- Effect of Cu and DyF3 Powder Additions on the Coercivity of Sintered Nd-Fe-B Magnets
-
S. NamKung, M.W. Lee, D.R. Dhakal, T.H. Lim, T.H. Kim, S.R. Lee, T.S. Jang
-
J Korean Powder Metall Inst. 2012;19(4):247-252.
-
DOI: https://doi.org/10.4150/KPMI.2012.19.4.247
-
-
 Abstract
 PDF
- Effect of Cu and DyF_3 powder mixing with Cu-free (Nd, Dy)-Fe-B jet-milled powder on the magnetic properties of sintered magnets was investigated. The coercivity of a magnet prepared from the Cu-free (Nd, Dy)-Fe-B powder was about 10 kOe even though the alloy powder already contained some Dy (3.5 wt%). When small copper powder was blended, however, the coercivity of the magnet increased almost 100%, exhibiting about 20 kOe. On the contrary, the coercivity enhancement was moderate, about 4 kOe, when dysprosium content in the sintered magnet was simply increased to 4.9 wt% by the addition of small DyF_33 powder.
|
kpmi
