DocumentCode :
765810
Title :
Enhancing Magnetic Properties of Bulk Anisotropic Nd–Fe–B/ 
-Fe Composite Magnets by Applying Powder Coating Technologies
-Fe Composite Magnets by Applying Powder Coating TechnologiesAuthor :
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
Link To Document :
