Abstract
The effects of heat treatment on crystallization and magnetic properties of (Fe0.95Mn0.05)75Si10B15 amorphous alloy was investigated.The (Fe0.95Mn0.05)75Si10B15 ingot was arc-melted under argon atmosphere. A single roller melt-spinning method was employed to produce the alloy ribbon. The microstructure of alloy ribbon was shown to be amorphous thermal properties was measured by differential scanning calorimetry(DSC) the Tg=782K and Tx=816K.the heat treatment is different temperature holding 10min. the microstructure of alloy ribbons at 730K was shown to be amorphous, at 800K have Fe3Si、Fe2MnSi crystals to form. At 840K have Fe3Si、Fe2MnSi、Fe2B crystals to form. the saturation magnetization (Ms) of (Fe0.95Mn0.05)75Si10B15 alloy ribbons decreased from 1.437 T to 1.37 T with increasing holding temperature from no heat treatment to 840K.and the coercive force (Hc) increased from 17.592A/m to 1212.467A/m with increasing holding temperature from no heat treatment to 840K. and the curie temperature (Tc) increased from 667K to 896K with increasing holding temperature from no heat treatment to 840K.For the heat treatment is 800K at different holding time alloy ribbons. the microstructure of alloy ribbon at holding 10min have Fe3Si、Fe2MnSi crystals to form, At holding 20min have Fe3Si、Fe2MnSi、Fe2B crystals to form. At holding 40min have Fe3Si、Fe2MnSi、Fe2B crystals to form. the Ms decreased from 1.437 T to 1.35 T with increasing holding time from no heat treatment to 40min. Hc increased from 17.592A/m to 1340.623A/m with increasing holding time from no heat treatment to 40min. and the Tc increased from 667K to 891K with increasing holding time from no heat treatment to 40min.
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