Round Multifilament Bi-2212/Ag Wire Development for High Field Magnet Applications

Han Ping Miao; Kenneth R. Marken; Maarten Meinesz; Boleslaw Czabaj; Seung Hong

doi:10.4028/www.scientific.net/MSF.546-549.1927

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HomeMaterials Science ForumMaterials Science Forum Vols. 546-549Round Multifilament Bi-2212/Ag Wire Development...

Round Multifilament Bi-2212/Ag Wire Development for High Field Magnet Applications

Abstract:

Development efforts at Oxford Superconducting Technology (OST) have recently been aimed at manufacturing long length round wires with improvement of transport properties for high field magnet applications. Recently, significant improvements in the JE and Jc performance have been achieved by optimizing the starting precursor composition, the deformation processes, and the heat treatments. The highest JE of 1580 A/mm2 (Jc of 6140 A/mm2) at 4.2 K, 0 T, JE of 420 A/mm2 at 4.2 K, 31 T and JE of 312 A/mm2 at 20 K, 2 T were obtained in 0.81 mm wire with the optimized condition. In addition, significant progress on braided insulation has been made for enabling a robust procedure for wind-and-react Bi-2212 solenoid coils. Ic and generated field have been measured in a series of such coils of increasing dimensions. In this paper the progress on the development of Bi-2212 round wires and coils will be reported.

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Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

1927-1930

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.1927

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Online since:

May 2007

Authors:

Han Ping Miao, Kenneth R. Marken, Maarten Meinesz, Boleslaw Czabaj, Seung Hong

Keywords:

Bi-2212 Round Wire, High Temperature Superconductor (HTS), Superconducting Magnet, Superconducting Material

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