DocumentCode
765810
Title
Enhancing Magnetic Properties of Bulk Anisotropic Nd–Fe–B/ 
-Fe Composite Magnets by Applying Powder Coating Technologies
Author
Liu, S. ; Higgins, A. ; Shin, E. ; Bauser, S. ; Chen, C. ; Lee, D. ; Shen, Y. ; He, Y. ; Huang, M.Q.
Author_Institution
Univ. of Dayton Magnetics Lab., OH
Volume
42
Issue
10
fYear
2006
Firstpage
2912
Lastpage
2914
Abstract
Bulk anisotropic composite Nd14Fe79.5Ga0.5B6/alpha-Fe magnets with (BH)max=45-55 MGOe were synthesized by compacting Nd-Fe-Ga-B powders coated with thin alpha-Fe layers followed by hot compaction at 600degC to 700degC and hot deformation (die upsetting) at 850degC to 950degC with a height reduction of 71%. The coating techniques used include DC and RF sputtering, pulsed laser deposition, chemical coating, and electrolytic coating. Composite magnets prepared using these techniques demonstrate enhanced intrinsic coercivity and significantly improved squareness of intrinsic demagnetization curves
Keywords
compaction; composite materials; electrodeposition; iron alloys; magnetic materials; neodymium alloys; powder technology; pulsed laser deposition; 600 to 700 C; 850 to 950 C; Nd-Fe-B; bulk anisotropic composite magnets; chemical coating; electrolyte coating; hot compaction; interface exchange coupling; intrinsic coercivity; intrinsic demagnetization curves; magnetic properties; powder coating; pulsed laser deposition; Anisotropic magnetoresistance; Chemical lasers; Coatings; Compaction; Iron; Magnetic properties; Magnets; Neodymium; Powders; Pulsed laser deposition; Chemical coating; Nd; composite magnet; electrolyte coating; interface exchange coupling; nanograin; pulsed laser deposition; sputtering;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2006.879905
Filename
1704480
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