Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor

Detalhes bibliográficos
Autor(a) principal: Polasek,Alexander
Data de Publicação: 2004
Outros Autores: Majewski,Peter, Serra,Eduardo Torres, Rizzo,Fernando, Aldinger,Fritz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005
Resumo: The melting and solidification behavior of Bi2Sr2Ca2Cu3 O10 (Bi-2223) precursors has been studied. Nominal compositions corresponding to excess of liquid, Ca2CuO3 and CuO have been investigated. Each sample was made by packing a precursor powder into a silver crucible, in order to approximately simulate the situation found in 2223 silver-sheathed tapes. The samples were partially melted and then slow-cooled, being quenched from different temperatures and analyzed through X-ray diffraction (XRD) and scanning electron microscopy (SEM/EDS). The precursors decomposed peritectically during melting, forming liquid and solid phases. Very long plates with compositions falling in the vicinity of the 2223 primary phase field formed upon slow-cooling. The 2223 phase may have been formed and the results suggest that long grains of this phase might be obtained by melting and crystallization if the exact peritectic region and the optimum processing conditions are found.
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spelling Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductorhigh temperature superconductorsBi-2223melting and crystallizationThe melting and solidification behavior of Bi2Sr2Ca2Cu3 O10 (Bi-2223) precursors has been studied. Nominal compositions corresponding to excess of liquid, Ca2CuO3 and CuO have been investigated. Each sample was made by packing a precursor powder into a silver crucible, in order to approximately simulate the situation found in 2223 silver-sheathed tapes. The samples were partially melted and then slow-cooled, being quenched from different temperatures and analyzed through X-ray diffraction (XRD) and scanning electron microscopy (SEM/EDS). The precursors decomposed peritectically during melting, forming liquid and solid phases. Very long plates with compositions falling in the vicinity of the 2223 primary phase field formed upon slow-cooling. The 2223 phase may have been formed and the results suggest that long grains of this phase might be obtained by melting and crystallization if the exact peritectic region and the optimum processing conditions are found.ABM, ABC, ABPol2004-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005Materials Research v.7 n.3 2004reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392004000300005info:eu-repo/semantics/openAccessPolasek,AlexanderMajewski,PeterSerra,Eduardo TorresRizzo,FernandoAldinger,Fritzeng2004-08-13T00:00:00Zoai:scielo:S1516-14392004000300005Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2004-08-13T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
title Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
spellingShingle Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
Polasek,Alexander
high temperature superconductors
Bi-2223
melting and crystallization
title_short Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
title_full Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
title_fullStr Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
title_full_unstemmed Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
title_sort Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
author Polasek,Alexander
author_facet Polasek,Alexander
Majewski,Peter
Serra,Eduardo Torres
Rizzo,Fernando
Aldinger,Fritz
author_role author
author2 Majewski,Peter
Serra,Eduardo Torres
Rizzo,Fernando
Aldinger,Fritz
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Polasek,Alexander
Majewski,Peter
Serra,Eduardo Torres
Rizzo,Fernando
Aldinger,Fritz
dc.subject.por.fl_str_mv high temperature superconductors
Bi-2223
melting and crystallization
topic high temperature superconductors
Bi-2223
melting and crystallization
description The melting and solidification behavior of Bi2Sr2Ca2Cu3 O10 (Bi-2223) precursors has been studied. Nominal compositions corresponding to excess of liquid, Ca2CuO3 and CuO have been investigated. Each sample was made by packing a precursor powder into a silver crucible, in order to approximately simulate the situation found in 2223 silver-sheathed tapes. The samples were partially melted and then slow-cooled, being quenched from different temperatures and analyzed through X-ray diffraction (XRD) and scanning electron microscopy (SEM/EDS). The precursors decomposed peritectically during melting, forming liquid and solid phases. Very long plates with compositions falling in the vicinity of the 2223 primary phase field formed upon slow-cooling. The 2223 phase may have been formed and the results suggest that long grains of this phase might be obtained by melting and crystallization if the exact peritectic region and the optimum processing conditions are found.
publishDate 2004
dc.date.none.fl_str_mv 2004-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392004000300005
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.7 n.3 2004
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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