Properties of reinforced MgB 2 wires with thin filaments. Goldacker, W., Schlachter, S., I., Obst, B., Liu, B., Reiner, J., & Zimmer, S. In Institute of Physics Conference Series, volume 181, pages 141-148, 2004. abstract bibtex Thermal stabilisation of MgB 2 demands for a multifilamentary structure the filaments being small in diameter and the homogeneous MgB 2 phase fine grained. Reactions with the sheath have to be avoided widely. Taking this into account we developed very thin steel reinforced MgB 2 wires for an application in a research satellite. The in-situ phase formation in the wire from Mg+B powders was chosen as most favourable method to achieve a good grain connection and thus high transport currents. We report on transport current measurements and the mechanical performance with applied tensile and bending strains. With standard undoped in-situ MgB 2 wires an improved processing route was developed applying a low temperature annealing which gave improved critical current densities of 38 kAcm -2 at 6 T and 10 kAcm -2 at 8 T, 4.2 K.
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abstract = {Thermal stabilisation of MgB 2 demands for a multifilamentary structure the filaments being small in diameter and the homogeneous MgB 2 phase fine grained. Reactions with the sheath have to be avoided widely. Taking this into account we developed very thin steel reinforced MgB 2 wires for an application in a research satellite. The in-situ phase formation in the wire from Mg+B powders was chosen as most favourable method to achieve a good grain connection and thus high transport currents. We report on transport current measurements and the mechanical performance with applied tensile and bending strains. With standard undoped in-situ MgB 2 wires an improved processing route was developed applying a low temperature annealing which gave improved critical current densities of 38 kAcm -2 at 6 T and 10 kAcm -2 at 8 T, 4.2 K.},
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author = {Goldacker, W. and Schlachter, S. I. and Obst, B. and Liu, B. and Reiner, J. and Zimmer, S.},
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