Cart (Loading....) | Create Account
Close category search window
 

Evaluation of sintered and reground Nd‐Fe‐B alloys with Co, Dy and Al substitutions for use in bonded magnets

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 $31
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)
Li, M. ; KJS Associates, 1712 Springfield Street, Dayton, Ohio 45403 ; Strnat, K.J. ; Mildrum, H.F.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.347979 

Crushing sintered Nd‐Fe‐B into coarse powders quickly destroys their coercivity and alignability in a magnetic field, making them useless for bonded magnets. But a double anneal of 890 °C/1 h plus 570 °C/1 h can largely restore these properties for particles ≳200 μm. Alloys modified with two or more of Co, Dy, and Al additions suffer much lower Hci and Hk losses during grinding. They also respond favorably to annealing, but less than the ternary alloy. Sintered magnets of four compositions were prepared in many size fractions between ∼50 and 1600 μm and demagnetization curves measured as‐crushed, after single and double anneals. Powders of alloys (Nd0.88Dy0.12)(Fe0.8-xCo0.12B0.08 Alx)5.5, where x=0.012 and 0.036, retain Hci values above 10 kOe down to ∼200 μm and could be quite useful in bonded magnet fabrication. This paper reports detailed results for two selected compositions: the six‐component alloy with x=0.012 and ternary Nd‐Fe‐B.

Published in:

Journal of Applied Physics  (Volume:69 ,  Issue: 8 )

Date of Publication:

Apr 1991

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.