Methods for making low resistivity joints

Patent metadata

Field	Value
Publication number	US-9287485-B2
Application number	US-201213415949-A
Country	US
Kind code	B2
Filing date	Mar 9, 2012
Priority date	Mar 30, 2007
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

Method for joining wires using low resistivity joints is provided. More specifically, methods of joining one or more wires having superconductive filaments, such as magnesium diboride filaments, are provided. The wires are joined by a low resistivity joint to form wires of a desired length for applications, such in medical imaging applications.

First claim

The invention claimed is:

1. A method of joining wires, the method comprising:
introducing a magnesium diboride joint material to an end of a first wire and an end of a second wire at a joint area, wherein at least one of the first and second wires comprises superconductive magnesium diboride filaments, and wherein the magnesium diboride joint material comprises a solid joint material having bore holes formed therein;
stripping the ends of each of the first and second wires to expose an extended portion of the superconductive magnesium diboride filaments of each of the first and second wires;
inserting the extended portion of the superconductive magnesium diboride filaments of each of the first and second wires into the bore holes; and
affecting the joint area such that the end of the first wire and the end of the second wire are electrically and mechanically coupled through the magnesium diboride joint material.

2. The method, as set forth in claim 1 , wherein each of the first and second wires comprises the superconductive magnesium diboride filaments.

3. The method, as set forth in claim 1 , wherein affecting the joint area comprises heating the joint area to sinter the superconductive magnesium diboride filaments of each of the first and second wires and the magnesium diboride joint material.

4. The method, as set forth in claim 1 , comprising:
preparing the end of the first wire; and
preparing the end of the second wire, before introducing the magnesium diboride joint material.

5. The method, as set forth in claim 1 , wherein stripping the ends of the first and second wires comprises stripping a cladding material to expose the extended portion of the superconductive magnesium diboride filaments of each of the first and second wires.

6. The method, as set forth in claim 1 , wherein the magnesium diboride joint material is doped.

7. The method, as set forth in claim 1 , wherein introducing a magnesium diboride joint material comprises disposing a composite material comprising magnesium diboride and at least one other material on the joint area.

8. The method, as set forth in claim 7 , wherein the at least one other material comprises a superconductor.

Assignees

• Marte Judson Sloan
• Huang Xianrui
• Laskaris Evangelos Trifon
• Knudsen Bruce Alan
• Raber Thomas Robert
• Zabala Robert John
• Bray James William
• Thompson Paul Shadforth
• Loureiro Sergio Paulo Martins
• Johnson Curtis Alan
• Decarr Sylvia Marie
• Gen Electric

Inventors

• Marte Judson Sloan
• Huang Xianrui
• Laskaris Evangelos Trifon
• Knudsen Bruce Alan
• Raber Thomas Robert
• Zabala Robert John
• Bray James William
• Thompson Paul Shadforth
• Loureiro Sergio Paulo Martins
• Johnson Curtis Alan
• Decarr Sylvia Marie

Classifications

• H01L39/02 Primary

  Electricity · mapped topic

• H01R13/03

  characterised by the material, e.g. plating, or coating materials · CPC title

• Y10T29/49194

  Assembling elongated conductors, e.g., splicing, etc. · CPC title

• Y10T29/49014

  Superconductor · CPC title

• H01R4/68 Primary

  Connections to or between superconductive connectors · CPC title