SBIR Phase II: Superconducting Wires for Magnet Applications

奥托9629502 这个第二阶段的小企业创新研究项目将开发一种新型的，低成本的工艺，用于制造商业上可行的磁体组件所需的坚固的超导导线，这些磁体组件能够在廉价制冷技术可达到的温度下运行。 高温超导导线在磁体部件中的大多数潜在的大规模商业应用需要在高达5 T的磁场中在高于50 K的温度下的高持续电流密度。 所提出的工艺是提议者为经济地生产坚固的HTS导线而开创的金属前体工艺和在5 T以上的场中产生50 K以上的最高证明临界电流密度的膜工艺的创新组合。 金属前体合金的固有可成形性为制造复杂的、几何精确的、化学均匀的前体提供了独特的机会，这些前体局部类似于膜工艺中使用的那些。 将开发并证明一种易于缩放的金属前体线制造工艺，该工艺将采用类似于薄膜工艺中使用的基材催化反应纹理化机制的反应纹理化机制。 输运性能目标符合在50 K以上运行的大规模HTS磁体应用的要求。 关键目标是在50 K或高于50 K时，整条导线的电流密度为10 kA/cm 2，并在相对于导线的任何方向上取向的5 T场中维持。 这种电线的主要产品将是更轻，更高效的电动机和发电机线圈，限流器线圈，SMES磁体和高效的电子电路电感器，所有这些都可以在50 K以上工作，在那里它们可以通过廉价的机械制冷来冷却。

Otto 9629502 This Phase II Small Business Innovation Research project will develop a novel, low-cost process for manufacturing the robust superconducting wires required for commercially viable magnet components capable of operating at temperatures that are accessible by inexpensive refrigeration technologies. Most of the potentially large-scale commercial applications of high temperature superconducting (HTS) wires in magnet components require high sustained current densities at temperatures above 50 K in magnetic fields up to 5 T. The proposed process is an innovative combination of the metallic precursor process pioneered by the proposer for the economical production of robust HTS wires, and film processes that produce the highest demonstrated critical current densities above 50 K in fields above 5 T. The inherent formability of metallic precursor alloys presents a unique opportunity for manufacturing complex, geometrically precise, chemically homogeneous precursors similar locally to those used in film processes. A readily scaleable metallic precursor wire manufacturing process will be developed and demonstrated that will employ reaction texturing mechanisms akin to substrate catalyzed reaction texturing mechanisms utilized in thin film processes. The transport property targets match the requirements for large scale HTS magnet applications operating above 50 K. The key target is a whole wire current density of 10 kA/cm2 at or above 50 K that is sustained in a 5 T field oriented at any direction relative to the wire. The main products enabled by this wire will be lighter and more efficient motor and generator coils, current limiter coils, SMES magnets, and efficient electronic circuit inductors all operating above 50 K where they can be cooled by inexpensive mechanical refrigeration.