Synthesis mechanism of different morphological SiC and its electromagnetic absorption performance

Jinyan Wang, Jiaqi Tao, Jintang Zhou*, Harm Van Zalinge, Zhengjun Yao, Li Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This article presents a facile synthesis of different morphological silicon carbides (SiC) absorbers by adjusting the weight ratio of carbon spheres to waste glass powder. With the decreased proportion of waste glass powder, the diffusion rate of SiO vapour decreases, which is lower than the deposition rate, leading to the morphology change from fluffy spheres to nanofibers. The electromagnetic wave (EMW) absorbing results show that the fluffy spherical SiC possesses the optimal EMW absorption performance with an effective absorption bandwidth 4.81 GHz at 1.6 mm, mainly due to stacking faults-induced polarisation loss and conductive loss. By comparison, the EMW absorbing ability of SiC obtained through wasted glass powder is better than the normal SiC prepared through commercial SiO2. Thus, the waste glass has shown great promise as silicon resources to prepare high-performance SiC absorbers.

Original languageEnglish
Article number113328
JournalMaterials Characterization
Volume205
DOIs
Publication statusPublished - Nov 2023

Keywords

  • Electromagnetic absorbing performance
  • SiC absorber
  • Stacking faults
  • Synthesis mechanism
  • Waste glass powder

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