Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Effect of Annealing Temperature on Soft Magnetic Properties of Cold Rolled 0.30 mm Thick Fe-6.5wt.%Si Foils

  • Fang, X.S. (State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing) ;
  • Lin, J.P. (State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing) ;
  • Liang, Y.F. (State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing) ;
  • Ye, F. (State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing) ;
  • Zhang, L.Q. (State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing) ;
  • Chen, G.L. (State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing)
  • Received : 2011.04.25
  • Accepted : 2011.05.29
  • Published : 2011.06.30
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Abstract

0.30 mm thick and 90 mm wide thin foils made of Fe-6.5wt.%Si alloy were successfully fabricated by traditional rolling. The as-rolled sheets had good shapes and shining metal luster. The effects of annealing temperature on the magnetic properties of the sheets were investigated. Excellent Dc properties ($H_c$: 11.55 A/m, ${\mu}_m$: 23710, and $B_s$: 1.439 T) were obtained at an annealing temperature of 1453 K for 1.5 h. At low frequencies ($\leq$ 1 kHz), heat treatment temperature has little effect on iron loss which remained at the level of 9.8 W/kg. Annealing at 1273 K for 1.5 h is optimum for frequencies above 5 kHz.

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