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Thermal conductivities and thermal runaways of superconducting MgB2 wires stabilized by an Al + Al2O3 sheath

ContributorsKováč, P; Bonura, Marcoorcid; Santra, S; Kopera, L; Rosová, A; Senatore, Carmineorcid; Hušek, I
Published inSuperconductor Science and Technology, vol. 32, no. 115007
Publication date2019
Abstract

This paper presents a study of the thermal transport properties of extra-light MgB2/Ti/Al + Al2O3 composite wires. The longitudinal thermal conductivity has been investigated as a function of temperature and magnetic field on wires differing only by an outer Al + Al2O3 sheath. The correlation between the thermal transport properties, the microstructure of the Al + Al2O3 sheath and the Al/Ti interface reactions provide important information for these thermally stabilized extra-light superconductors. The thermal runaways observed by the current–voltage characteristics of MgB2/Ti/Al + Al2O3 wires correlate well with the conductor's temperature affected by the thermal conductivity and the resistance of the outer sheath.

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KOVÁČ, P et al. Thermal conductivities and thermal runaways of superconducting MgB2 wires stabilized by an Al + Al2O3 sheath. In: Superconductor Science and Technology, 2019, vol. 32, n° 115007. doi: 10.1088/1361-6668/ab3dbf
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Additional URL for this publicationhttps://iopscience.iop.org/article/10.1088/1361-6668/ab3dbf
Journal ISSN0953-2048
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