Affiliation:
1. R&D Center
2. Korea Institute of Science and Technology
3. Cheongju University
Abstract
Eventhough Fe-6.5 wt.% Si alloy shows excellent magnetic properties, magnetic
components made of the alloy with the composition are not totally commercialized because of its
extremely low ductility. In order to overcome this demerit of alloy, 6.7 wt.% Si alloy powders were
produced by gas atomization and then post-processed to form magnetic cores. By doing so, the total
core loss could be minimized by reducing both hysteresis and eddy current loss, which were
attributed to both grain size adjustment and particle size control. From our experiments, we were
able to achive a core loss of 390 mW/cm3 at an induction of 0.1 T and 50 kHz through proper
processes and a permeability μeff of 68 at low frequency was kept up to 700 kHz. These properties
are compatable with the properties of well-known soft magnetic materials such as Fe-Si-Al and Ni-
Fe alloys. From the above results, it can be concluded that Fe-Si alloy powders with high Si content
have very high potential for the commercialization and application of the core.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference8 articles.
1. H. Horie, K. Ochiai, I. Arima and M. Morita, J. Japan Inst. Metals, V. 50, No. 2 (1986) 127.
2. J. Ding, Y. Li, L. f. Chen, C.R. Deng, Y. Shi, T.S. Chow and T.B. Gang, J. alloys and Compounds 314 (2001) 262.
3. S. Kunihiro, N. Misao and H. Yasuyuki, JFE Technical Report, No. 4 (2004) 67.
4. G.H. Kim, T.H. Noh, G.B. Choi and K.Y. Kim, J. Appl. Phys., 93 (2003) 7211.
5. G.B. Choi, D.H. Kim, G.H. Kim and K.Y. Kim, Phys. Stat. Sol. (a), 201 (2004) 1866-1870.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献