The Effect of Intermediate Pressure in the OPIT Fabrication on the Current Paths and the Current Carrying Capability of Bi-2223 Tapes

P. Skov-Hansen, Michael Rudolf Koblischka, P. Vase, P. Kovac, F. Marti

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Intermediate pressing techniques in the OPIT fabrication of high temperature superconducting Bi-2223 tapes have evolved from plane strain pressing into more continuous methods such as rolling, continuous pressing and eccentric rolling. In this study one of the most promising methods have been investigated, and novel techniques to characterize the tape quality have been taken into use: magneto optical imaging was used to detect the current paths inside the superconducting tape and to reveal differences between tapes that were intermediately pressed differently. The filaments in the tapes were extracted and shattered by ultrasonic vibration in order to check the size distribution. Bending tests were performed to show differences in current carrying capability as a function of an applied external load. It is shown how the pressing load greatly influences the current carrying capability of the finished high temperature superconducting tapes. By selecting the right pressing method it is possible to optimise the Icand Jevalues.

Original languageEnglish
Pages (from-to)3740-3743
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume11
Issue number1
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

Fingerprint

Tapes
tapes
pressing
Superconducting tapes
Fabrication
fabrication
Bending tests
Vibrations (mechanical)
Ultrasonics
plane strain
eccentrics
Imaging techniques
Temperature
filaments
ultrasonics
vibration

Keywords

  • Intermediate pressure
  • rolling
  • strength
  • ultrasonic vibration

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

The Effect of Intermediate Pressure in the OPIT Fabrication on the Current Paths and the Current Carrying Capability of Bi-2223 Tapes. / Skov-Hansen, P.; Koblischka, Michael Rudolf; Vase, P.; Kovac, P.; Marti, F.

In: IEEE Transactions on Applied Superconductivity, Vol. 11, No. 1, 01.01.2001, p. 3740-3743.

Research output: Contribution to journalArticle

@article{13780a02e9fd4edd9b8d56854f87770a,
title = "The Effect of Intermediate Pressure in the OPIT Fabrication on the Current Paths and the Current Carrying Capability of Bi-2223 Tapes",
abstract = "Intermediate pressing techniques in the OPIT fabrication of high temperature superconducting Bi-2223 tapes have evolved from plane strain pressing into more continuous methods such as rolling, continuous pressing and eccentric rolling. In this study one of the most promising methods have been investigated, and novel techniques to characterize the tape quality have been taken into use: magneto optical imaging was used to detect the current paths inside the superconducting tape and to reveal differences between tapes that were intermediately pressed differently. The filaments in the tapes were extracted and shattered by ultrasonic vibration in order to check the size distribution. Bending tests were performed to show differences in current carrying capability as a function of an applied external load. It is shown how the pressing load greatly influences the current carrying capability of the finished high temperature superconducting tapes. By selecting the right pressing method it is possible to optimise the Icand Jevalues.",
keywords = "Intermediate pressure, rolling, strength, ultrasonic vibration",
author = "P. Skov-Hansen and Koblischka, {Michael Rudolf} and P. Vase and P. Kovac and F. Marti",
year = "2001",
month = "1",
day = "1",
doi = "10.1109/77.919877",
language = "English",
volume = "11",
pages = "3740--3743",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "1",

}

TY - JOUR

T1 - The Effect of Intermediate Pressure in the OPIT Fabrication on the Current Paths and the Current Carrying Capability of Bi-2223 Tapes

AU - Skov-Hansen, P.

AU - Koblischka, Michael Rudolf

AU - Vase, P.

AU - Kovac, P.

AU - Marti, F.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Intermediate pressing techniques in the OPIT fabrication of high temperature superconducting Bi-2223 tapes have evolved from plane strain pressing into more continuous methods such as rolling, continuous pressing and eccentric rolling. In this study one of the most promising methods have been investigated, and novel techniques to characterize the tape quality have been taken into use: magneto optical imaging was used to detect the current paths inside the superconducting tape and to reveal differences between tapes that were intermediately pressed differently. The filaments in the tapes were extracted and shattered by ultrasonic vibration in order to check the size distribution. Bending tests were performed to show differences in current carrying capability as a function of an applied external load. It is shown how the pressing load greatly influences the current carrying capability of the finished high temperature superconducting tapes. By selecting the right pressing method it is possible to optimise the Icand Jevalues.

AB - Intermediate pressing techniques in the OPIT fabrication of high temperature superconducting Bi-2223 tapes have evolved from plane strain pressing into more continuous methods such as rolling, continuous pressing and eccentric rolling. In this study one of the most promising methods have been investigated, and novel techniques to characterize the tape quality have been taken into use: magneto optical imaging was used to detect the current paths inside the superconducting tape and to reveal differences between tapes that were intermediately pressed differently. The filaments in the tapes were extracted and shattered by ultrasonic vibration in order to check the size distribution. Bending tests were performed to show differences in current carrying capability as a function of an applied external load. It is shown how the pressing load greatly influences the current carrying capability of the finished high temperature superconducting tapes. By selecting the right pressing method it is possible to optimise the Icand Jevalues.

KW - Intermediate pressure

KW - rolling

KW - strength

KW - ultrasonic vibration

UR - http://www.scopus.com/inward/record.url?scp=85008013875&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85008013875&partnerID=8YFLogxK

U2 - 10.1109/77.919877

DO - 10.1109/77.919877

M3 - Article

VL - 11

SP - 3740

EP - 3743

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 1

ER -