論文

査読有り
2005年7月

Annealing effects in pit-processed MgB2/SUS316 (stainless steel) composite wires

MODERN PHYSICS LETTERS B
  • S Balamurugan
  • ,
  • K Higashikawa
  • ,
  • T Nakamura
  • ,
  • K Osamura

19
16
開始ページ
793
終了ページ
800
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1142/S0217984905008803
出版者・発行元
WORLD SCIENTIFIC PUBL CO PTE LTD

The MgB2/SUS316 (stainless steel) wires were fabricated by powder-in-tube (PIT) method using commercially available superconducting MgB2 powder at ambient pressure, and the annealing effects on T-c as well as J(c) were investigated. The as-rolled MgB2/SUS316 wire showed a zero-resistance superconducting transition temperature (T-c) at 33.4 K and a critical current density (J(c)(self-field)) of 2.22 kAcm(-2) at 18.4 K. In order to check the annealing effect, the different pieces of the as-rolled wires were annealed at various annealing conditions under Ar atmosphere in vacuum (60 cm Hg) sealed silica-tube. As compared to the MgB2/Fe wires, the annealing temperature and duration were lower and much shorter respectively, for the MgB2/SUS316 (stainless steel) wires. On annealing at 873 K for similar to 1 s, we obtained the best sample with a J(c)(self-field) of 12.1 kAcm(-2) at 16.9 K with a maximum T-c of 36.1 K. Longer annealing time (similar to 10 s) above 873 K reduced the T-c as well as the J(c), indicating a possible chemical reaction between the MgB2 cores and the sheath material.


リンク情報
DOI
https://doi.org/10.1142/S0217984905008803
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000232376400005&DestApp=WOS_CPL
ID情報
  • DOI : 10.1142/S0217984905008803
  • ISSN : 0217-9849
  • Web of Science ID : WOS:000232376400005

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