High critical current Ag and Ag alloy sheathed multifilament Bi-2223 tapes

Publication: Research - peer-reviewConference article – Annual report year: 1999

View graph of relations

Ag sheathed Bi-2223 multifilament tapes with filament numbers of 19, 37, 55, and 85 were produced by the powder-in-tube method. Enhanced tape performance has been achieved by optimisation of the processing conditions. Key factors are addressed that include elimination of the 2212 phase, improving grain connectivity through reducing the 2201 phase and alkaline earth cuprate phases, increasing superconductor core density as well as enhancing current contribution from edge filaments. A high J(c) of 50 kA/cm(2) with an I-c of 42 A has been achieved reproducibly in 19 filament tapes with dimensions of 0.16x2.8 mm(2) and silver/superconductor ratios of 4.4:1. By reducing the silver ratio, a J(e) of 14 kA/cm(2) with an I, of 38 A has been obtained in 55 filament tapes and an I-c of 84 A has been obtained in a tape with dimensions of 4x0.23 mm(2). A record J(c) of more than 30 kA/cm(2) with an I-c of 32 A was achieved in 250 metres long standard tapes. A 1250 m long pure Ag sheathed tape and an 1100 m long Ag alloyed tape have been produced with a J(c) of higher than 25 kA/cm(2) by using optimised process parameters.
Original languageEnglish
JournalI E E E Transactions on Applied Superconductivity
Publication date1999
Volume9
Issue2
Pages2613-2616
ISSN1051-8223
DOIs
StatePublished

Conference

Conference1998 Applied Superconductivity Conference
CountryUnited States
CityPalm Desert, CA
Period13/09/9818/09/98
CitationsWeb of Science® Times Cited: 24
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 6085198