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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)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
869241
Patent Number(s):
US 5304534
Assignee:
United States of America as represented by United States (Washington, DC) NREL
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. doi:. 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 = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}

Patent:

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