Electromagnetic densification of MgB<sub>2</sub>/Cu wires

Woźniak, Mariusz; Glowacki, B.A.

doi:10.1088/0953-2048/27/3/035008

Cited by 6 publications

(1 citation statement)

References 27 publications

(46 reference statements)

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“…A dynamic sintering was conducted at 750 • C for 15 min under pressure of 1 GPa. From an earlier experiment, it became evident that pressure needs to be introduced before in situ formation of the MgB 2 is taking place and preferentially continues during high temperature sintering to result in densified core [30].…”

Section: Mgb 2 In Situ Pit Densification Methodsmentioning

confidence: 99%

Advances in Development of Powder-in-Tube Nb₃Sn, Bi-Based, and MgB₂ Superconducting Conductors

Glowacki

2019

Acta Phys. Pol. A

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Analysis of the applicability of the low cost powder-in-tube technology of technical Nb3Sn, Bi2Sr2CaCu2O 8+d and MgB2 superconducting conductors has been presented in respect of their complexity in emerging hydrogen cryomagnetic technology where temperature of the liquid hydrogen can be as low as 14.1 K, and all above conductors can be considered having a comparable Jc(B, T ) characteristics. The new emerging hydrogen economy where liquid hydrogen can serve as an energy carrier and cryogenic coolant with exceptionally high latent heat value presents opportunities for the range of superconducting materials characterised by Tc applicable at hydrogen technologies. All above powder-in-tube conductors are exploring solid-liquid reactive diffusion processes originated from the complex compounds or intermetallics, defining the actual "technical price" in (€/(kA m)) of the resulting wire compound based on Jc(B, T ) characteristics and materials as well as manufacturing cost and complexity. This rather complex techno-economic aspect of superconducting powder-in-tube conductors needs to be addressed and analysed to help to solve a trilemma concerning powder-in-tube conductors at low temperatures.

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Section: Mgb 2 In Situ Pit Densification Methodsmentioning

confidence: 99%

Advances in Development of Powder-in-Tube Nb₃Sn, Bi-Based, and MgB₂ Superconducting Conductors

Glowacki

2019

Acta Phys. Pol. A

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Electromagnetically Assisted Densification of Copper-Sheeted in Situ MgB 2 /Cu Wires

Woźniak

Glowacki

2014

J Supercond Nov Magn

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This paper summarizes recent methods of improving critical current density of in situ Cu-sheathed MgB 2 wires. These methods include using optimum heat treatment schedule, adding copper powder to the wire core and electromagnetic densification of wire core. The large part of work reported here focuses on the latter method applied to the relatively low-density MgB 2 /Cu wire core. The packing density of unreacted, monofilament wire core was increased by 8 % with oscillating magnetic pressure, reaching a peak value above 700 MPa as calculated by finite element modelling of the forming process. The higher density of the MgB 2 core combined with copper powder addition resulted in a critical current density increase of more than fivefold in comparison to purely stoichiometric and cold-drawn-only wire.

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Influence of the lamella structure and high isostatic pressure on the critical current density in in situ MgB2 wires without a barrier

Mroczek

Morawski

Czujko

et al. 2019

Journal of Alloys and Compounds

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Electromagnetic densification of MgB₂/Cu wires

Cited by 6 publications

References 27 publications

Advances in Development of Powder-in-Tube Nb₃Sn, Bi-Based, and MgB₂ Superconducting Conductors

Advances in Development of Powder-in-Tube Nb₃Sn, Bi-Based, and MgB₂ Superconducting Conductors

Electromagnetically Assisted Densification of Copper-Sheeted in Situ MgB 2 /Cu Wires

Influence of the lamella structure and high isostatic pressure on the critical current density in in situ MgB2 wires without a barrier

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Electromagnetic densification of MgB2/Cu wires

Cited by 6 publications

References 27 publications

Advances in Development of Powder-in-Tube Nb3Sn, Bi-Based, and MgB2 Superconducting Conductors

Advances in Development of Powder-in-Tube Nb3Sn, Bi-Based, and MgB2 Superconducting Conductors

Electromagnetically Assisted Densification of Copper-Sheeted in Situ MgB 2 /Cu Wires

Influence of the lamella structure and high isostatic pressure on the critical current density in in situ MgB2 wires without a barrier

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Product

Resources

About

Electromagnetic densification of MgB₂/Cu wires

Advances in Development of Powder-in-Tube Nb₃Sn, Bi-Based, and MgB₂ Superconducting Conductors

Advances in Development of Powder-in-Tube Nb₃Sn, Bi-Based, and MgB₂ Superconducting Conductors