Effect of Ca and Al Additions on the Magnetic Properties of Nanocrytalline Fe-Si-B-Nb-Cu Alloy Powder Cores

被引:0
作者
Moon, Sun Gyu [1 ]
Kim, Ji Seung [1 ]
Sohn, Keun Yong [1 ]
Park, Won-Wook [1 ]
机构
[1] Inje Univ, Dept Nano Syst Engn, 607 Obang Dong, Gimhae 50834, Gyungnam, South Korea
基金
新加坡国家研究基金会;
关键词
nanocrystalline; crystallization; grain size; permeability; coercivity; core loss; CRYSTALLIZATION; BEHAVIOR; M=ZR;
D O I
10.4283/JMAG.2016.21.2.192
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The Fe-Si-B-Nb-Cu alloys containing Ca and Al were rapidly solidified to thin ribbons by melt-spinning. The ribbons were ball-milled to make powders, and then mixed with 1 wt.% water glass and 1.5 wt.% lubricant. The mixed powders were burn-off, and then compacted to form toroidal-shaped cores, which were heat treated to crystallize the nano-grain structure and to remove residual stress of material. The characteristics of the powder cores were analyzed using a differential scanning calorimetry (DSC) and a B-H meter. The microstructures were observed using transmission electron microscope (TEM). The optimized soft magnetic properties (mu(i) and P-cv) of the powder cores were obtained from the Ca and Al containing alloys after annealing at 530 degrees C for 1 h. The core loss of Fe-Si-B-Nb-Cu-based powder cores was reduced by the addition of Ca element, and the initial permeability increased due to the addition of Al element.
引用
收藏
页码:192 / 196
页数:5
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