Method of producing Pb-stabilized superconductor precursors and method of producing superconductor articles therefrom
Abstract
Metal oxide superconductor powder precursors are prepared in an aerosol pyrolysis process. A solution of the metal cations is introduced into a furnace at 600--1,000 C for 0.1 to 60 seconds. The process produces micron to submicron size powders without the usual loss of the lead stabilizer. The resulting powders have a narrow particle size distribution, a small grain size, and are readily converted to a superconducting composition upon subsequent heat treatment. The precursors are placed in a metal body deformed to form a wire or tape and heated to form a superconducting article. The fine powders permit a substantial reduction in heat treatment time, thus enabling a continuous processing of the powders into superconducting wire, tape or multifilamentary articles by the powder-in-tube process. 3 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 27721
- Patent Number(s):
- 5395821
- Application Number:
- PAN: 7-969,070
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 7 Mar 1995
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; SUPERCONDUCTING WIRES; FABRICATION; SUPERCONDUCTORS; PRECURSOR; CERAMICS
Citation Formats
Kroeger, D M, Hsu, H S, and Brynestad, J. Method of producing Pb-stabilized superconductor precursors and method of producing superconductor articles therefrom. United States: N. p., 1995.
Web.
Kroeger, D M, Hsu, H S, & Brynestad, J. Method of producing Pb-stabilized superconductor precursors and method of producing superconductor articles therefrom. United States.
Kroeger, D M, Hsu, H S, and Brynestad, J. Tue .
"Method of producing Pb-stabilized superconductor precursors and method of producing superconductor articles therefrom". United States.
@article{osti_27721,
title = {Method of producing Pb-stabilized superconductor precursors and method of producing superconductor articles therefrom},
author = {Kroeger, D M and Hsu, H S and Brynestad, J},
abstractNote = {Metal oxide superconductor powder precursors are prepared in an aerosol pyrolysis process. A solution of the metal cations is introduced into a furnace at 600--1,000 C for 0.1 to 60 seconds. The process produces micron to submicron size powders without the usual loss of the lead stabilizer. The resulting powders have a narrow particle size distribution, a small grain size, and are readily converted to a superconducting composition upon subsequent heat treatment. The precursors are placed in a metal body deformed to form a wire or tape and heated to form a superconducting article. The fine powders permit a substantial reduction in heat treatment time, thus enabling a continuous processing of the powders into superconducting wire, tape or multifilamentary articles by the powder-in-tube process. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 07 00:00:00 EST 1995},
month = {Tue Mar 07 00:00:00 EST 1995}
}