Improved electromagnetic shielding properties of SiC/SiBCN modified by SiC nanowires

Hailong Qin; Yongsheng Liu; Fang Ye; Jing Wang; Xiaoqiang Li; Laifei Cheng

doi:10.1016/j.ceramint.2019.08.156

Improved electromagnetic shielding properties of SiC/SiBCN modified by SiC nanowires

Hailong Qin, Yongsheng Liu, Fang Ye, Jing Wang, Xiaoqiang Li, Laifei Cheng

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

19 Scopus citations

Abstract

SiC_nw-SiC/SiBCN composites were prepared through chemical vapor infiltration. Electromagnetic interference (EMI) shielding effectiveness (SE) provided by SiC_nw-SiC/SiBCN composites with variable SiC_nw loading was investigated at frequencies ranging from 8.2 to 12.4 GHz. SE_A of the material was observed to increase significantly with increased SiC_nw loading. SE_A value increased by 22.4% compared to plain SiC/SiBCN composites at SiC_nw loading of 6.74 wt%, reaching a maximum of 9.3 dB. SE_R values of the specimens varied from 4.3 to 5.4 dB, while SE_T increased from 11.9 dB to 14.7 dB as SiC_nw loading increased from 0 to 6.74 wt%. Absorption was identified as the dominant EMI shielding mechanism.

Original language	English
Pages (from-to)	24375-24381
Number of pages	7
Journal	Ceramics International
Volume	45
Issue number	18
DOIs	https://doi.org/10.1016/j.ceramint.2019.08.156
State	Published - 15 Dec 2019

Keywords

Chemical vapor infiltration
Electromagnetic shielding
Fiber reinforced matrix composites
SiC nanowires

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10.1016/j.ceramint.2019.08.156

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title = "Improved electromagnetic shielding properties of SiC/SiBCN modified by SiC nanowires",

abstract = "SiCnw-SiC/SiBCN composites were prepared through chemical vapor infiltration. Electromagnetic interference (EMI) shielding effectiveness (SE) provided by SiCnw-SiC/SiBCN composites with variable SiCnw loading was investigated at frequencies ranging from 8.2 to 12.4 GHz. SEA of the material was observed to increase significantly with increased SiCnw loading. SEA value increased by 22.4% compared to plain SiC/SiBCN composites at SiCnw loading of 6.74 wt%, reaching a maximum of 9.3 dB. SER values of the specimens varied from 4.3 to 5.4 dB, while SET increased from 11.9 dB to 14.7 dB as SiCnw loading increased from 0 to 6.74 wt%. Absorption was identified as the dominant EMI shielding mechanism.",

keywords = "Chemical vapor infiltration, Electromagnetic shielding, Fiber reinforced matrix composites, SiC nanowires",

author = "Hailong Qin and Yongsheng Liu and Fang Ye and Jing Wang and Xiaoqiang Li and Laifei Cheng",

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year = "2019",

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doi = "10.1016/j.ceramint.2019.08.156",

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T1 - Improved electromagnetic shielding properties of SiC/SiBCN modified by SiC nanowires

AU - Qin, Hailong

AU - Liu, Yongsheng

AU - Ye, Fang

AU - Wang, Jing

AU - Li, Xiaoqiang

AU - Cheng, Laifei

PY - 2019/12/15

Y1 - 2019/12/15

N2 - SiCnw-SiC/SiBCN composites were prepared through chemical vapor infiltration. Electromagnetic interference (EMI) shielding effectiveness (SE) provided by SiCnw-SiC/SiBCN composites with variable SiCnw loading was investigated at frequencies ranging from 8.2 to 12.4 GHz. SEA of the material was observed to increase significantly with increased SiCnw loading. SEA value increased by 22.4% compared to plain SiC/SiBCN composites at SiCnw loading of 6.74 wt%, reaching a maximum of 9.3 dB. SER values of the specimens varied from 4.3 to 5.4 dB, while SET increased from 11.9 dB to 14.7 dB as SiCnw loading increased from 0 to 6.74 wt%. Absorption was identified as the dominant EMI shielding mechanism.

AB - SiCnw-SiC/SiBCN composites were prepared through chemical vapor infiltration. Electromagnetic interference (EMI) shielding effectiveness (SE) provided by SiCnw-SiC/SiBCN composites with variable SiCnw loading was investigated at frequencies ranging from 8.2 to 12.4 GHz. SEA of the material was observed to increase significantly with increased SiCnw loading. SEA value increased by 22.4% compared to plain SiC/SiBCN composites at SiCnw loading of 6.74 wt%, reaching a maximum of 9.3 dB. SER values of the specimens varied from 4.3 to 5.4 dB, while SET increased from 11.9 dB to 14.7 dB as SiCnw loading increased from 0 to 6.74 wt%. Absorption was identified as the dominant EMI shielding mechanism.

KW - Chemical vapor infiltration

KW - Electromagnetic shielding

KW - Fiber reinforced matrix composites

KW - SiC nanowires

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U2 - 10.1016/j.ceramint.2019.08.156

DO - 10.1016/j.ceramint.2019.08.156

M3 - 文章

AN - SCOPUS:85070819338

SN - 0272-8842

VL - 45

SP - 24375

EP - 24381

JO - Ceramics International

JF - Ceramics International

IS - 18

ER -

Improved electromagnetic shielding properties of SiC/SiBCN modified by SiC nanowires

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Keywords

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