NDLI: Deformation of Bi,Pb(2223) tapes with two axial rolling under longitudinal stress: influence on microstructure

Content Provider	IEEE Xplore Digital Library
Author	Witz, G. Walker, E. Dhalle, M. Passerini, R. Musolino, N. Beneduce, C. Xiao-Dong Su Marti, F. Flukiger, R.L.
Copyright Year	2002
Abstract	The control of precursor density during the deformation process of Bi,Pb(2223) tapes is of vital importance in order to achieve good homogeneity of the filaments. Above a certain density, the ceramic grains cannot slide anymore during deformation, leading to an increased sausaging. Two axial rolling is known to yield a higher homogeneity among the filaments. However, the ceramic density reaches a relatively high level after a few deformation steps. Therefore, we used a new combination of two axial rolling and longitudinal tension, in order to control the density of the tapes. We present the evolution of density and degree of texture, both during the deformation process and after the heat treatment. Results clearly show an improvement in the control of microstructure resulting in higher critical current densities in tapes deformed under longitudinal tension compared to tapes deformed without stress. A correlation was established between the level of longitudinal tension and the transport jc.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3744
Ending Page	3747
Page Count	4
File Size	437340
File Format	PDF
ISSN	10518223
Volume Number	11
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ceramics Critical current density Microstructure Stress control Heat treatment Fabrication Capacitive sensors Telephony Standards development Potentiometers
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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