SBIR Phase I: An Advanced Method to Manufacture Continuous Reacted Lengths of BSCCO-2212 Wires

*9761515 Sengupta这个小型企业创新研究第一阶段项目将探索一种使用连续热处理来制造具有微米级细丝的BSCCO-2212线的工艺。尽管高温超导(HTS)线材和带材已经取得了稳步进展，但它们还没有完全商业化。这一创新有望生产出在成本和性能上与Nb-TiN化合物(Nb3Sn)线材具有竞争力的BSCCO-2212长丝。第一阶段将展示用连续热处理方法制造高性能多芯BSCCO-2212银(银)合金护套线材的成本效益，线材直径为2-4微米。第一阶段将侧重于适合制造2-4微米细丝的粉末的最佳粒度和分布。将确定生产机械均匀线材所需的拉拔参数。温度梯度和通过率将被优化以获得所需的性能。第二阶段将寻求优化工艺参数和制造长(200-500米)多丝导线。高性能多丝BSCCO-2212线材有望在新一代高场磁体或磁体插件的生产中得到商业应用，这些磁体或磁体插件可在超过20特斯拉的磁场下工作。这些超高场磁体将对高能物理、高级磁共振成像(MRI)和中子磁共振(NMR)分析以及超导磁能存储(SMES)和微型SMES等储能设备的进一步发展产生重大影响。***

*** 9761515 Sengupta This Small Business Innovation Research (SBIR) Phase I project will explore a process that uses continuous heat treatment for manufacturing BSCCO-2212 wire with micron-sized filaments. Although steady progress has been achieved in high temperature superconductor (HTS) wires and tapes, they are not fully commercialized. This innovation is expected to produce long multifilamentary BSCCO-2212 wire competitive in cost and performance with niobium tin compound (Nb3Sn) wire. Phase I will demonstrate the cost-effective fabrication of high-performance multifilamentary BSCCO-2212 silver (Ag) alloy sheathed wire with filament diameters of 2-4 microns by using continuous heat treatment. Phase I will focus on the optimum particle size and distribution of powders suitable for fabrication of wires with 2-4 micron filaments. Drawing parameters to produce mechanically uniform wires without will be determined. The temperature gradient and the pass rate will be optimized to achieve desired properties. Phase II would pursue optimizing process parameters and fabrication of long-length (200-500 meter) multifilamentary wires. Commercial application of high-performance multifilamentary BSCCO-2212 wire is expected in production of a new generation of high-field magnets or magnet inserts which may operate at fields in excess of 20 Tesla. These ultra-high field magnets would significantly impact further development of high energy physics, advanced magnetic resonance imaging (MRI) and neutron magnetic resonance (NMR) analysis, and energy storage devices, e.g., superconducting magnetic energy storage (SMES) and micro SMES. ***