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The roles of CHPD: superior critical current density and n-value obtained in binary in situ MgB2 cables

Journal Article


Abstract


  • A binary magnesium diboride (MgB2) cable has been assembled by braiding six Nb/Monel sheathed monofilament strands around a central copper stabilizer for improving the operational environment. The total critical current (Ic) of the braided cable is obtained by multiplying the I c of six single wires, without any dissipation. In this work, various mechanical deformations, i.e., swaging, two-axial rolling, groove rolling, and cold high-pressure densification (CHPD) at 1.8 GPa have been applied to the 6-stranded cable to obtain additional densification. The highest critical current density at both 4.2 and 20 K has been achieved in this work through the CHPD treated cable due to higher filament mass density. The present results are promising in view of the cable, particularly in power applications at industrial lengths that pave the way to seeking an optimal protocol to meet a practical functionality.

Authors


  •   Hossain, Md Shahriar
  •   Motaman, Ashkan (external author)
  •   Barua, Shaon (external author)
  •   Patel, Dipakkumar (external author)
  •   Mustapic, Mislav (external author)
  •   Kim, Jung Ho
  •   Maeda, Minoru (external author)
  •   Rindfleisch, Matthew A. (external author)
  •   Tomsic, Michael (external author)
  •   Cicek, Ozlem (external author)
  •   Melisek, T (external author)
  •   Kopera, L (external author)
  •   Kario, Anna (external author)
  •   Ringsdorf, B (external author)
  •   Runtsch, B (external author)
  •   Jung, A (external author)
  •   Dou, Shi Xue
  •   Goldacker, W (external author)
  •   Kovac, Paul M. (external author)

Publication Date


  • 2014

Citation


  • Hossain, M. S. A., Motaman, A., Barua, S., Patel, D., Mustapic, M., Kim, J. H., Maeda, M., Rindfleisch, M., Tomsic, M., Cicek, O., Melisek, T., Kopera, L., Kario, A., Ringsdorf, B., Runtsch, B., Jung, A., Dou, S. X., Goldacker, W. & Kovac, P. (2014). The roles of CHPD: superior critical current density and n-value obtained in binary in situ MgB2 cables. Superconductor Science and Technology, 27 (9), 095016-1-095016-7.

Scopus Eid


  • 2-s2.0-84906539728

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1220

Has Global Citation Frequency


Start Page


  • 095016-1

End Page


  • 095016-7

Volume


  • 27

Issue


  • 9

Place Of Publication


  • United Kingdom

Abstract


  • A binary magnesium diboride (MgB2) cable has been assembled by braiding six Nb/Monel sheathed monofilament strands around a central copper stabilizer for improving the operational environment. The total critical current (Ic) of the braided cable is obtained by multiplying the I c of six single wires, without any dissipation. In this work, various mechanical deformations, i.e., swaging, two-axial rolling, groove rolling, and cold high-pressure densification (CHPD) at 1.8 GPa have been applied to the 6-stranded cable to obtain additional densification. The highest critical current density at both 4.2 and 20 K has been achieved in this work through the CHPD treated cable due to higher filament mass density. The present results are promising in view of the cable, particularly in power applications at industrial lengths that pave the way to seeking an optimal protocol to meet a practical functionality.

Authors


  •   Hossain, Md Shahriar
  •   Motaman, Ashkan (external author)
  •   Barua, Shaon (external author)
  •   Patel, Dipakkumar (external author)
  •   Mustapic, Mislav (external author)
  •   Kim, Jung Ho
  •   Maeda, Minoru (external author)
  •   Rindfleisch, Matthew A. (external author)
  •   Tomsic, Michael (external author)
  •   Cicek, Ozlem (external author)
  •   Melisek, T (external author)
  •   Kopera, L (external author)
  •   Kario, Anna (external author)
  •   Ringsdorf, B (external author)
  •   Runtsch, B (external author)
  •   Jung, A (external author)
  •   Dou, Shi Xue
  •   Goldacker, W (external author)
  •   Kovac, Paul M. (external author)

Publication Date


  • 2014

Citation


  • Hossain, M. S. A., Motaman, A., Barua, S., Patel, D., Mustapic, M., Kim, J. H., Maeda, M., Rindfleisch, M., Tomsic, M., Cicek, O., Melisek, T., Kopera, L., Kario, A., Ringsdorf, B., Runtsch, B., Jung, A., Dou, S. X., Goldacker, W. & Kovac, P. (2014). The roles of CHPD: superior critical current density and n-value obtained in binary in situ MgB2 cables. Superconductor Science and Technology, 27 (9), 095016-1-095016-7.

Scopus Eid


  • 2-s2.0-84906539728

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1220

Has Global Citation Frequency


Start Page


  • 095016-1

End Page


  • 095016-7

Volume


  • 27

Issue


  • 9

Place Of Publication


  • United Kingdom