Zobrazeno 1 - 10
of 36
pro vyhledávání: '"M.B. Lisboa"'
Publikováno v:
Matéria (Rio de Janeiro) v.16 n.4 2011
Matéria (Rio de Janeiro. Online)
instacron:RLAM
Matéria (Rio de Janeiro. Online)
instacron:RLAM
O estudo visou a determinação das causas da falha de um isolador polimérico composto, empregado em uma linha de transmissão (LT) de 138kV. O trabalho foi desenvolvido seguindo a metodologia recomendada para análise de falhas, envolvendo caracter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d096e6cb7cac60957be5ab765a6807a8
https://doi.org/10.1590/s1517-70762011000400002
https://doi.org/10.1590/s1517-70762011000400002
Publikováno v:
Matéria (Rio de Janeiro) v.16 n.4 2011
Matéria (Rio de Janeiro. Online)
instacron:RLAM
Matéria (Rio de Janeiro), Volume: 16, Issue: 4, Pages: 857-867, Published: 2011
Matéria (Rio de Janeiro. Online)
instacron:RLAM
Matéria (Rio de Janeiro), Volume: 16, Issue: 4, Pages: 857-867, Published: 2011
Os aços 2,25Cr-1Mo são largamente utilizados no parque de geração termelétrica no Brasil, estando em boa parte das caldeiras atualmente em operação, e podem apresentar microestrutura composta de ferrita-perlita ou ferrita-bainita. Submetido à
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8aa520fafa356c9b0a9259de347b81ef
https://doi.org/10.1590/s1517-70762011000400007
https://doi.org/10.1590/s1517-70762011000400007
Publikováno v:
Physica C: Superconductivity. 354:467-471
The effects of the precursor powder on Bi-2223 phase formation and the superconducting properties of Ag sheathed Bi-2223 tapes were studied. Three precursors were prepared. One was made by the “one-powder” method and the other two were prepared b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b064c9caa84425358187faf7620a488
https://doi.org/10.1016/s0921-4534(01)00119-8
https://doi.org/10.1016/s0921-4534(01)00119-8
Publikováno v:
Physica C: Superconductivity. 354:463-466
In this work, an alternative method denominated as continuous cooling sintering is proposed, for Bi-2223/Ag tape processing. By this method, tapes are heated to a temperature above the single 2223 phase region then sintered over the whole Bi-2223 pha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d6494f1ceda57baf5a8aa78c36f5d4c
https://doi.org/10.1016/s0921-4534(01)00118-6
https://doi.org/10.1016/s0921-4534(01)00118-6
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 11:2971-2974
Heat treatments of Bi-2223/Ag tapes were performed through the continuous cooling sintering (CCS) method, by which the tapes are heated to high temperatures above the 2223 single-phase region, then cooled with a slow rate. The results indicated that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f1d2b9e778e167288149c69d95c98fb
https://doi.org/10.1109/77.919686
https://doi.org/10.1109/77.919686
Publikováno v:
Superconductor Science and Technology. 14:103-108
In this work, we successfully prepared Bi-2223/Ag tapes by sintering at temperatures above the Bi-2223 decomposition temperature. The continuous cooling sintering (CCS) process, which was proposed in our previous work, was used as the sintering regim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72d2519a780bdd1fa0680f4f8b23c28e
https://doi.org/10.1088/0953-2048/14/2/308
https://doi.org/10.1088/0953-2048/14/2/308
Publikováno v:
Materials Characterization. 46:75-80
The nonsuperconducting (non-SC) phases present in three BSCCO (Bi-Sr-Ca-Cu oxide) tapes have been identified. These tapes were obtained from precursor powder produced by three different routes and the microstructural characterization was conducted us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cc40d40c74ffc75a0e8d334843d65f9
https://doi.org/10.1016/s1044-5803(00)00097-8
https://doi.org/10.1016/s1044-5803(00)00097-8
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:2573-2576
The effect of preparation of precursor powders on the formation of Bi-2223 phase and critical current density (J/sub c/) of OPIT tapes, was studied. The precursors were prepared by "one-powder" and "two-powder" methods. The results indicate that a su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::706da1e814d525a537390f6df7a772b1
https://doi.org/10.1109/77.785012
https://doi.org/10.1109/77.785012
Publikováno v:
Journal of Applied Electrochemistry; Aug2002, Vol. 32 Issue 8, p883-889, 7p
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