内氧化对银基Bi-2223带材机械强度和载流性能的影响  

Effects of Internal Oxidation on Mechanical Strength of Silver and Silver Alloy Sheath and Critical Current Density of Bi- 2223 Tapes

作　　者：李永娣 余建军 郝清滨[2] 焦高峰[2] 徐晓燕[2] 刘国庆[2] 

机构地区：[1]西安诺博尔稀贵金属材料有限公司,西安710065 [2]西北有色金属研究院超导材料研究所,西安710016

出　　处：《西安文理学院学报（自然科学版）》2016年第3期78-82,共5页Journal of Xi’an University(Natural Science Edition)

基　　金：国家磁约束核聚变能发展研究专项(2015GB115001);国家磁约束核聚变能发展研究专项(2013GB110001)

摘　　要：通过拉伸强度、硬度、SEM实验和分析磁场下Bi-2223带材的载流性能,研究银及银合金内氧化特性和带材的载流特性,研究发现银及银合金的适当内氧化,可以较大幅度提高包套的强度,减小了由于银和超导粉末硬度差异造成的严重界面不光滑问题,进而改善了超导带材的织构,最终提高了带材的载流性能.The internal oxidation characteristic of silver and silver alloy and the current carrying characteristic of tape were studied by tensile, hardness and SEM tests and analysis of critical current density of Bi -2223 tape in magnetic field. The results show that with the appropriate internal oxidation, the strength of sheath improves greatly. The problem of the unsmooth inter- face due to the difference of hardness between silver and superconducting powders reduces. The texture of the superconducting tape improves. The critical current density of the tape improves ultimately.

关 键 词：银及银合金 内氧化 BI-2223带材 载流性能 

分 类 号：TG146.3[一般工业技术—材料科学与工程]