Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1817849 | Physica C: Superconductivity and its Applications | 2013 | 4 Pages |
Abstract
Kilometer level 6 + 1 filamentary MgB2 wires sheathed with Nb/Cu composite tube was fabricated by in situ powder-in-tube (PIT) method, nonferromagnetic Nb was employed as the centre reinforced materials. There is no any annealing in the whole fabrication process due to the excellent ductility of Nb/Cu based tube. The (Mg, B)/Nb/Cu composite wire was fabricated to the target size of 1.4 mm in diameter and heat treated at 680 °C for 2 h in a vacuum furnace. Microstructure, superconductivity, mechanical properties and homogeneity of critical current were measured respectively. The transport engineering critical current density (Jce) reaches 2.5 Ã 104 A/cm2 at 20 K, 1 T. The results show a good potential to fabricate high performance MgB2 wires at ambient pressure for practical application.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
C.S. Li, G. Yan, Q.Y. Wang, G.F. Jiao, A. Sulpice, F. Yang, X.M. Xiong, G.Q. Liu, J.Q. Feng, Y. Feng, P.X. Zhang,