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Title: Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates

Abstract

An elongated, flexible superconductive wire or strip is fabricated by pulling it through and out of a melt of metal oxide material at a rate conducive to forming a crystalline coating of superconductive metal oxide material on an elongated, flexible substrate wire or strip. A coating of crystalline superconductive material, such as Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8, is annealed to effect conductive contact between adjacent crystalline structures in the coating material, which is then cooled to room temperature. The container for the melt can accommodate continuous passage of the substrate through the melt. Also, a second pass-through container can be used to simultaneously anneal and overcoat the superconductive coating with a hot metallic material, such as silver or silver alloy. A hollow, elongated tube casting method of forming an elongated, flexible superconductive wire includes drawing the melt by differential pressure into a heated tubular substrate.

Inventors:
 [1]
  1. Evergreen, CO
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
869241
Patent Number(s):
5304534
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; forming; high-critical-temperature; superconducting; layers; flat; elongated; substrates; flexible; superconductive; wire; strip; fabricated; pulling; melt; metal; oxide; material; rate; conducive; crystalline; coating; substrate; sr; cacu; annealed; effect; conductive; contact; adjacent; structures; cooled; temperature; container; accommodate; continuous; passage; pass-through; simultaneously; anneal; overcoat; hot; metallic; silver; alloy; hollow; tube; casting; drawing; differential; pressure; heated; tubular; flexible substrate; conducting layer; crystalline structures; metallic material; coating material; conductive material; metal oxide; differential pressure; oxide material; temperature superconducting; superconductive material; crystalline structure; hot metal; conductive metal; tubular substrate; superconducting layers; superconductive wire; silver alloy; superconducting layer; high-critical-temperature superconducting; superconductive coating; elongated tube; casting method; conductive coating; conductive contact; line structure; /505/

Citation Formats

Ciszek, Theodore F. Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates. United States: N. p., 1994. Web.
Ciszek, Theodore F. Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates. United States.
Ciszek, Theodore F. Sat . "Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates". United States. https://www.osti.gov/servlets/purl/869241.
@article{osti_869241,
title = {Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates},
author = {Ciszek, Theodore F},
abstractNote = {An elongated, flexible superconductive wire or strip is fabricated by pulling it through and out of a melt of metal oxide material at a rate conducive to forming a crystalline coating of superconductive metal oxide material on an elongated, flexible substrate wire or strip. A coating of crystalline superconductive material, such as Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8, is annealed to effect conductive contact between adjacent crystalline structures in the coating material, which is then cooled to room temperature. The container for the melt can accommodate continuous passage of the substrate through the melt. Also, a second pass-through container can be used to simultaneously anneal and overcoat the superconductive coating with a hot metallic material, such as silver or silver alloy. A hollow, elongated tube casting method of forming an elongated, flexible superconductive wire includes drawing the melt by differential pressure into a heated tubular substrate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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Works referenced in this record:

Fabrication of dense Ba 2 YCu 3 O 7−δ superconductor wire by molten oxide processing
journal, September 1987


High-critical-temperature superconductor made from glass
journal, April 1988


Magnetic measurements of superconducting glass‐ceramic fine rods in Bi 1 Ca 1 Sr 1 Cu 2 Al 0.5 O x prepared under a temperature gradient
journal, October 1989


High T C superconductors—composite wire fabrication
journal, July 1987


Tape Conductor Fabrication Processes for High- T c Ba 2 YCu 3 O 7- y
journal, March 1988


Improvement of the critical current density in the silver sheathed Bi‐Pb‐Sr‐Ca‐Cu‐O superconducting tape
journal, April 1989