Evolution of electromagnetic properties and microstructure with sintering temperature for MgB2/Fe wires made by combined in-situ/ex-situ process

Authors

Wenxian Li, University of WollongongFollow
Rong Zeng, University of Wollongong
Yun Zhang, University of Wollongong
Xun Xu, University of Wollongong
Y Li, Shanghai University
S X. Dou, University of WollongongFollow

RIS ID

37700

Publication Details

Li, W. X., Zeng, R., Zhang, Y., Xu, X., Li, Y. & Dou, S. Xue. (2011). Evolution of electromagnetic properties and microstructure with sintering temperature for MgB2/Fe wires made by combined in-situ/ex-situ process. IEEE Transactions on Applied Superconductivity, 21 (3), 2635-2638.

Abstract

The influences of microstructure, connectivity, and disorder on the critical current density, J_c, are discussed to clarify the different mechanisms of J_c (H) in different magnetic field ranges for in-situ and combined in-situ/ex-situ MgB₂/Fe wires. Sintering temperature plays a very important role in the electromagnetic properties at different temperatures and under various magnetic fields. Connectivity, upper critical field, H_c2, and irreversibility field, H_irr, are studied to demonstrate the mechanism of J_c dependence on magnetic field. The combined in-situ/ex-situ process is proved to be a promising technique for fabrication of practical MgB₂ wires.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205