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Lecture

Lightweight MgB2 wires, cables and coils for aircraft engines

Tuesday (05.11.2019)
17:15 - 17:35
Part of:


Up to now, MgB2 phase is the lightest superconducting compound with only 2.5 gcm-3. The combination of MgB2 filaments with Ti-barriers and Al-stabilization sheath provides a wire with the minimal mass. But, pure Al is too soft to be used for the outer sheath of deformed composite wire. Therefore Al+Al2O3 material produced by powder metallurgy was utilized for single- and multi-core MgB2 wires, 12 strands Rutherford cables and also for wind and react coil self-insulated by Al2O3 layer created by anodic oxidation. Thin and high temperature resistant Al2O3 layer offers high space factor maximizing the current density of superconducting winding. High current densities and tolerance to axial stress have been obtained for MgB2/Ti/Al+Al2O3 wires. Such lightweight and high performance MgB2 conductors can be especially interesting for aircraft engines and any of space applications.

Speaker:
Dr. Pavol Kovac
Slovak Academy of Sciences
Additional Authors:
  • Imrich Hušek
    Institute of Electrical Engineering of Slovak Academy of Sciences
  • Lubomír Kopera
    Institute of Electrical Engineering of Slovak Academy of Sciences
  • Dr. Ján Kováč
    Institute of Electrical Engineering of Slovak Academy of Sciences
  • Dr. Alica Rosova
    Institute of Electrical Engineering of Slovak Academy of Sciences
  • Tibor Melisek
    Institute of Electrical Engineering of Slovak Academy of Sciences
  • Dušan Berek
    Institute of Electrical Engineering of Slovak Academy of Sciences