Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor
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 simu...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2004-09-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005 |
| _version_ | 1811201147518582784 |
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| author | Alexander Polasek Peter Majewski Eduardo Torres Serra Fernando Rizzo Fritz Aldinger |
| author_facet | Alexander Polasek Peter Majewski Eduardo Torres Serra Fernando Rizzo Fritz Aldinger |
| author_sort | Alexander Polasek |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-12T02:15:55Z |
| format | Article |
| id | doaj.art-a350d8f22c0c4cbd91cfc32c882ebe31 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-12T02:15:55Z |
| publishDate | 2004-09-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-a350d8f22c0c4cbd91cfc32c882ebe312022-12-22T03:52:15ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392004-09-017339340810.1590/S1516-14392004000300005Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductorAlexander PolasekPeter MajewskiEduardo Torres SerraFernando RizzoFritz AldingerThe 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005high temperature superconductorsBi-2223melting and crystallization |
| spellingShingle | Alexander Polasek Peter Majewski Eduardo Torres Serra Fernando Rizzo Fritz Aldinger Phase relations study on the melting and crystallization regions of the Bi-2223 high temperature superconductor Materials Research high temperature superconductors Bi-2223 melting and crystallization |
| title | 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_short | 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 |
| topic | high temperature superconductors Bi-2223 melting and crystallization |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000300005 |
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