Development of Bi-2223 HTS tape and its application to coil and current leads

S. S. Oh; H. S. Ha; D. W. Ha; H. M. Jang; C. Park; K. J. Song; Y. K. Kwon; K. S. Ryu

doi:10.1016/S0011-2275(02)00055-3

Development of Bi-2223 HTS tape and its application to coil and current leads

S. S. Oh^*
, H. S. Ha
, D. W. Ha
, H. M. Jang
, C. Park
, K. J. Song
, Y. K. Kwon
, K. S. Ryu

^*Corresponding author for this work

Physics Education

Korea Electrotechnology Research Institute

Research output: Contribution to journal › Journal article › peer-review

10 Scopus citations

Abstract

We are developing Bi-2223/Ag tapes with a high engineering critical current density by optimizing the powder-in-tube process and are studying its application to coil and current leads. We have fabricated 250 m-long tape and investigated optimized processing conditions to enhance engineering critical current density. More bubbling was found when the tape was heat-treated with a higher heating rate. Different kinds of superconducting joints were fabricated with multi-filamentary Bi-2223/Ag tapes, and 58% of retained I_c was achieved using the insertion of Bi-2223 core between two exposed tapes. Current decay property of the persistent mode HTS coil was investigated. Rapid current decay was observed when the operating current is in a flux-flow range. We could successfully fabricate a low heat leak type HTS current lead with Bi-2223/Ag-Au tapes by employing a stepped geometry. Using this lead, safe operation of 2 kA current transport was confirmed.

Original language	English
Pages (from-to)	377-382
Number of pages	6
Journal	Cryogenics
Volume	42
Issue number	6-7
DOIs	https://doi.org/10.1016/S0011-2275(02)00055-3
State	Published - 2002.06

Keywords

Bi-2223
Bubbling
Current decay
Current lead
Persistent mode
Powder-in-tube
Superconducting joint

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10.1016/S0011-2275(02)00055-3

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@article{4b1b8a55fb9344668e99cd74c6905b44,

title = "Development of Bi-2223 HTS tape and its application to coil and current leads",

abstract = "We are developing Bi-2223/Ag tapes with a high engineering critical current density by optimizing the powder-in-tube process and are studying its application to coil and current leads. We have fabricated 250 m-long tape and investigated optimized processing conditions to enhance engineering critical current density. More bubbling was found when the tape was heat-treated with a higher heating rate. Different kinds of superconducting joints were fabricated with multi-filamentary Bi-2223/Ag tapes, and 58\% of retained Ic was achieved using the insertion of Bi-2223 core between two exposed tapes. Current decay property of the persistent mode HTS coil was investigated. Rapid current decay was observed when the operating current is in a flux-flow range. We could successfully fabricate a low heat leak type HTS current lead with Bi-2223/Ag-Au tapes by employing a stepped geometry. Using this lead, safe operation of 2 kA current transport was confirmed.",

keywords = "Bi-2223, Bubbling, Current decay, Current lead, Persistent mode, Powder-in-tube, Superconducting joint",

author = "Oh, \{S. S.\} and Ha, \{H. S.\} and Ha, \{D. W.\} and Jang, \{H. M.\} and C. Park and Song, \{K. J.\} and Kwon, \{Y. K.\} and Ryu, \{K. S.\}",

year = "2002",

month = jun,

doi = "10.1016/S0011-2275(02)00055-3",

language = "English",

volume = "42",

pages = "377--382",

journal = "Cryogenics",

issn = "0011-2275",

number = "6-7",

}

TY - JOUR

T1 - Development of Bi-2223 HTS tape and its application to coil and current leads

AU - Oh, S. S.

AU - Ha, H. S.

AU - Ha, D. W.

AU - Jang, H. M.

AU - Park, C.

AU - Song, K. J.

AU - Kwon, Y. K.

AU - Ryu, K. S.

PY - 2002/6

Y1 - 2002/6

N2 - We are developing Bi-2223/Ag tapes with a high engineering critical current density by optimizing the powder-in-tube process and are studying its application to coil and current leads. We have fabricated 250 m-long tape and investigated optimized processing conditions to enhance engineering critical current density. More bubbling was found when the tape was heat-treated with a higher heating rate. Different kinds of superconducting joints were fabricated with multi-filamentary Bi-2223/Ag tapes, and 58% of retained Ic was achieved using the insertion of Bi-2223 core between two exposed tapes. Current decay property of the persistent mode HTS coil was investigated. Rapid current decay was observed when the operating current is in a flux-flow range. We could successfully fabricate a low heat leak type HTS current lead with Bi-2223/Ag-Au tapes by employing a stepped geometry. Using this lead, safe operation of 2 kA current transport was confirmed.

AB - We are developing Bi-2223/Ag tapes with a high engineering critical current density by optimizing the powder-in-tube process and are studying its application to coil and current leads. We have fabricated 250 m-long tape and investigated optimized processing conditions to enhance engineering critical current density. More bubbling was found when the tape was heat-treated with a higher heating rate. Different kinds of superconducting joints were fabricated with multi-filamentary Bi-2223/Ag tapes, and 58% of retained Ic was achieved using the insertion of Bi-2223 core between two exposed tapes. Current decay property of the persistent mode HTS coil was investigated. Rapid current decay was observed when the operating current is in a flux-flow range. We could successfully fabricate a low heat leak type HTS current lead with Bi-2223/Ag-Au tapes by employing a stepped geometry. Using this lead, safe operation of 2 kA current transport was confirmed.

KW - Bi-2223

KW - Bubbling

KW - Current decay

KW - Current lead

KW - Persistent mode

KW - Powder-in-tube

KW - Superconducting joint

UR - https://www.scopus.com/pages/publications/0036613551

U2 - 10.1016/S0011-2275(02)00055-3

DO - 10.1016/S0011-2275(02)00055-3

M3 - Journal article

AN - SCOPUS:0036613551

SN - 0011-2275

VL - 42

SP - 377

EP - 382

JO - Cryogenics

JF - Cryogenics

IS - 6-7

ER -

Development of Bi-2223 HTS tape and its application to coil and current leads

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Keywords

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