Fabrication and properties of high J/sub c/ multifilamentary (Bi,Pb)-2223 tapes with Ag-alloy sheath
Fabrication and properties of high J/sub c/ multifilamentary (Bi,Pb)-2223 tapes with Ag-alloy sheath
复制标题
银合金护套高J/亚c/复丝(Bi,Pb)-2223带材的制备及性能
DOI：
10.1109/77.785060
复制
发表时间：
1999
影响因子：
1.8
通讯作者：
H.L. Zheng
中科院分区：
文献类型：
--
作者：
P.X. Zhang;H. Maeda;L. Zhou;C.S. Li;Z. Duan;H.L. Zheng
采用粉末装管（PIT）法制备了具有37根芯丝的（Bi，Pb）-2223带材。芯丝的包套采用银，带材的外鞘采用Ag - Mn - Ni合金。在具有Ag合金包套的轧制带材中实现了29000A/cm²（77K，0T）的高临界电流密度，此时带材的临界电流为81.5A，高于采用相同工艺制备的具有纯Ag包套的多芯丝带材。通过混合（Bi，Pb）-2212和CaCuO₂制备的前驱体粉末被认为有利于制备具有Ag合金包套的高Jₑ多芯丝带材。本工作对多芯丝带材的超导性能和微观结构特征进行了研究。
(Bi,Pb)-2223 tapes with 37 filaments have been fabricated by powder in tube (PIT) method. Silver was used for the sheath of filaments and the Ag-Mn-Ni alloy was used for the outer sheath of the tapes. A high critical current density of 29000A/cm/sup 2/ (77 K, 0 T) has been achieved in rolled tape with Ag-alloy sheath, in this case the critical current of the tapes is 81.5A, which is higher than that of multifilamentary tapes with pure Ag sheath prepared by the same process. The precursor powders prepared by mixing the (Bi,Pb)-2212 and CaCuO/sub 2/ has been considered to be beneficial for fabricating high J/sub c/ multifilamentary tapes with Ag-alloy sheath. The superconducting properties and microstructural characteristics of the multifilamentary tapes have been investigated in this work.