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2007 | 111 | 5 | 693-703
Article title

Superconducting and Microstructural Properties of (Mg+2B)+MgB_2/Cu Wires Obtained by High Gas Pressure Technology

Content
Title variants
Languages of publication
EN
Abstracts
EN
In order to improve the overall critical current characteristics of Cu sheathed in situ MgB_2 wires a special architecture of the wire, and processing parameters were used. The study presents the influence of the ex situ MgB_2 chemical barrier between ex situ core and Cu, suppressing the reaction of Cu with Mg. Wires, doped with 10 at.% SiC of 18 nm average grain size, were fabricated from MgH_2 and B or from Mg and B powders, using the powder-in-tube method. The methods of rotary swaging or drawing were used as the alternating wire-forming processes. The samples were annealed under high Ar gas pressure (hot isostatic pressing) at 750ºC and 1.0 GPa for 15 and 30 min. A significant difference in Cu distribution across the wires for a long and short time of sintering was observed. The formation of microstructure in the powder-in-tube process and the relationship between the microstructure and critical current density J_c values, are discussed in this paper.
Keywords
EN
Publisher

Year
Volume
111
Issue
5
Pages
693-703
Physical description
Dates
published
2007-05
Contributors
author
  • Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
  • Faculty of Physics, Warsaw University of Technology, Warszawa, Poland
author
  • Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
author
  • Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, England
author
  • Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
author
  • Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
  • Faculty of Mechatronics, Military University of Technology, Warszawa, Poland
author
  • Industrial Institute of Electronics (PIE), Warszawa, Poland
author
  • Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
author
  • Institute of Low Temperature and Structure Research, PAS, Wrocław, Poland
author
  • Institute of Low Temperature and Structure Research, PAS, Wrocław, Poland
author
  • Int. Lab. of High Magnetic Fields and Low Temperatures, Wrocław, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv111n505kz
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