Superconducting wire

Patent metadata

Field	Value
Publication number	US-2017133127-A1
Application number	US-201515320935-A
Country	US
Kind code	A1
Filing date	Mar 16, 2015
Priority date	Jul 31, 2014
Publication date	May 11, 2017
Grant date	—

Abstract

A superconducting wire includes a multilayer stack and a covering layer (stabilizing layer or protective layer). The multilayer stack includes a substrate having a main surface and a superconducting material layer formed on the main surface. The covering layer (stabilizing layer or protective layer) is disposed on at least the superconducting material layer. A front surface portion of the covering layer (stabilizing layer or protective layer) located on the superconducting material layer (front surface portion of the stabilizing layer or upper surface of the protective layer) has a concave shape.

First claim

1 . A superconducting wire comprising:
a multilayer stack including a substrate having a main surface, and a superconducting material layer formed on the main surface; and a covering layer disposed on at least the superconducting material layer, the covering layer located on the superconducting material layer having a front surface portion in a concave shape.

2 . The superconducting wire according to claim 1 , wherein
in a cross section in a width direction of the substrate, a distance in a thickness direction of the substrate between an apex and a bottom of a region in the concave shape of the front surface portion is not less than 1 μm and not more than 100 μm.

3 . The superconducting wire according to claim 1 , wherein
in a cross section in a width direction of the substrate, the front surface portion is smaller in width than a region of the superconducting wire located opposite to the front surface portion.

4 . The superconducting wire according to claim 1 , wherein
a back surface portion of the superconducting wire located opposite to the front surface portion has one of a flat shape and a concave shape.

5 . The superconducting wire according to claim 1 , wherein
a back surface portion of the superconducting wire located opposite to the front surface portion is curved in a convex shape, the front surface portion is curved in a concave shape, and in a cross section in a width direction of the substrate, the back surface portion is larger in radius of curvature than the front surface portion.

6 . The superconducting wire according to claim 1 , wherein
in a cross section in a width direction of the substrate, the covering layer on an end of the superconducting material layer is larger in thickness than the stabilizing layer on a central portion of the superconducting material layer.

7 . A superconducting wire comprising:
a substrate having a main surface; and a superconducting material layer formed on the main surface, the superconducting material layer having a surface in a concave shape.

8 . The superconducting wire according to claim 7 , wherein
in a cross section in a width direction of the substrate, a distance in a thickness direction of the substrate between an apex and a bottom of a region in the concave shape of the surface of the superconducting material layer is not less than 1 μm and not more than 100 μm.

9 . A superconducting wire comprising:
a substrate having a main surface; and a superconducting material layer formed on the main surface, the main surface of the substrate having a concave shape.

10 . The superconducting wire according to claim 9 , wherein
in a cross section in a width direction of the substrate, a distance in a thickness direction of the substrate between an apex and a bottom of a region in the concave shape of the main surface of the substrate is not less than 1 μm and not more than 100 μm.

11 . The superconducting wire according to claim 9 , wherein
in a cross section in a width direction of the substrate, the main surface is smaller in width than a region of the substrate located opposite to the main surface.

12 . The superconducting wire according to claim 9 , wherein
a back surface of the substrate located opposite to the main surface has one of a flat shape and a concave shape.

13 . The superconducting wire according to claim 9 , wherein
a back surface of the substrate located opposite to the main surface is curved in a convex shape, the main surface is curved in a concave shape, and in a cross section in a width direction of the substrate, the back surface is larger in radius of curvature than the main surface.

Assignees

• Sumitomo Electric Industries

Inventors

• Yamaguchi Takashi
• Nagaishi Tatsuoki
• Konishi Masaya
• Ohki Kotaro
• Honda Genki
• Yoshihara Tatsuhiko

Classifications

• C01F17/32

  oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO · CPC title

• H01F6/06 Primary

  Coils, e.g. winding, insulating, terminating or casing arrangements therefor · CPC title

• H01B12/06 Primary

  Films or wires on bases or cores · CPC title

• C01P2006/40

  Electric properties · CPC title

• Y02E40/60

  Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment · CPC title