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Simple preparation of high-temperature resistant BN-coated BCN fiber with a porous surface to enhance microwave absorption

  • Zihao Chen
  • , Hao Cai
  • , Zhenkai Zhang
  • , Miao Li
  • , Yewei Zhang
  • , Yu Zhang
  • , Bin Yang
  • , Guanghui Cui
  • , Tao Zhang*
  • , Xiaobo Gong*
  • *Corresponding author for this work
  • School of Materials Science and Engineering, Harbin Institute of Technology Weihai
  • Automotive Engineering College
  • School of Ocean Engineering, Harbin Institute of Technology Weihai

Research output: Contribution to journalArticlepeer-review

Abstract

Addressing this issue has become a significant concern in current research to enhance the performance and thermal stability of carbon electromagnetic wave (EMW) absorption materials. This study synthesizes BN-coated BCN fibers through wet spinning and precursor pyrolysis routes. A porous structure is incorporated between the BN and BCN fiber substrates to enhance EMW absorption performance. The results show that the BN-coated BCN fibers with a porous surface exhibit superior EMW absorption performance with the minimum reflection loss (RLmin) of −46.79 dB and the effective absorption bandwidth (EAB) of 5.5 GHz at 2 mm, almost covering the Ku band. This straightforward co-doping and cost-effective synthesis strategy offers a novel design approach for preparing EMW absorption materials.

Original languageEnglish
Pages (from-to)5630-5638
Number of pages9
JournalCeramics International
Volume51
Issue number5
DOIs
StatePublished - Feb 2025
Externally publishedYes

Keywords

  • BN/BCN fiber
  • Electromagnetic wave absorption
  • High-temperature resistance
  • Porous structure

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