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Title: Microstructure and soft magnetic properties of nanocrystalline Fe-Si powders
Authors: Ding, J. 
Li, Y. 
Chen, L.F.
Deng, C.R.
Shi, Y. 
Chow, Y.S.
Gang, T.B.
Issue Date: 16-Jan-2001
Citation: Ding, J., Li, Y., Chen, L.F., Deng, C.R., Shi, Y., Chow, Y.S., Gang, T.B. (2001-01-16). Microstructure and soft magnetic properties of nanocrystalline Fe-Si powders. Journal of Alloys and Compounds 314 (1-2) : 262-267. ScholarBank@NUS Repository.
Abstract: In this work, fine Fe-Si powders with a nanocrystalline structure were prepared by mechanical alloying (high-energy ball milling) and subsequent heat treatment (in order to optimize their magnetic properties). Good soft magnetic properties were obtained in mechanically alloyed Fe-Si powders. The Fe75Si25 powder annealed at 450 °C possessed a magnetization of 149 Am2/kg and a coercivity of 0.2 kA/m. The coercivity model for soft magnetic nanocrystalline materials could be well applied to the Fe-Si powders in this work. The mechanically alloyed Fe-Si possessed significantly higher magnetic permeability than that of commercially available Fe-Si powder. The permeability of the mechanically alloyed Fe75Si25 powder was comparable with that of mechanically alloyed pure Fe powder. Considering of lower density and better chemical stability of Fe-Si, the mechanically alloyed Fe-Si may be interesting for soft magnetic application including magnetic shielding and electromagnetic noise suppression.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
DOI: 10.1016/S0925-8388(00)01234-2
Appears in Collections:Staff Publications

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