Fabrication of (6 + 1)-Structure Superconducting Cable Based on 30-Core MgB2 Superconducting Wire
| Autor: | Xifeng Pan, Chen Chuan, Pingxiang Zhang, Guo Yan, Jianqing Feng, Xi Dan, Jinshan Li, Qingyang Wang, Dayou Wang |
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| Rok vydání: | 2020 |
| Předmět: |
Superconductivity
Materials science Fabrication Condensed matter physics Superconducting wire Copper wire engineering.material Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Core (optical fiber) Transverse plane 0103 physical sciences engineering Critical current Electrical and Electronic Engineering 010306 general physics |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 30:1-5 |
| ISSN: | 2378-7074 1051-8223 |
| DOI: | 10.1109/tasc.2020.2972218 |
| Popis: | 30-core MgB2 superconducting wire with a diameter of 1.0 mm has been prepared by the conventional in-situ powder-in-tube (PIT) method. The metallographic analysis results show that the 30-core MgB2 wire has good uniformity in both transverse and longitudinal directions, and the critical current ( I c) and critical current density ( J c) at 4.2 K and 4 T reach 82.6 A and 7.3 × 104 A/cm2, respectively. Furthermore, (6 + 1)-structure MgB2 superconducting cables have also been successfully fabricated with different twist pitches ( T p) by the twisted and reacted (T&R) route, comprising six 30-core MgB2 wires around one copper wire in the center. The I c of the (6 + 1)-structure MgB2 superconducting cable with 50 mm T p reaches 467 A at 4.2 K and 4 T, suggesting no degradation of the MgB2 wire when self-field effects are taken into account. |
| Databáze: | OpenAIRE |
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