By Topic

Structural and magnetic properties of nanocrystalline Fe-rich Fe-Nb-Nd-B sintered magnets produced by consolidating amorphous powders

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
$31 $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)
Kojima, A. ; Fac. of Eng., Tohoku Univ., Sendai, Japan ; Makino, A. ; Inoue, A.

Nanocrystalline bulk Fe88Nb2Nd5B 5 and Fe86Nb2Nd7B5 alloys were made by consolidating amorphous powders with an electric-pulse-current sintering method and subsequent annealing. Bulk alloy made by consolidating amorphous powders has a higher density (the maximum density could reach 7.5 g/cm3 consolidating at 873 K and 636 MPa) than that made by consolidating crystalline powders, presumably because the amorphous alloy softens around the crystallization temperature. The structure formed after annealing at 1023 K for 180 s shows a nanocrystalline composite consisting of bcc-Fe, Nd2Fe 14B and Fe3B or Fe2B phases with grain sizes of 20-40 nm. The nanocrystalline bulk Fe88Nb2Nd5B5 alloy shows hard magnetic properties, remanence of 1.05 T, coercive force (HcJ ) of 263 kA/m, maximum energy product ((BH)max) of 75 kJ/m3

Published in:

Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )