Electromagnetic shielding properties of carbon-rich chemical vapor infiltration-prone silicon carbide matrix composites

Daoyang Han; Hui Mei; Shanshan Xiao; Laifei Cheng

doi:10.1111/jace.15365

Electromagnetic shielding properties of carbon-rich chemical vapor infiltration-prone silicon carbide matrix composites

Daoyang Han, Hui Mei, Shanshan Xiao, Laifei Cheng

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

18 Scopus citations

Abstract

This study focuses on the electromagnetic interference shielding effectiveness (EMI SE) of SiC nanowire/SiC ceramic composites (SiC_nw/SiC) manufactured by chemical vapor infiltration of SiC_nw aerogels with carbon-rich SiC. The total EMI SE of a 1.0 mm thick ceramic composite specimen with density of only 2.68 g/cm³, was found to be 43-44 dB, which indicates an excellent EM shielding capability of the ceramic composite corresponding to blocking of 99.99% of the incident EM signal. It was found that the carbon-rich CVI-SiC matrix possess excellent EM shielding properties, therefore, the CVI-SiC CMCs themselves possess an excellent EM shielding property as a result of the carbon-rich SiC matrix.

Original language	English
Pages (from-to)	1991-1998
Number of pages	8
Journal	Journal of the American Ceramic Society
Volume	101
Issue number	5
DOIs	https://doi.org/10.1111/jace.15365
State	Published - May 2018

Keywords

aerogel
carbon
chemical vapor infiltration
electromagnetic properties
silicon carbide

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10.1111/jace.15365

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title = "Electromagnetic shielding properties of carbon-rich chemical vapor infiltration-prone silicon carbide matrix composites",

abstract = "This study focuses on the electromagnetic interference shielding effectiveness (EMI SE) of SiC nanowire/SiC ceramic composites (SiCnw/SiC) manufactured by chemical vapor infiltration of SiCnw aerogels with carbon-rich SiC. The total EMI SE of a 1.0 mm thick ceramic composite specimen with density of only 2.68 g/cm3, was found to be 43-44 dB, which indicates an excellent EM shielding capability of the ceramic composite corresponding to blocking of 99.99% of the incident EM signal. It was found that the carbon-rich CVI-SiC matrix possess excellent EM shielding properties, therefore, the CVI-SiC CMCs themselves possess an excellent EM shielding property as a result of the carbon-rich SiC matrix.",

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AU - Han, Daoyang

AU - Mei, Hui

AU - Xiao, Shanshan

AU - Cheng, Laifei

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Y1 - 2018/5

N2 - This study focuses on the electromagnetic interference shielding effectiveness (EMI SE) of SiC nanowire/SiC ceramic composites (SiCnw/SiC) manufactured by chemical vapor infiltration of SiCnw aerogels with carbon-rich SiC. The total EMI SE of a 1.0 mm thick ceramic composite specimen with density of only 2.68 g/cm3, was found to be 43-44 dB, which indicates an excellent EM shielding capability of the ceramic composite corresponding to blocking of 99.99% of the incident EM signal. It was found that the carbon-rich CVI-SiC matrix possess excellent EM shielding properties, therefore, the CVI-SiC CMCs themselves possess an excellent EM shielding property as a result of the carbon-rich SiC matrix.

AB - This study focuses on the electromagnetic interference shielding effectiveness (EMI SE) of SiC nanowire/SiC ceramic composites (SiCnw/SiC) manufactured by chemical vapor infiltration of SiCnw aerogels with carbon-rich SiC. The total EMI SE of a 1.0 mm thick ceramic composite specimen with density of only 2.68 g/cm3, was found to be 43-44 dB, which indicates an excellent EM shielding capability of the ceramic composite corresponding to blocking of 99.99% of the incident EM signal. It was found that the carbon-rich CVI-SiC matrix possess excellent EM shielding properties, therefore, the CVI-SiC CMCs themselves possess an excellent EM shielding property as a result of the carbon-rich SiC matrix.

KW - aerogel

KW - carbon

KW - chemical vapor infiltration

KW - electromagnetic properties

KW - silicon carbide

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M3 - 文章

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Electromagnetic shielding properties of carbon-rich chemical vapor infiltration-prone silicon carbide matrix composites

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Keywords

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