Superconductive elements containing copper inclusions, and a composite and a method for their production
AssigneeBruker BioSpin GmbH
InventorsRené Flükiger, Daniel Eckert
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Abstract
The invention relates to a composite (1), comprising a Cu—Sn bronze matrix (2) and filaments (3) surrounded by the bronze matrix (2), wherein the filaments (3) contain niobium (═Nb) or a Nb alloy, characterized in that the filaments (3) contain between 0.3% and 20% of volume of copper (═Cu) substructures (4), which are distributed within the Nb or the Nb alloy. The composite can be used to produce a superconducting element with the bronze route which has an improved critical current density.
Claims16
A composite for producing a superconductive element, the composite comprising:
- filaments containing niobium (═Nb) or a Nb alloy;
- a Cu—Sn bronze matrix surrounding the filaments;
- and 0.3% and 20% volume of copper (═Cu) substructures distributed within said Nb or said Nb alloy, wherein said Nb or Nb alloy containing filaments have a shape of an elongated hollow pipe, an inner surface of said hollow pipe being in close contact with an inner bronze core and an outer surface of said hollow pipe being in close contact with a surrounding bronze matrix, said inner bronze core containing a core of Ta or Ta alloy, wherein said Cu substructures have a size between 5 and 100 nm.
The composite of claim', wherein said filaments comprise Nb3Sn.
Dependencies are inferred from the claim text.