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Title: 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.:
Lockheed Martin Energy Syst Inc
OSTI Identifier:
27721
Patent Number(s):
5,395,821
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 = {1995},
month = {3}
}