Effect of induced anisotropy on magnetic properties of FeCoNiSiB amorphous alloy

doi:10.13251/j.issn.0254-6051.2021.10.009

Abstract

Abstract: Effects of isothermal tension annealing and transverse magnetic field annealing on anisotropy and magnetic properties of FeCoNiSiB amorphous alloy were investigated. The results show that the alloy exhibits higher DC tolerance property accompanied with higher core loss after isothermal tension annealing, while the alloy has excellent comprehensive soft magnetic properties including high DC tolerance and low core loss after transverse magnetic field annealing. During isothermal tension annealing process, the DC tolerance property of the alloy is improved with the increase of annealing temperature. After annealing at 550 ℃ for 5 min with tensile stress, the DC-bias field intensity H_0.98 of the alloy is 195 A/m and the corresponding core loss P_cm is 7255 W/kg. However, after annealing at 450 ℃ with transverse magnetic field, the DC-bias field intensity H_0.98 is improved to 374 A/m, and the corresponding core loss P_cm is only 200 W/kg. In addition, the 180° stripe magnetic domain structures are charactered after isothermal tension annealing and transverse magnetic field annealing, but the direction of magnetization vector in magnetic domain is parallel and perpendicular to the direction of magnetization respectively.

Key words: amorphous/nanocrystalline alloy, tension annealing, magnetic field annealing, magnetic property, anisotropy

CLC Number:

TG156.21

Liu Tiancheng, Pan Yun, Li Guangmin, Jiao Liguo, Cui Kesheng. Effect of induced anisotropy on magnetic properties of FeCoNiSiB amorphous alloy[J]. Heat Treatment of Metals, 2021, 46(10): 53-57.

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