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Title: Melt processing of Bi--2212 superconductors using alumina

Abstract

Superconducting articles and a method of forming them, where the superconducting phase of an article is Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.y (Bi-2212). Alumina is combined with Bi-2212 powder or Bi-2212 precursor powder and, in order to form an intimate mixture, the mixture is melted and rapidly cooled to form a glassy solid. The glassy solid is comminuted and the resulting powder is combined with a carrier. An alternative to melting is to form the mixture of nanophase alumina and material having a particle size of less than about 10 microns. The powder, with the carrier, is melt processed to form a superconducting article.

Inventors:
 [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
872544
Patent Number(s):
5958842
Assignee:
Regents of Uniersity of California (Los Alamos, NM)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
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:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
melt; processing; bi-2212; superconductors; alumina; superconducting; articles; method; forming; phase; article; sr; cacu; combined; powder; precursor; form; intimate; mixture; melted; rapidly; cooled; glassy; solid; comminuted; resulting; carrier; alternative; melting; nanophase; material; particle; size; 10; microns; processed; rapidly cooled; particle size; precursor powder; superconducting article; melt processing; superconducting articles; superconducting phase; intimate mixture; rapidly cool; /505/

Citation Formats

Holesinger, Terry G. Melt processing of Bi--2212 superconductors using alumina. United States: N. p., 1999. Web.
Holesinger, Terry G. Melt processing of Bi--2212 superconductors using alumina. United States.
Holesinger, Terry G. Fri . "Melt processing of Bi--2212 superconductors using alumina". United States. https://www.osti.gov/servlets/purl/872544.
@article{osti_872544,
title = {Melt processing of Bi--2212 superconductors using alumina},
author = {Holesinger, Terry G},
abstractNote = {Superconducting articles and a method of forming them, where the superconducting phase of an article is Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.y (Bi-2212). Alumina is combined with Bi-2212 powder or Bi-2212 precursor powder and, in order to form an intimate mixture, the mixture is melted and rapidly cooled to form a glassy solid. The glassy solid is comminuted and the resulting powder is combined with a carrier. An alternative to melting is to form the mixture of nanophase alumina and material having a particle size of less than about 10 microns. The powder, with the carrier, is melt processed to form a superconducting article.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

Reactive nanophase oxide additions to melt-processed high-T/sub c/ superconductors
journal, June 1995


Directional isothermal growth of highly textured Bi 2 Sr 2 CaCu 2 O y
journal, August 1993


Formation of Bi-2212 superconducting whiskers from melt-quenched BSCCO containing alumina
journal, May 1994


Crystallization of Bi–Sr–Ca–Cu–O glasses in oxygen
journal, July 1992


Electrical transport and superconductivity in the Al2O3-Bi2Sr1.8Ca1.2Cu2Oy and MgO-Bi2Sr1.8Ca1.2Cu2Oy composites
journal, June 1993


Isothermal melt processing of Bi-2212 thick films
journal, February 1995


Al 2 O 3 additions for isothermal melt processing of Bi 2 Sr 2 CaCu 2 O y
journal, September 1996


Textured Thick Films of Bi 2 Sr 2 Ca 1 Cu 2 O x
journal, July 1990


Processing of Bi–Sr–Ca–Cu–O glasses using platinum and alumina crucibles
journal, August 1992


Isothermal melt processing of Bi2Sr2CaCu2Oy round wire
journal, October 1995


Effect of Al 2 O 3 additives on the formation of superconducting whiskers (2212 phase) in melt-quenched BiSrCaCu 2 O x
journal, July 1992


Growth rate of Bi-2212 superconducting whiskers from melt-quenched BSCCO containing alumina
journal, December 1994


Relationships between processing temperature and microstructure in isothermal melt processed Bi-2212 thick films
journal, June 1995


Improvement of J c of Ag-Sheathed Bi-2212 Tapes Using Melt-Growth Technique under Reduced Oxygen Partial Pressure
journal, October 1993