DocumentCode :
26224
Title :
Effect of Ball Milling and Fatty Acid Addition on the Properties of 
Wires
Author :
Laliena, C. ; Martinez, E. ; Angurel, L.A. ; Navarro, Rafael
Author_Institution :
Dept. de Cienc. y Tecnol. de Mater. y Fluidos, Univ. de Zaragoza, Zaragoza, Spain
Volume :
25
Issue :
3
fYear :
2015
fDate :
Jun-15
Firstpage :
1
Lastpage :
4
Abstract :
Improved inductive critical current density Jc, at medium and high magnetic fields B, has been obtained in MgB2 wires made from ball-milled and carbon-doped precursors. The analyzed Fe-sheathed monofilamentary wires have been manufactured by the powder-in-tube and in-situ methods. Carbon doping has been achieved by the addition of fatty acids, in particular oleic acid (C18H34O2). In order to enhance the Jc(B) performance and the homogeneity of the wires, we have analyzed the combined effects of ball milling and oleic acid addition. The changes in the microstructure, phase composition, and superconducting properties for different milling parameters and the fixed amount of acid addition have been analyzed.
Keywords :
ball milling; carbon; critical current density (superconductivity); doping; magnesium compounds; superconducting materials; wires; MgB2:C; ball milling; carbon doping; fatty acid addition; in situ method; inductive critical current density; magnesium diboride wires; magnetic field; monofilamentary wires; oleic acid; powder-in-tube method; Ball milling; Critical current density (superconductivity); Doping; Magnetic fields; Milling; Powders; Wires; $hbox{MgB}_{2}$; Ball milling; MgB2; ball milling; critical currents; doping; superconducting wires;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2014.2364158
Filename :
6945820
Link To Document :
