Scholarlink

<p>Basalt/FeCoNi composites were fabricated for use as microwave absorbers, leveraging the excellent magnetic properties of FeCoNi and the dielectric properties of basalt. The composites were synthesized through a chemical reduction process, with basalt flakes of different sizes serving as the wave-transmitting substrates. The FeCoNi nanolayers were deposited on the basalt surface and thermally annealed to control crystallinity and optimize the electromagnetic response. The composite materials exhibited a transition from amorphous to mixed BCC/FCC phases as the annealing temperature increased. The optimized sample, unannealed amorphous basalt/FeCoNi-600 (synthesized at room temperature), achieved a minimum reflection loss of −39.05 dB at 4.91 GHz with a 4.85 GHz (RL &lt; −10 dB) effective bandwidth. The microwave absorption performance was attributed to the synergistic effects of conduction loss, interfacial polarization, and magnetic resonance, combined with balanced impedance matching. These results suggest that basalt/FeCoNi composites, with their lightweight and tunable structure, hold significant potential as high-performance microwave absorbers.</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

The FeCoNi nanolayers deposited on wave-transmitting basalt substrates toward excellent microwave absorption

  • 期刊论文

  • 发表日期：

    2026年7月20日

查看全文
  • Zhening Zhang,
  • Jingru Di,
  • Shude Gu,
  • Wei Chen,
  • Yuping Duan

摘要

Basalt/FeCoNi composites were fabricated for use as microwave absorbers, leveraging the excellent magnetic properties of FeCoNi and the dielectric properties of basalt. The composites were synthesized through a chemical reduction process, with basalt flakes of different sizes serving as the wave-transmitting substrates. The FeCoNi nanolayers were deposited on the basalt surface and thermally annealed to control crystallinity and optimize the electromagnetic response. The composite materials exhibited a transition from amorphous to mixed BCC/FCC phases as the annealing temperature increased. The optimized sample, unannealed amorphous basalt/FeCoNi-600 (synthesized at room temperature), achieved a minimum reflection loss of −39.05 dB at 4.91 GHz with a 4.85 GHz (RL < −10 dB) effective bandwidth. The microwave absorption performance was attributed to the synergistic effects of conduction loss, interfacial polarization, and magnetic resonance, combined with balanced impedance matching. These results suggest that basalt/FeCoNi composites, with their lightweight and tunable structure, hold significant potential as high-performance microwave absorbers.