DocumentCode :
37333
Title :
Reel-to-Reel Selective Electroplating of Cu Stabilizer for Multifilamentary Coated Conductors
Author :
Xinwei Cai ; Kesgin, Ibrahim ; Selvamanickam, Venkat
Author_Institution :
Dept. of Mech. Eng., Univ. of Houston, Houston, TX, USA
Volume :
25
Issue :
3
fYear :
2015
fDate :
Jun-15
Firstpage :
1
Lastpage :
4
Abstract :
A continuous, reel-to-reel DC electroplating process has been developed to produce high-quality Cu stabilizer for multifilamentary coated conductors. Due to the large resistivity difference between the silver-coated superconducting filaments and the insulating oxidized grooves between the filaments, selective electroplating was achieved on laser-striated multifilamentary tapes. Every superconducting filament in the tape was homogeneously copper-coated without continuous deposition of copper on the insulating grooves. The multifilamentary tapes are then fully stabilized without significant reduction in critical current and the benefit from filamentization on AC loss is maintained. The high flexibility of electroplating enabled us to produce multifilamentary coated conductors with copper stabilizer thickness from 5 to 30 μm. A 10-m tape was fabricated to demonstrate the scalability of fully-stabilized, low-loss multifilamentary coated conductors. The stabilized 12-filamentary CC tape is able to achieve four-fold AC loss reduction with minimal reduction in its critical current.
Keywords :
copper; electrical resistivity; electroplated coatings; electroplating; silver; superconducting tapes; AC loss; Ag; Cu; DC electroplating; copper stabilizer; critical current; flexibility; insulating oxidized grooves; laser striated multifilamentary tapes; multifilamentary coated conductors; reel-to-reel selective electroplating; resistivity difference; silver coated superconducting filaments; size 10 m; size 5 mum to 30 mum; Conductors; Copper; Critical current density (superconductivity); High-temperature superconductors; Loss measurement; Silver; Surface treatment; AC loss; Reel-to-reel process; copper electroplating; multifilamentary; reel-to-reel process;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2014.2369964
Filename :
6954395
Link To Document :
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