Enhanced electromagnetic shielding property of C/SiC composites via electrophoretically-deposited CNTs onto SiC coating

Kun Yang, Hui Mei, Daoyang Han, Laifei Cheng

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

The study mainly discusses the improvement of electromagnetic interference shielding effectiveness (EMI SE) of carbon fiber-reinforced silicon carbide (C/SiC) composites by applying carbon nanotube/SiC (CNT/SiC) coating. Electrophoretic deposition (EPD) was used to deposit CNTs on C/SiC composite surface. SiC was infiltrated into open pores of CNT network by chemical vapor infiltration process. The EPD durations were set as 2, 5, 10, and 15 min and a systematic investigations have been conducted on composites under different EPD durations, such as scanning electron microscopy, electric conductivity, as well as EMI SE. Total EMI SE (SET) of composites increased as EPD duration increased. At EDP duration equal to 15 min, SET values were 42–43 dB. Such high values of SET demonstrate that our composites are able to hinder 99.992–99.993% of incident electromagnetic signal.

Original languageEnglish
Pages (from-to)20187-20191
Number of pages5
JournalCeramics International
Volume44
Issue number16
DOIs
StatePublished - Nov 2018

Keywords

  • Carbon fiber/silicon carbide composites
  • Carbon nanotube/silicon carbide coating
  • Chemical vapor infiltration (CVI)
  • Electrodeposition
  • Electromagnetic interference shielding effectiveness (EMI SE)

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