Scholarlink

<p>Fe-Si/BN soft magnetic composites (SMCs) with layered structure were prepared with flaky Fe-Si/BN powders through low-speed ball milling, molding, and annealing. Effect of annealing temperature on the microstructure and magnetic properties of the layered Fe-Si/BN SMCs was studied. The results showed that structure of the Fe-Si/BN SMCs exhibited good thermal stability. When the annealing temperature increased from 500 to 800&#xa0;°C, the density of the Fe-Si/BN SMCs gradually increased, leading to gradually decreased resistivity and increased dynamic loss. In addition, the increase in annealing temperature is beneficial for eliminating residual stresses within the Fe-Si/BN SMCs, resulting in decreased hysteresis loss and significantly improved effective permeability. Nevertheless, excessively high annealing temperature at 900&#xa0;°C caused sintering and bonding between the flaky Fe-Si powders, which deteriorated the magnetic properties. The layered Fe-Si/BN SMCs annealed at 800&#xa0;°C exhibited good magnetic properties, such as low magnetic loss (82.7 W/kg at 50 kHz and 0.05 T) and remarkably high effective permeability (143 at 100 kHz).</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of annealing temperature on magnetic properties of Fe-Si/BN soft magnetic composites with layered structure

  • 期刊论文

  • 发表日期：

    2025年3月24日

查看全文
  • Xi’an Fan,
  • Qi Jin,
  • Zhenjia Yang,
  • Zhaoyang Wu,
  • Jian Wang,
  • Guangqiang Li,
  • Zigui Luo

摘要

Fe-Si/BN soft magnetic composites (SMCs) with layered structure were prepared with flaky Fe-Si/BN powders through low-speed ball milling, molding, and annealing. Effect of annealing temperature on the microstructure and magnetic properties of the layered Fe-Si/BN SMCs was studied. The results showed that structure of the Fe-Si/BN SMCs exhibited good thermal stability. When the annealing temperature increased from 500 to 800 °C, the density of the Fe-Si/BN SMCs gradually increased, leading to gradually decreased resistivity and increased dynamic loss. In addition, the increase in annealing temperature is beneficial for eliminating residual stresses within the Fe-Si/BN SMCs, resulting in decreased hysteresis loss and significantly improved effective permeability. Nevertheless, excessively high annealing temperature at 900 °C caused sintering and bonding between the flaky Fe-Si powders, which deteriorated the magnetic properties. The layered Fe-Si/BN SMCs annealed at 800 °C exhibited good magnetic properties, such as low magnetic loss (82.7 W/kg at 50 kHz and 0.05 T) and remarkably high effective permeability (143 at 100 kHz).