Research on Preparation and Properties of Fe-Si-Al Soft Magnetic Composites

被引：3
|
作者：
Li, Q. D. [1 ]
Dong, X. W. [1 ]
Liu, T. X. [1 ]
You, J. H. [2 ]
Lian, F. Z. [3 ]
机构：
[1] Heilongjiang August First Land Reclamat Univ, Coll Engn, Daqing 163319, Peoples R China
[2] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110023, Peoples R China
[3] Northwestern Univ, Sch Mat & Met, Inst Mat, Shenyang 110004, Peoples R China
来源：
SOFT MAGNETIC MATERIALS | 2011年 / 298卷
关键词：
Magnetic annealing; Soft magnetic composites; Hysteresis loss; Eddy current loss; ELECTRICAL-PROPERTIES; PARTICLE-SIZE; COMPACTION;
D O I：
10.4028/www.scientific.net/AMR.298.173
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The Fe-Si-Al soft magnetic composites were produced by cold pressing of water-atomized Fe-Si-Al powder using organic binder. The effect of shaping pressure, annealing temperature, magnetic annealing and dielectric content on properties of Fe-Si-Al soft magnetic composites was investigated. The results showed that increasing shaping pressure increases density and radial crushing strength of Fe-Si-Al soft magnetic cores, and decreases coercivity and total loss. Increasing annealing temperature can increase effective permeability and decrease total loss owing to decreasing hysteresis loss, and over-annealing (>660 degrees C) can deteriorate magnetic properties. The magnetic annealing can decrease total loss of Fe-Si-Al magnetic powder core. Increasing dielectric content can reduce the eddy current loss of Fe-Si-Al magnetic powder core and decrease the real part of permeability. Fe-Si-Al magnetic powder core with shaping pressure of 1800 MPa, annealing temperature of 660 degrees C and dieleletric content of 0.7% presented the optimum magnetic properties with an effective permeability of 127, a total loss of 78mW/cm(3) and a radial crushing strength of 18MPa.
引用
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页码：173 / +
页数：2
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