Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates
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.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States); Midwest Research Institute, Kansas City, MO (United States)
- DOE Contract Number:
- AC02-83CH10093
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5304534; A
- Application Number:
- PPN: US 7-432938
- OSTI ID:
- 5091785
- Resource Relation:
- Patent File Date: 7 Nov 1989
- Country of Publication:
- United States
- Language:
- English
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Method and apparatus for forming high-critical-temperature superconducting layers on flat and/or elongated substrates
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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