REBCO高温超导多芯带材的制备技术及性能研究进展  

Research Progress on Fabrication Technology and Properties of REBCO High Temperature Superconducting Multifilamentary Tape

作　　者：李佐光 张展 魏绍清 秦经刚 周超 Li Zuoguang;Zhang Zhan;Wei Shaoqing;Qin Jinggang;Zhou Chao(Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences,Hefei 230031 China;University of Science and Technology of China,Hefei 230026 China;Institute of Energy Hefei Comprehensive National Science Center,Hefei 230001 China)

机构地区：[1]中国科学院合肥物质科学研究院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026 [3]合肥综合性国家科学中心能源研究院,合肥230001

出　　处：《电工技术学报》2024年第21期6591-6603,共13页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(52077212)。

摘　　要：二代高温超导稀土钡铜氧(REBCO)带材因其具有优异的临界电流密度、高上临界场、高临界转变温度等优点,已逐渐应用在电力交通、科学仪器、聚变能源等高新技术领域。然而,REBCO高温超导带材具有极大的高宽比(超导带材宽度与厚度的尺寸比),使得其在应用过程中具有较大的交流损耗和较明显的屏蔽电流效应。为避免高宽比造成的影响,将REBCO带材中的超导层采用不同制备技术细分为平行且极窄的“芯丝”,从而将REBCO带材改性为REBCO“多芯带”,目前该领域研究已成为国内外研究者们的关注热点。该文综述了国内外在REBCO带材多芯制备方法与相关性能研究方面的研究进展。基于目前的制备技术,重点综述了商业化带材多芯改性技术(激光切割、机械切割和化学刻蚀)和REBCO多芯带直接成形技术(喷墨打印、机械划痕、两级轮廓衬底)的制备工艺技术对其性能的影响,总结并论述了目前REBCO多芯带材制备技术存在的主要问题及今后的发展方向。The second generation of high-temperature superconducting REBCO tapes has become the focus due to their excellent critical current density,high upper critical field,and high critical transition temperature.At present,it has been gradually applied in important fields such as electric power transportation,scientific instruments,fusion energy and other high-tech fields.However,large AC loss and obvious shielding current effect have been caused by the high aspect ratio(the dimensional ratio of the width to the thickness of the superconducting tape)of REBCO superconducting tapes in practical application.To mitigate the effects caused by the aspect ratio,researchers have adopted various fabrication techniques to divide the superconducting layer within the tape into multiple parallel and extremely narrow"filaments",thus modifying the REBCO tape into a REBCO"multifilamentary tape".This subdivision technique ensures that each individual superconducting filament has a smaller width,effectively reducing the AC losses caused by an excessive width-to-thickness ratio,as well as diminishing the shielding current effect.Therefore,the preparation of REBCO high-temperature superconducting multifilamentary tapes using various techniques has become a focal point of interest among researchers in this field both domestically and internationally.This article systematically reviews the research progress in the methods of preparing REBCO multi-filamentary tapes and related performance,both domestically and internationally.Based on current fabrication technologies,the first discusses techniques for modifying commercial REBCO tapes into multi-filamentary structures,including laser cutting,mechanical cutting,and chemical etching techniques.Laser cutting technology is noted for its high precision and stability,but it may introduce thermal stress during the cutting process,potentially affecting the superconducting properties of the tape.Mechanical cutting is a simple fabrication process,yet it may cause mechanical damage to the superconductin

关 键 词：REBCO高温超导多芯带材 制备技术 临界电流 交流损耗 屏蔽电流效应 

分 类 号：TM26[一般工业技术—材料科学与工程]