Details

Autor(en) / Beteiligte

• Glowacki, Bartlomiej Andrzej

Titel

Superconducting In Situ/Post In Situ MgB[sub.2] Joints

Ist Teil von

• Materials, 2023-10, Vol.16 (19)

Ort / Verlag

MDPI AG

Erscheinungsjahr

2023

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The superconducting joints of superconducting in situ MgB[sub.2] wires have been of great interest since the first MgB[sub.2] wires were manufactured. The necessity of joining fully reacted wires in applications such as NMR brings complexity to the methodology of connecting already reacted wires sintered under optimised conditions via a mixture of Mg + 2B and subsequential second heat treatment to establish fully superconducting MgB[sub.2] joints. Some of the data in the literature resolved such a procedure by applying high cold pressure and sintering at a low temperature. A topical review publication did not address in depth the question of whether cold sintering is a potential solution, suggesting that hot pressing is the way forward. In this paper, we discuss the potential joint interfacial requirements, suggesting a thermo-mechanical procedure to successfully form a superconductive connection of two in situ reacted wires in the presence of Mg + 2B flux. The critical current at 25 K of the researched junction achieved 50% I[sub.c] for an individual in situ wire.