NDLI: Phase evolution study and optimization of the heat treatment process for high current capacity Bi-2223 tapes

Content Provider	Springer Nature Link
Author	Bai, Lifeng Zhang, Shengnan Li, Chengshan Hao, Qingbin Liu, Guoqing Zhang, Pingxiang
Copyright Year	2017
Abstract	Powder in tube process (PIT) was adopted for the fabrication of single filament Bi-2223 tapes, and a heat treatment process including the first heat treatment (HT1), intermediate rolling (IR), and second heat treatment (HT2) was performed. The phase evolution mechanism and microstructure changes during these heat treatment processes were systematically discussed. The influences of HT1 parameters on the phase evolution process of Bi-2223 tapes were discussed. With the optimized HT1 process, a proper Bi-2223 content of about 90% was achieved. HT2 process was also optimized by adding a post annealing process. An obvious increase of current capacity was obtained due to the enhancement of intergrain connections. Single filament Bi-2223 tapes with the critical current of I $_{c}$-90 A were fabricated with the optimized sintering process.
Starting Page	862
Ending Page	865
Page Count	4
File Format	PDF
ISSN	10002413
Journal	Journal of Wuhan University of Technology-Mater. Sci. Ed.
Volume Number	32
Issue Number	4
e-ISSN	19930437
Language	English
Publisher	Wuhan University of Technology
Publisher Date	2017-07-28
Publisher Place	Wuhan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	high temperature superconductor Bi-2223 phase evolution spray drying critical current density Materials Science
Content Type	Text
Resource Type	Article
Subject	Materials Science

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