Different annealing treatments for improvement of magnetic and electrical properties of soft magnetic composites

被引:94
作者
Shokrollahi, H. [1 ]
Janghorban, K. [1 ]
机构
[1] Shiraz Univ, Sch Engn, Dept Mat Sci & Engn, Shiraz, Iran
关键词
soft magnetic composite; magnetic annealing; two steps annealing; magnetic loss;
D O I
10.1016/j.jmmm.2007.04.011
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper investigates the effect of two steps, annealing and magnetic annealing, on the magnetic and electrical properties of iron powder particles with high purity used in soft magnetic composite materials. It was found that at low frequencies (< 10 kHz) the magnetic loss in the high-temperature magnetic annealed state is smaller than that in the low-temperature magnetic, magnetic annealed and without annealing state. On the contrary, the magnetic loss in the high-temperature magnetic annealed state is larger at high frequencies (> 10 kHz) than the others. The results showed that magnetic loss of annealed powder was smaller than that of unannealed powder after 100 h milling process. Also, the magnetic loss of samples prepared by two steps milling and annealing process was smaller than samples with one-step process. The magnetic and electrical properties of the cylindrical samples were measured by an LCR meter. Microstructures of the samples were characterized by SEM and XRD. (c) 2007 Published by Elsevier B. V.
引用
收藏
页码:61 / 67
页数:7
相关论文
共 13 条
[1]  
Asaka K., 2005, 4 HIT POWD MET, V4, P3
[2]   Powder metal development for electrical motor applications [J].
Bayramli, E ;
Gölgelioglu, Ö ;
Ertan, HB .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 161 (1-2) :83-88
[3]   Structure and properties of composite materials with polymer matrix reinforced Nd-Fe-B hard magnetic nanostructured particles [J].
Dobrzanski, LA ;
Drak, M .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 157 :650-657
[4]   Development of soft magnetic composites for low-loss applications [J].
Gilbert, IP ;
Moorthy, V ;
Bull, SJ ;
Evans, JT ;
Jack, AG .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 :232-234
[5]   Measurement and modelling of magnetic properties of soft magnetic composite material under 2D vector magnetisations [J].
Guo, YG ;
Zhu, JG ;
Zhong, JJ .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 302 (01) :14-19
[6]  
HENDRICKS CR, 1991, CERAM B, V70, P817
[7]  
ISHIHARA C, 2005, 4 HIT POWD MET TECHN, P30
[8]  
JACK AG, 1999, P IEEE INT EL MACH D
[9]   Effects of high magnetic field annealing on texture and magnetic properties of FePd [J].
Li, DS ;
Garmestani, H ;
Yan, SS ;
Elkawni, M ;
Bacaltchuk, MB ;
Schneider-Muntau, HJ ;
Liu, JP ;
Saha, S ;
Barnard, JA .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 281 (2-3) :272-275
[10]  
Lifshin E., 1999, XRAY CHARACTERIZATIO