Title :
Metallurgy and superconductivity in Nb-Al
Author :
Jorda, J.L. ; Flükiger, R. ; Junod, A. ; Muller, J.
Author_Institution :
Départment de Physique de la Matière Condensée, Switzerland
fDate :
1/1/1981 12:00:00 AM
Abstract :
The formation of the Nb3Al A15 phase under equilibrium conditions is studied on bulk, homogenized samples. Due to compositional effects, Tcof samples annealed during long periods at temperatures below 900°C is found to be close to 12 K. It follows that the high Tcvalues (15-16 K) observed on multifilamentary Nb3Al wires reacted at these temperatures cannot be interpreted on the basis of the equilibrium phase diagram.
Keywords :
Superconducting materials; Annealing; Argon; Critical current; Heat treatment; High temperature superconductors; Multifilamentary superconductors; Niobium compounds; Superconducting transition temperature; Superconductivity; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1981.1061155
