公开(公告)号：WO2015175064A2

公开(公告)日：2015-11-19

申请号：PCT/US2015016431

申请日：2015-02-18

Applicant: UNIV OHIO STATE ,  HYPER TECH RES INC

Inventor： XU XINGCHEN ,  SUMPTION MICHAEL D ,  PENG XUAN

IPC: H01B1/08

CPC classification number: H01B12/10 ,  B22F5/12 ,  B22F7/04 ,  C22C1/0491 ,  C22C32/0031 ,  C22F1/18 ,  H01B13/0016 ,  H01F6/06 ,  H01L39/14 ,  H01L39/2409

Abstract: Disclosed herein are superconducting wires. The superconducting wires can comprise a metallic matrix and at least one continuous subelement embedded in the matrix. Each subelement can comprise a non-superconducting core, a superconducting layer coaxially disposed around the non-superconducting core, and a barrier layer coaxially disposed around the superconducting layer. The superconducting layer can comprise a plurality of Nb3Sn grains stabilized by metal oxide particulates disposed therein. The Nb3Sn grains can have an average grain size of from 5 nm to 90 nm (for example, from 15 nm to 30 nm). The superconducting wire can have a high-field critical current density (J c ) of at least 5,000 A/mm2 at a temperature of 4.2 K in a magnetic field of 12 T. Also described are superconducting wire precursors that can be heat treated to prepare superconducting wires, as well as methods of making superconducting wires.

Abstract translation: 这里公开了超导线。 超导线可以包括金属基体和嵌入基质中的至少一个连续子元件。 每个子元件可以包括非超导芯，同轴地设置在非超导芯周围的超导层，以及同轴地设置在超导层周围的阻挡层。 超导层可以包括由设置在其中的金属氧化物颗粒稳定的多个Nb 3 Sn颗粒。 Nb 3 Sn粒子的平均粒径可以为5nm〜90nm（例如15nm〜30nm）。 在12T的磁场中，超导线可以在4.2K的温度下具有至少5,000A / mm 2的高场临界电流密度（J c）。还描述了可以进行热处理以制备的超导线前体 超导线，以及制造超导线的方法。