SUPERCONDUCTING JOINTS BETWEEN Bi2212 ROUND AND RECTANGULAR WIRE
OwnerAlexander Ottoinventor
Life of this patent
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Abstract
A high temperature superconducting joint, a high temperature superconducting wire or tape comprising a high temperature superconducting joint, or an MRI or NMR machine comprising a high temperature superconducting wire or tape comprising a high temperature superconducting joint. Also, methods for producing a high temperature superconducting joint for use in a superconducting wire or an MRI or NMR machine, or other high field generating coil.
Claims20
A high temperature superconducting joint comprising:
- two tapered Bi2212 wire ends, each of the ends comprising an angle of less than about twenty degrees relative to the longitudinal axis of each of the wires;
- an overlap region between the two wire ends;
- a gap between the wire ends within the overlap region, an average thickness of the gap being less than about 100 micrometers;
- wherein the gap contains aligned Bi2212 grains;
- and
- a silver over-layer encapsulating the wire ends, the overlap region, and the gap, the silver over-layer comprising from about 0.05 millimeters (mm) to about 2 mm in thickness.
A magnetic resonance imaging (MRI) machine or Nuclear magnetic resonance (NIVIR) machine comprising:
- a high temperature superconducting wire or tape comprising:
- at least one high temperature superconducting joint, the joint comprising:
- two tapered Bi2212 wire or tape ends, each of the ends comprising an angle of less than about twenty degrees relative to the longitudinal axis of each of the wires;
- an overlap region between the two wire or the tape ends;
- a gap between the wire or the tape ends within the overlap region, an average thickness of the gap being less than about 100 micrometers;
- wherein the gap contains aligned Bi2212 grains;
- and
- a silver over-layer encapsulating the wire ends, the overlap region, and the gap, the silver over-layer comprising from about 0.05 millimeters (mm) to about 2 mm in thickness.
A method for producing a high temperature superconducting joint, the method comprising:
- tapering two Bi2212 wire ends such that each of the ends comprises an angle of less than about twenty degrees relative to the longitudinal axis of each of the wires;
- overlapping the wire ends, forming an overlap region between the two wire ends;
- placing the wire ends such that there is a gap between the wire ends within the overlap region, an average thickness of the gap being less than about 100 micrometers;
- filling the gap with Bi2212 liquid by wetting during melt texturing of Bi2212 grains, thereby forming aligned Bi2212 grains;
- and
- encapsulating the wire ends, the overlap region, and the gap, with a silver over-layer, the silver over-layer comprising from about 0.05 millimeters (mm) to about 2 mm in thickness.
Dependencies are inferred from the claim text.