Microstructure and properties of Bi-2223/Ag/Ni tapes  

作　　者：Li Mingya Ye Chengli Liu Jun 

机构地区：[1]NE Univ Qinhuangdao, Sch Resources & Mat, Qinhuangdao 066004, Peoples R China

出　　处：《Rare Metals》2012年第6期556-559,共4页稀有金属（英文版）

基　　金：financially supported by the National High Technology Research and Development Program(863program)(No.2009AA03Z202);the Fundamental Research Funds for the Central Universities(No.N100423006and No.N110823001)

摘　　要：To reduce the production cost of Bi-2223 superconducting tapes, Bi-2223/Ag/Ni tapes were fabricated by the powder-in-tube process. The effect of heat treatment on the microstructure and critical current of the Bi-2223/Ag/Ni tapes were studied. The phase compositions of the samples were characterized using XRD. The microstructure was observed using SEM. Experimental results indicate that higher temperature is more conducive to the formation of Bi-2223 phase at an atmosphere of 8.5% O 2 . After the two-step heat treatment, the critical current of samples is about 67.5 A.

关 键 词：Bi-2223/Ag/Ni tapes heat treatment MICROSTRUCTURE critical current 

分 类 号：TM2[一般工业技术—材料科学与工程]