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Title: Extrusion of metal oxide superconducting wire, tube or ribbon

Abstract

A process and apparatus for extruding a superconducting metal oxide composition YBa{sub 2}Cu{sub 3}O{sub 7-x} provides a wire (tube or ribbon) having a cohesive mass and a degree of flexibility together with enhanced electrical properties. Wire diameters in the range of 6--85 mils have been produced with smaller wires on the order of 10 mils in diameter exhibiting enhanced flexibility for forming braided, or multistrand, configurations for greater current carrying capacity. The composition for extrusion contains a polymeric binder to provide a cohesive mass to bind the particles together during the extrusion process with the binder subsequently removed at lower temperatures during sintering. The composition for extrusion further includes a deflocculent, an organic plasticizer and a solvent which also are subsequently removed during sintering. Electrically conductive tubing with an inner diameter of 52 mil and an outer diameter of 87--335 mil has also been produced. Flat ribbons have been produced in the range of 10--125 mil thick by 100--500 mil wide. The superconducting wire, tube or ribbon may include an outer ceramic insulating sheath co-extruded with the wire, tubing or ribbon.

Inventors:
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5002638
Patent Number(s):
PATENTS-US-A7571400
Application Number:
ON: DE92017009; PPN: US 7-571400
Assignee:
Dept. of Energy ANL; EDB-92-125791
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent Application
Resource Relation:
Patent File Date: 23 Aug 1990
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM OXIDES; EXTRUSION; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; SUPERCONDUCTING WIRES; YTTRIUM OXIDES; INVENTIONS; TUBES; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; FABRICATION; MATERIALS WORKING; OXIDES; OXYGEN COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; WIRES; YTTRIUM COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 665412 - Superconducting Devices- (1992-)

Citation Formats

Dusek, J.T. Extrusion of metal oxide superconducting wire, tube or ribbon. United States: N. p., 1990. Web.
Dusek, J.T. Extrusion of metal oxide superconducting wire, tube or ribbon. United States.
Dusek, J.T. Mon . "Extrusion of metal oxide superconducting wire, tube or ribbon". United States. https://www.osti.gov/servlets/purl/5002638.
@article{osti_5002638,
title = {Extrusion of metal oxide superconducting wire, tube or ribbon},
author = {Dusek, J.T.},
abstractNote = {A process and apparatus for extruding a superconducting metal oxide composition YBa{sub 2}Cu{sub 3}O{sub 7-x} provides a wire (tube or ribbon) having a cohesive mass and a degree of flexibility together with enhanced electrical properties. Wire diameters in the range of 6--85 mils have been produced with smaller wires on the order of 10 mils in diameter exhibiting enhanced flexibility for forming braided, or multistrand, configurations for greater current carrying capacity. The composition for extrusion contains a polymeric binder to provide a cohesive mass to bind the particles together during the extrusion process with the binder subsequently removed at lower temperatures during sintering. The composition for extrusion further includes a deflocculent, an organic plasticizer and a solvent which also are subsequently removed during sintering. Electrically conductive tubing with an inner diameter of 52 mil and an outer diameter of 87--335 mil has also been produced. Flat ribbons have been produced in the range of 10--125 mil thick by 100--500 mil wide. The superconducting wire, tube or ribbon may include an outer ceramic insulating sheath co-extruded with the wire, tubing or ribbon.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent Application:

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