MgB_2线带材工艺及性能研究进展  

Research Progress of the Processing and Properties of MgB_2 Wires and Tapes

作　　者：刘浩然 杨芳[2] 王庆阳[2] 熊晓梅[2] 冯建情[2] 李成山[2] 周廉[1,2] Liu Haoran1,2, Yang Fang2, Wang Qingyang2, Xiong Xiaomei2, Feng Jianqing2, Li Chengshan2, Zhou Lian1,2(1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi＇an 710072, China） （2. Northwest Institute for Nonferrous Metal Research, Xi＇an 710016, China)

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2018年第3期1020-1024,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51772250);国家高技术研究发展计划("863"计划)(2014AA032701);陕西省自然基金项目(2014JQ6198;2014JM2-5060)

摘　　要：MgB_2线带材的加工经历了近15年的研究与发展,生产出的线带材可以在制冷机、较低磁场下使用,另外生产MgB_2线带材的原材料相对低廉,应用前景十分广泛。本文从MgB_2传统线带材加工和后续工艺方法的优化出发,概述了MgB_2线带材研究的进展,详细介绍了内部镁扩散法,即用中心镁棒代替传统镁粉,使用铜镍材料为包套,钽或铌为阻隔层并与镁之间填充硼粉,热处理后得到致密的MgB_2相。论述了未来MgB_2线带材加工的研究重点。MgB2 wires and tapes have been well developed during the past 15 years. They can be used in liquid hydrogen and low magnetic field, which have broad applicability in the future due to their cheap raw material. In this paper we review the traditional processing of MgB2 wires and tapes. The method of internal magnesium diffusion is introduced in which a pure magnesium rod is placed at the center of copper sheath and niobium or tantalum barrier layer, and the space between magnesium rod and barrier layer is filled with boron powder. We can get the high density MgB2 layer after heat treatment. Finally, we discuss the key point of fabricating MgB2 tapes and wires in the future.

关 键 词：MGB2 线带材 超导电性 

分 类 号：TM26[一般工业技术—材料科学与工程]