MAGNETIC PROPERTIES OF NANOCRYSTALLINE (Fe,Co)-B-Al-M (M=Nb/Mo/Ta) ALLOYS

  • Kang, D.B. (Department of Metallurgical Engineering, Chungnom National University) ;
  • Cho, W.S. (Department of Metallurgical Engineering, Chungnom National University) ;
  • Kim, T.K. (Department of Metallurgical Engineering, Chungnom National University) ;
  • Cho, Y.S. (Korea Research Institute of Standards and Science)
  • Published : 1995.10.01

Abstract

Soft magnetic properties of Fe-based (Fe,Co)-B-Al-M (M=Nb, Mo or Ta) nanocrystalline alloy have been investigated. The alloy obtained directly form the rapid solidification process. Microstructure of the alloy is a mixtu re of ultrafine bcc Fe(Co) nanocrystallines and a small amount of retained amorphous phase. Heat treatment of as-prepared alloys improves soft magnetic properties in high frequency range. ${(Fe_{.85}Co_{.15})}_{70}B_{18}Al_{10}Ta_{6}$ alloy alloy annealed at $500^{\circ}C$ for 1 h shows the most improved soth magnetic properties among the alloy examined. Average grain size of the nanocystalline is about 10 nm.

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References

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