancement of electro-mechanical behaviors is strongly linked to fewer edge defects in the LS tapes. This research demonstrates significant advantages of the LS technique over the conventional MS technique, showing its promising prospects for demanding applications.
WOS关键词COATED CONDUCTORS ; STRAIN DEPENDENCE
资助项目National Key R&D Program of China of National Natural Science Foundation of China[2022YFE03150201] ; Scientific Research Program of Science and Technology commission of Shanghai Municipality[21XD1430700]
WOS研究方向Physics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000865595300001
资助机构National Key R&D Program of China of National Natural Science Foundation of China ; Scientific Research Program of Science and Technology commission of Shanghai Municipality
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129275]  
专题中国科学院合肥物质科学研究院
通讯作者Zhao, Yue
作者单位1.Shanghai Superconductor Technol Co Ltd, Shanghai 201203, Peoples R China
2.Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China
3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230000, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Chunjiang,Chen, Sikan,Liu, Xiao,et al. Enhancement of electro-mechanical behaviors in RE-Ba-Cu-O composite superconducting tapes with laser slit edges[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2022,35.
APA Guo, Chunjiang.,Chen, Sikan.,Liu, Xiao.,Shi, Jiangtao.,Wu, Yue.,...&Zhao, Yue.(2022).Enhancement of electro-mechanical behaviors in RE-Ba-Cu-O composite superconducting tapes with laser slit edges.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,35.
MLA Guo, Chunjiang,et al."Enhancement of electro-mechanical behaviors in RE-Ba-Cu-O composite superconducting tapes with laser slit edges".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 35(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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