Journal of Low Temperature Physics

, Volume 179, Issue 1–2, pp 119–125 | Cite as

Multifilamentary MgB\(_{2}\) Wires Prepared by an In Situ Powder-in-Tube Method

  • C. E. Sobrero
  • J. M. Vallejos
  • V. San Martin
  • M. T. Malachevsky
  • A. C. Serquis
Article
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Abstract

MgB\(_{2}\) has become a commercially attractive material for technological applications for its particular superconducting properties. However, due to its brittleness to obtain wires, a metallic sheath is needed for drawing. In the present work, grade 2 titanium has been used as sheath material, and several multifilamentary wires have been prepared. The powder-in-tube method has been used to prepare the wires with the in situ variant, where the sheath is filled with the unreacted precursor powders (Mg and B). Different thermal treatments have been investigated including several intermediate treatments during the drawing process in addition to the final one. This last treatment is necessary to accomplish the synthesis and heal the cracks generated during the cold work. The superconducting properties were determined by magnetization measurements on a SQUID magnetometer, and the microstructure evolution was followed by TEM and SEM microscopy. Mechanical behavior is also evaluated.

Keywords

MgB\(_{2}\) In situ Ti 
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Notes

Acknowledgments

We acknowledge financial support from ANPCyT (PICT 2010-0939), CONICET (PIP 114-201001-00193) and UNCuyo, and Javier Villacura for his technical support.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • C. E. Sobrero
    • 1
  • J. M. Vallejos
    • 2
  • V. San Martin
    • 3
  • M. T. Malachevsky
    • 1
  • A. C. Serquis
    • 1
  1. 1.Centro Atomico BarilocheCNEA-CONICETS.C. de BarilocheArgentina
  2. 2.Facultad de Ingenieria - UN del NordesteCorrientesArgentina
  3. 3.Facultad de Ciencias Exactas y NaturalesUN de la PampaSanta RosaArgentina

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