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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. 8 figures.

Inventors:
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States); Midwest Research Institute
OSTI Identifier:
5091785
Patent Number(s):
5304534 A
Application Number:
PPN: US 7-432938
Assignee:
Dept. of Energy, Washington, DC (United States) NREL; EDB-94-075928
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Resource Relation:
Patent File Date: 7 Nov 1989
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BISMUTH OXIDES; DEPOSITION; CALCIUM OXIDES; COPPER OXIDES; SILVER; STRONTIUM OXIDES; SUPERCONDUCTING WIRES; FABRICATION; HIGH-TC SUPERCONDUCTORS; SUPERCONDUCTING COMPOSITES; ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COMPOSITE MATERIALS; COPPER COMPOUNDS; ELEMENTS; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; WIRES; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 360601 - Other Materials- Preparation & Manufacture

Citation Formats

Ciszek, T.F. Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates. United States: N. p., 1994. Web.
Ciszek, T.F. Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates. United States.
Ciszek, T.F. Tue . "Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates". United States.
@article{osti_5091785,
title = {Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates},
author = {Ciszek, T.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. 8 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {4}
}