Annealing and dipping paint curing process of high saturation magnetic induction Fe82Si3.8B13.9C0.3 amorphous core

doi:10.13251/j.issn.0254-6051.2021.02.011

Abstract

Abstract: Effects of different annealing and dipping paint curing processes on the loss and magnetic properties of the Fe₈₂Si_3.8B_13.9C_0.3 amorphous alloy toroidal core were studied and compared with 1K101 alloy core. The results indicate that the optimum annealing temperature of the Fe₈₂Si_3.8B_13.9C_0.3 alloy core is lower than that of 1K101 alloy, and the lowest temperature is 330 ℃ in longitudinal magnetic annealing. Longitudinal annealed Fe₈₂Si_3.8B_13.9C_0.3 alloy core has higher saturation magnetic induction, B_{3500 A/m}=1.611 T. After annealing at 350 ℃ without magnetic field, the loss of the longitudinal annealed Fe₈₂Si_3.8B_13.9C_0.3 alloy is slightly higher than that of 1K101 alloy, P_{50 Hz, 1.4 T}=0.360 W/kg. After longitudinal magnetic annealing at 330 ℃, the loss is also higher than that of the 1K101 alloy, P_{50 Hz, 1.4 T}=0.257 W/kg. After transverse magnetic annealing at 350 ℃, the loss is lower than 1K101 alloy, P_{50 Hz, 1.4 T}=0.163 W/kg. After cured by dipping, the magnetic flux density of the Fe₈₂Si_3.8B_13.9C_0.3 alloy core is 15% higher than that of the 1K101 alloy and B_{800 A/m}=1.341 T. The core loss of the Fe₈₂Si_3.8B_13.9C_0.3 alloy is lower than that of the 1K101 alloy after longitudinal magnetic annealing and dipping paint curing, and the advantage is more obvious with the increase of frequency. When the frequency is higher than 1000 Hz, the loss value of longitudinal magnetic annealed and cured Fe₈₂Si_3.8B_13.9C_0.3 alloy core is lower than that of the uncured core.

Key words: high saturation magnetic induction, amorphous core, magnetic field annealing, dipping paint curing, soft magnetic property, loss

CLC Number:

TG139⁺.8

Song Su, Chen Wenzhi, Zhang Guangqiang, Liu Yang, Zheng Wei, Zhang Qian, Zhou Shaoxiong. Annealing and dipping paint curing process of high saturation magnetic induction Fe₈₂Si_3.8B_13.9C_0.3 amorphous core[J]. Heat Treatment of Metals, 2021, 46(2): 61-65.

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Annealing and dipping paint curing process of high saturation magnetic induction Fe₈₂Si_3.8B_13.9C_0.3 amorphous core

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