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Fabrication of Bi-2223 High Temperature Superconducting Tapes With Groove Rolling Process
- Source :
- IEEE Transactions on Applied Superconductivity. 30:1-4
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- Bi 1.76 Pb 0.34 Sr 1.93 Ca 2.02 Cu 3.06 O 10+δ (Bi-2223) high temperature superconducting tapes were fabricated with Powder in tube (PIT) process. The traditional drawing process was partially replaced by groove rolling. The influence of cold working method on the filament density, the phase evolution mechanism as well as superconducting properties has been systematically studied. The groove rolling process could obviously enhance the filament density of Bi-2223 green wires, which thus led to the change of Bi-2223 formation rate. Meanwhile, although the heat treatment process has not been thoroughly optimized, the residual secondary phase content was still high, the critical current has been improved for more than 20% with groove rolling process, which should be attributed to the improved intergrain connections. On the other hand, the groove rolling process was also effective on the fabrication of Bi-2223 tapes with larger filament number, such as 85 or 121 to maintain the uniformity of filament deformation.
- Subjects :
- Superconductivity
Fabrication
Materials science
Process (computing)
High temperature superconducting
Deformation (meteorology)
Condensed Matter Physics
01 natural sciences
Electronic, Optical and Magnetic Materials
Protein filament
0103 physical sciences
Tube (fluid conveyance)
Electrical and Electronic Engineering
Composite material
010306 general physics
Groove (engineering)
Subjects
Details
- ISSN :
- 23787074 and 10518223
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Applied Superconductivity
- Accession number :
- edsair.doi...........d00c4bf1adfecc08cf4c09e8f47717e5