摘要
系统研究了Bi-2212导体的成材制备技术,通过优化粉末的热处理制度,获得了主相纯度高、各相分布均匀、粒度适宜和碳含量较低的装管粉末;并采用PIT和部分熔化相结合的线(带)材制备方法成功制备出临界电流密度(Jc)为205kA/cm2(4.2K,19T)的37芯带材和104kA/cm2(4.2K,19T)的37芯线材。
We successfully fabricated multifilamentary Bi-2212 wires and tapes by the powder-in-tube process combined with the partial melting-solidification process. Much work has been done to prepare ultrafine precursor powder with specific stoichiometry, excellent homogeneity, low impurity content and suitable phase assemblage. The optimization of the powder synthesis, the partial melting-solidification parameters, as well as the microstructure of filaments are given here. In short samples with current densities over 200 kA/cm^2 （4.2 K, 19 T） and 100 kA/cm^2 （4.2 K, 19 T） have been achieved for tapes and wires, respectively.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第A04期137-141,共5页
Rare Metal Materials and Engineering
基金
陕西省13115重大科技专项项目(2007ZDKG-45)
