By Topic

Permeability and α-Fe Phase Precipitated in Fe-Si-B-Cu-Nb Amorphous Alloys

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Y. Ueda ; Muroran Institute of Technology. ; S. Ikeda ; T. Sakaguchi

The soft magnetic properties of amorphous Fe-Si-B-Cu-Nb alloys are markedly improved by annealing the alloys above the crystallization temperature. The magnetic permeability of the annealed Fe74SixB22-xCu1Nb3 alloys shows a maximum value at an Si concentration of x=14. The precipitation of μ-Fe grains is observed for the annealing temperature giving the highest magnetic permeability. The lattice constant of the α-Fe phase shows a minimum at the annealing temperature yielding the highest magnetic permeability, and depends strongly on the Si concentration. The Si content in the μ-Fe phase estimated from the lattice constant is about 20 at% for Si concentrations above x=12. The volume fraction of the precipitated μ-Fe phase depends on the B concentration in the amorphous alloy. The grain size of μ-Fe at the optimum annealing temperature is about 130Å. To explain the mechanism of the high permeability, it is necessary to consider factors other than the grain size the volume fraction of the precipitated μ-Fe.

Published in:

IEEE Translation Journal on Magnetics in Japan  (Volume:9 ,  Issue: 6 )