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Title: Simultaneous constraint and phase conversion processing of oxide superconductors

Abstract

A method of making an oxide superconductor article includes subjecting an oxide superconductor precursor to a texturing operation to orient grains of the oxide superconductor precursor to obtain a highly textured precursor; and converting the textured oxide superconducting precursor into an oxide superconductor, while simultaneously applying a force to the precursor which at least matches the expansion force experienced by the precursor during phase conversion to the oxide superconductor. The density and the degree of texture of the oxide superconductor precursor are retained during phase conversion. The constraining force may be applied isostatically.

Inventors:
 [1];  [2];  [3];  [4];  [4];  [5];  [6];  [4]
  1. Marlborough, MA
  2. Coventry, RI
  3. (Marlborough, MA)
  4. Madison, WI
  5. Jefferson, MA
  6. Roselle Park, NJ
Issue Date:
Research Org.:
American Superconductor Corporation (Westborough, MA)
Sponsoring Org.:
USDOE
OSTI Identifier:
921276
Patent Number(s):
6555503
Application Number:
09/665,882
Assignee:
American Superconductor Corporation (Westborough, MA)
Patent Classifications (CPCs):
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
DOE Contract Number:  
FG02-99ER82742
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Li, Qi, Thompson, Elliott D, Riley, Jr., Gilbert N., Hellstrom, Eric E, Larbalestier, David C, DeMoranville, Kenneth L, Parrell, Jeffrey A, and Reeves, Jodi L. Simultaneous constraint and phase conversion processing of oxide superconductors. United States: N. p., 2003. Web.
Li, Qi, Thompson, Elliott D, Riley, Jr., Gilbert N., Hellstrom, Eric E, Larbalestier, David C, DeMoranville, Kenneth L, Parrell, Jeffrey A, & Reeves, Jodi L. Simultaneous constraint and phase conversion processing of oxide superconductors. United States.
Li, Qi, Thompson, Elliott D, Riley, Jr., Gilbert N., Hellstrom, Eric E, Larbalestier, David C, DeMoranville, Kenneth L, Parrell, Jeffrey A, and Reeves, Jodi L. Tue . "Simultaneous constraint and phase conversion processing of oxide superconductors". United States. https://www.osti.gov/servlets/purl/921276.
@article{osti_921276,
title = {Simultaneous constraint and phase conversion processing of oxide superconductors},
author = {Li, Qi and Thompson, Elliott D and Riley, Jr., Gilbert N. and Hellstrom, Eric E and Larbalestier, David C and DeMoranville, Kenneth L and Parrell, Jeffrey A and Reeves, Jodi L},
abstractNote = {A method of making an oxide superconductor article includes subjecting an oxide superconductor precursor to a texturing operation to orient grains of the oxide superconductor precursor to obtain a highly textured precursor; and converting the textured oxide superconducting precursor into an oxide superconductor, while simultaneously applying a force to the precursor which at least matches the expansion force experienced by the precursor during phase conversion to the oxide superconductor. The density and the degree of texture of the oxide superconductor precursor are retained during phase conversion. The constraining force may be applied isostatically.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {4}
}

Works referenced in this record:

Computer-modelled deformation mechanism maps for hot uniaxially pressed Bi-2223 superconductor
journal, March 1997


Densification of grain-oriented high Tc superconducting Ba2Ln3+Cu3O7−x and Bi2Ca2Sr2Cu2O8 ceramics
journal, December 1989


Improvement of critical current density in the Bi-Pb-Sr-Ca-Cu-O system through hot isostatic pressing
journal, May 1990


Bulk texturing of prereacted Bi/Pb(2223) under triaxial stresses at room temperature
journal, December 1994


HIPped High Density Bi-(Pb)-Sr-Ca-Cu-O Superconductors Produced without Any Additional Treatment
journal, January 1989


The stability of high-T c phase in Bi1.6Pb0.4Sr2Ca2Cu3Oz compounds prepared by hot isostatic pressing
journal, January 1993


Preparation and superconducting properties of YBa2Cu4O8
journal, October 1989


Effect of hot pressing on the weak-link behaviour of Ag clad Bi based superconducting tapes
journal, March 1996


Overpressure processing of Ag-sheathed Bi-2212 tapes
journal, June 1997


Bulk YBa 2 Cu 3 O x superconductors through pressurized partial melt growth processing
journal, April 1992


Thick textured films of Bi-type ceramics by hot pressing
journal, March 1993


Hyperplasticity: Increased forming limits at high workpiece velocity
journal, February 1994


Significantly enhanced critical current density in Bi-2223/Ag multifilamentary tapes by hot pressing
journal, June 1999


Ag-sheathed Bi(Pb)SrCaCuO superconducting tapes
journal, May 1993


Densification of oxide superconductors by hot isostatic pressing
journal, July 1988


Effect of High-Temperature, High-Oxygen-Fugacity Annealing on the Stability of the (Bi,Pb)2Sr2Ca2Cu3O10 +-delta-type Compound
journal, September 1995


Stability of Bi2Sr2Ca1Cu2O8 +-delta Thick Films at Elevated Oxygen Pressures and Temperatures
journal, September 1995


Hot Isostatic Pressing (HIP) Densification Of Oxide Superconductors
conference, May 1988


Mechanical strength of hot-pressed Bi–Pb–Sr–Ca–Cu–O superconductor
journal, January 1992