Bi-based mono-core superconductor tapes : fabrication process and the effect of the thermomechanical treatment on the transport properties / K.T. Lau and R-Abd Shukor
Fabrication of the Bi-based tapes started with the preparation of its precursor powder with composition of Bi1.8 Pb 0.4 Sr2 Ca2.2 Cu3 O10+y. The post-annealed powder with a majority of 2212 phase was then ground before it was packed into a silver tube. Then the composite was sway-rolled and drawn in...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Applied Sciences
2005
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| Subjects: | |
| Online Access: | http://ir.uitm.edu.my/id/eprint/11791/1/AJ_K.T.%20LAU%20SL%2005.pdf http://ir.uitm.edu.my/id/eprint/11791/ |
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| Summary: | Fabrication of the Bi-based tapes started with the preparation of its precursor powder with composition of Bi1.8 Pb 0.4 Sr2 Ca2.2 Cu3 O10+y. The post-annealed powder with a majority of 2212 phase was then ground before it was packed into a silver tube. Then the composite was sway-rolled and drawn into wire with diameter of 1.08 mm. To make it into tape form, the wire was cut into shorter length before went through rolling process using a roller machine. The tapes were divided into sample groups and underwent different thermo-mechanical treatments. All the final processed Bi-based tapes had mixed superconductor phases of 2223 and 2212. Most part of HTSC grains in the tapes melted during the sintering. Transport voltage-current characteristics of the tapes was found to obey the power law relationship. The thermo-mechanical treatment was found necessary to improve the structural quality of the tapes. |
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