The microstructure and electromagnetic wave absorption properties of near-stoichiometric SiC fibre

Xiaofei Liu; Litong Zhang; Xiaowei Yin; Fang Ye; Yongsheng Liu; Laifei Cheng

doi:10.1016/j.ceramint.2016.11.158

The microstructure and electromagnetic wave absorption properties of near-stoichiometric SiC fibre

Xiaofei Liu, Litong Zhang, Xiaowei Yin, Fang Ye, Yongsheng Liu, Laifei Cheng

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

The microstructure and electromagnetic (EM) properties of near-stoichiometric SiC fibres (with C/Si ratio of 1.125) were analyzed and evaluated in detail. The SiC fibres consisted of β-SiC nanocrystallines and free carbon, and exhibited a uniquely specific skin-core structure with thin carbon layer of 5 nm on their surfaces. The relative complex permittivity increased with the increasing fibre volume fraction from 13 vol% to 27.5 vol%. The imaginary part of permittivity increased from 1.36 to 2.13 at 10 GHz, due to more SiC nanocrystallines and interfaces generating. The EM wave absorption properties were enhanced by the increasing fibre volume fraction and the effective absorption bandwidth was approximately 2.6 GHz when the fibre volume fraction was 27.5 vol%.

Original language	English
Pages (from-to)	3267-3273
Number of pages	7
Journal	Ceramics International
Volume	43
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2016.11.158
State	Published - 15 Feb 2017

Keywords

Dielectric properties
Electromagnetic properties
Microstructure
SiC fibre

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10.1016/j.ceramint.2016.11.158

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title = "The microstructure and electromagnetic wave absorption properties of near-stoichiometric SiC fibre",

abstract = "The microstructure and electromagnetic (EM) properties of near-stoichiometric SiC fibres (with C/Si ratio of 1.125) were analyzed and evaluated in detail. The SiC fibres consisted of β-SiC nanocrystallines and free carbon, and exhibited a uniquely specific skin-core structure with thin carbon layer of 5 nm on their surfaces. The relative complex permittivity increased with the increasing fibre volume fraction from 13 vol% to 27.5 vol%. The imaginary part of permittivity increased from 1.36 to 2.13 at 10 GHz, due to more SiC nanocrystallines and interfaces generating. The EM wave absorption properties were enhanced by the increasing fibre volume fraction and the effective absorption bandwidth was approximately 2.6 GHz when the fibre volume fraction was 27.5 vol%.",

keywords = "Dielectric properties, Electromagnetic properties, Microstructure, SiC fibre",

author = "Xiaofei Liu and Litong Zhang and Xiaowei Yin and Fang Ye and Yongsheng Liu and Laifei Cheng",

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T1 - The microstructure and electromagnetic wave absorption properties of near-stoichiometric SiC fibre

AU - Liu, Xiaofei

AU - Zhang, Litong

AU - Yin, Xiaowei

AU - Ye, Fang

AU - Liu, Yongsheng

AU - Cheng, Laifei

PY - 2017/2/15

Y1 - 2017/2/15

N2 - The microstructure and electromagnetic (EM) properties of near-stoichiometric SiC fibres (with C/Si ratio of 1.125) were analyzed and evaluated in detail. The SiC fibres consisted of β-SiC nanocrystallines and free carbon, and exhibited a uniquely specific skin-core structure with thin carbon layer of 5 nm on their surfaces. The relative complex permittivity increased with the increasing fibre volume fraction from 13 vol% to 27.5 vol%. The imaginary part of permittivity increased from 1.36 to 2.13 at 10 GHz, due to more SiC nanocrystallines and interfaces generating. The EM wave absorption properties were enhanced by the increasing fibre volume fraction and the effective absorption bandwidth was approximately 2.6 GHz when the fibre volume fraction was 27.5 vol%.

AB - The microstructure and electromagnetic (EM) properties of near-stoichiometric SiC fibres (with C/Si ratio of 1.125) were analyzed and evaluated in detail. The SiC fibres consisted of β-SiC nanocrystallines and free carbon, and exhibited a uniquely specific skin-core structure with thin carbon layer of 5 nm on their surfaces. The relative complex permittivity increased with the increasing fibre volume fraction from 13 vol% to 27.5 vol%. The imaginary part of permittivity increased from 1.36 to 2.13 at 10 GHz, due to more SiC nanocrystallines and interfaces generating. The EM wave absorption properties were enhanced by the increasing fibre volume fraction and the effective absorption bandwidth was approximately 2.6 GHz when the fibre volume fraction was 27.5 vol%.

KW - Dielectric properties

KW - Electromagnetic properties

KW - Microstructure

KW - SiC fibre

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DO - 10.1016/j.ceramint.2016.11.158

M3 - 文章

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SN - 0272-8842

VL - 43

SP - 3267

EP - 3273

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

The microstructure and electromagnetic wave absorption properties of near-stoichiometric SiC fibre

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Keywords

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