MgB2 Superconducting Joint Technique Based on Mg Diffusion Method

Autor:	Xifeng Pan, F.R. Wang, Ruijuan Nie, Zigeng Huang, Kehuan Linghu, Qianhong Wu, Xinwei Cai, Zizhao Gan, Wenhao Luo, Qingrong Feng
Rok vydání:	2019
Předmět:	Superconductivity Materials science Compaction Superconducting magnet Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention law Electromagnetic shielding Critical current Electrical and Electronic Engineering Composite material Low resistance Transformer
Zdroj:	IEEE Transactions on Applied Superconductivity. 29:1-5
ISSN:	2378-7074 1051-8223
DOI:	10.1109/tasc.2019.2905419
Popis:	MgB2, which has a high stransition temperature (Tc) of 40 K, has great potential for superconducting applications. Recently, significant improvements in the performance of MgB2 wires have enabled applications, such as superconducting magnets, magnetic shielding devices, flux transformers, and gradient meters. However, the problem of superconducting joints in some applications must be solved. In this study, low resistance joints between MgB2 wires were fabricated using the Mg diffusion method. The MgB2 wires were inserted into B bulks and compacted to different densities. Liquid Mg was reacted with the B bulk to form MgB2. The impact of the compaction pressure of the B bulk was studied. With the increase of compaction pressure, the Tc of the joint decreased while the critical current (Ic) of the joint increased. The highest Tc value of the joint was 39 K, and the highest Ic value of the joint at 0 T was 51 A at 20 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4101e60574d0f363e802ac36b8819a91 https://doi.org/10.1109/tasc.2019.2905419 Zobrazit plný text záznamu