Superconducting connection between MgB2 superconducting wires via a compressed element made from HTS powder

US8420558B2 · kind B2 · utility

Assignee

• BRUKER EAS GMBH · DE

Inventors

• Felicitas Tenbrink · Alzenau, DE
• André Aubele · Hanau, DE
• Volker Gluecklich · Hammersbach, DE
• Bernd Sailer · Alzenau, DE
• Klaus Schlenga · Linkenheim-Hochstetten, DE

Key dates

• Filing date: Feb 18, 2010
• Grant date: Apr 16, 2013
• Expiry date: May 28, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49014
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method for connecting two or more superconducting wires (1, 2), each comprising at least one filament (3a-3b) that contains MgB2, wherein the superconducting connection is realized through exposed end regions (13) of the filaments (3a-3d) via a superconducting matrix, is characterized in that a bulk powder (4) of a high-temperature superconductor (HTS) powder with a transition temperature of Tc>40K is provided, into which the exposed end regions (13) of the filaments (3a-3d) project, wherein the Boron of the Boron powder of the bulk powder (4) is in amorphous modification, and the bulk powder (4) is compacted together with the projecting exposed end regions (13) of the filaments (3a-3d) to form a compressed element (8). The method improves the quality, in particular, the current carrying capacity and the critical magnetic field strength of a superconducting connection of two MgB2 wires.