Abstract
The microstructural and magnetic property changes of DyF 3-doped (Nd 26.06, Dy 6.51)-Fe bal -B 0.97- M 2.39 (wt.%) (M Cu, Al, Co, and Nb) sintered magnets as functions of the sintering conditions were studied. The sintering conditions for the optimum core-shell microstructure were determined. When the magnets were sintered at 1050°C for 4 h, a coercivity of 35.1 kOe was obtained without sacrificing the remanence. When the magnets were doped with DyF 3, the formation of the RE-rich phase (Nd-Dy-O) was effectively suppressed and, hence, saving the Dy. In addition, the formation of a cubic-NdOF triple-junction phase (TJP) improves the interface uniformity and enhances the coercivity.
| Original language | English |
|---|---|
| Article number | 07A707 |
| Journal | Journal of Applied Physics |
| Volume | 111 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2012 Apr 1 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Effect of sintering conditions on the magnetic and microstructural properties of Nd-Fe-B sintered magnets doped with DyF 3 powders. / Park, Song E.; Kim, Tae Hoon; Lee, Seong Rae; Namkung, Seok; Jang, Tae Suk.
In: Journal of Applied Physics, Vol. 111, No. 7, 07A707, 01.04.2012.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effect of sintering conditions on the magnetic and microstructural properties of Nd-Fe-B sintered magnets doped with DyF 3 powders
AU - Park, Song E.
AU - Kim, Tae Hoon
AU - Lee, Seong Rae
AU - Namkung, Seok
AU - Jang, Tae Suk
PY - 2012/4/1
Y1 - 2012/4/1
N2 - The microstructural and magnetic property changes of DyF 3-doped (Nd 26.06, Dy 6.51)-Fe bal -B 0.97- M 2.39 (wt.%) (M Cu, Al, Co, and Nb) sintered magnets as functions of the sintering conditions were studied. The sintering conditions for the optimum core-shell microstructure were determined. When the magnets were sintered at 1050°C for 4 h, a coercivity of 35.1 kOe was obtained without sacrificing the remanence. When the magnets were doped with DyF 3, the formation of the RE-rich phase (Nd-Dy-O) was effectively suppressed and, hence, saving the Dy. In addition, the formation of a cubic-NdOF triple-junction phase (TJP) improves the interface uniformity and enhances the coercivity.
AB - The microstructural and magnetic property changes of DyF 3-doped (Nd 26.06, Dy 6.51)-Fe bal -B 0.97- M 2.39 (wt.%) (M Cu, Al, Co, and Nb) sintered magnets as functions of the sintering conditions were studied. The sintering conditions for the optimum core-shell microstructure were determined. When the magnets were sintered at 1050°C for 4 h, a coercivity of 35.1 kOe was obtained without sacrificing the remanence. When the magnets were doped with DyF 3, the formation of the RE-rich phase (Nd-Dy-O) was effectively suppressed and, hence, saving the Dy. In addition, the formation of a cubic-NdOF triple-junction phase (TJP) improves the interface uniformity and enhances the coercivity.
UR - http://www.scopus.com/inward/record.url?scp=84861729455&partnerID=8YFLogxK
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U2 - 10.1063/1.3672246
DO - 10.1063/1.3672246
M3 - Article
VL - 111
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 7
M1 - 07A707
ER -