Magnetic properties of Nd-Fe-Co-Al rapid solidification alloys

Author(s):  
Nguyen Huy Dan ◽  
Luu Tien Hung
2021 ◽  
Vol 132 ◽  
pp. 107140
Author(s):  
M. Ipatov ◽  
V. Zhukova ◽  
L. Dominguez ◽  
K.L. Alvarez ◽  
A. Chizhik ◽  
...  

2020 ◽  
Vol 122 ◽  
pp. 106778 ◽  
Author(s):  
Chen Chen ◽  
Hang Zhang ◽  
Yanzhou Fan ◽  
Ran Wei ◽  
Weiwei Zhang ◽  
...  

1992 ◽  
Vol 46 (22) ◽  
pp. 14578-14582 ◽  
Author(s):  
X. Guo ◽  
X. Chen ◽  
Z. Altounian ◽  
J. O. Ström-Olsen

1994 ◽  
Vol 30 (6) ◽  
pp. 4948-4950
Author(s):  
A. Zaluska ◽  
G. Rudkowska ◽  
P. Rudkowski ◽  
J.O. Strom-Olsen

2002 ◽  
Vol 38 (5) ◽  
pp. 2841-2843 ◽  
Author(s):  
O. Heczko ◽  
P. Svec ◽  
D. Janickovic ◽  
K. Ullakko

1999 ◽  
Vol 577 ◽  
Author(s):  
M. Yamasaki ◽  
H. Mizuguchi ◽  
H Morioka ◽  
M. Hamano ◽  
A. Inoue

ABSTRACTIn order to obtain directly powders of nanocomposite a Fe/NdFeB alloys with the composition of NdxFebaICO8NbyB, where x: 8.0-8.5, y: 1.5-2.5, z: 6.0-6.5 in at%, have been prepared using the two-step rapid solidification apparatus, which is composed of a gas atomizing system at the upper side and a collision-and-solidificating rotor system at the lower side. It is found that the coercivity (HcJ) of flat-shaped powders obtained depends on powder sizes. The best HcJ in each sieved powder is 525 kA/m (6.60 kOe) for a size more than 500 p m, 449 kA/m (5.64 kOe) for 150-500 pm, and 391 kA/m (4.91 kOe) for 50-150 p m. These values are not so high compared to those of powders of ribbons prepared using a single-roller melt spinning apparatus. This should be attributed to the powder size distribution that causes fluctuation of the quenching rate. Thickness of the flat powder is found to be controllable up to 70/g m, which is useful to get compression molded bonded magnets with a high density and thus a high remanence (Br). An epoxy-bonded magnet with (BH)max: 61.8 kJ/m 3 (7.76 MGOe), Br: 0.732 T (7.32 kG), HcJ: 427 kA/m (5.36 kOe), and density of 6.20 Mg/m 3 is obtained.


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