Effect of heat treatment temperature on microstructure and electromagnetic shielding properties of graphene/SiBCN composites

Yue Wei; Liu Yongsheng; Zhao Mingxi; Ye Fang; Cheng Laifei

doi:10.1016/j.jmst.2019.07.018

Effect of heat treatment temperature on microstructure and electromagnetic shielding properties of graphene/SiBCN composites

Yue Wei, Liu Yongsheng, Zhao Mingxi, Ye Fang, Cheng Laifei

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

19 Scopus citations

Abstract

Three-dimensional (3D) graphene/SiBCN composites (GF/SiBCN) were prepared by depositing SiBCN ceramics in 3D graphene foam via the chemical vapor infiltration technique. The effect of the heat treatment temperature on the microstructure, phase composition, and electromagnetic properties of the GF/SiBCN composite was investigated. The SiBCN ceramics maintained an amorphous structure in the composite below 1400 °C above which the crystallinity of the free carbon phase gradually increased. While the Si₃N₄ and B₄C phases started to crystallize at 1500 °C and their crystallinity increased with temperature, SiC was observed at 1700 °C. The electromagnetic shielding effectiveness of GF/SiBCN increased with the heat treatment temperature.

Original language	English
Pages (from-to)	2897-2905
Number of pages	9
Journal	Journal of Materials Science and Technology
Volume	35
Issue number	12
DOIs	https://doi.org/10.1016/j.jmst.2019.07.018
State	Published - Dec 2019

Keywords

Chemical vapor deposition and infiltration
Electromagnetic shielding effectiveness
Heat treatment
Silicon-Boron carbonitride ceramics

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10.1016/j.jmst.2019.07.018

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title = "Effect of heat treatment temperature on microstructure and electromagnetic shielding properties of graphene/SiBCN composites",

abstract = "Three-dimensional (3D) graphene/SiBCN composites (GF/SiBCN) were prepared by depositing SiBCN ceramics in 3D graphene foam via the chemical vapor infiltration technique. The effect of the heat treatment temperature on the microstructure, phase composition, and electromagnetic properties of the GF/SiBCN composite was investigated. The SiBCN ceramics maintained an amorphous structure in the composite below 1400 °C above which the crystallinity of the free carbon phase gradually increased. While the Si3N4 and B4C phases started to crystallize at 1500 °C and their crystallinity increased with temperature, SiC was observed at 1700 °C. The electromagnetic shielding effectiveness of GF/SiBCN increased with the heat treatment temperature.",

keywords = "Chemical vapor deposition and infiltration, Electromagnetic shielding effectiveness, Heat treatment, Silicon-Boron carbonitride ceramics",

author = "Yue Wei and Liu Yongsheng and Zhao Mingxi and Ye Fang and Cheng Laifei",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = dec,

doi = "10.1016/j.jmst.2019.07.018",

language = "英语",

volume = "35",

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journal = "Journal of Materials Science and Technology",

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TY - JOUR

T1 - Effect of heat treatment temperature on microstructure and electromagnetic shielding properties of graphene/SiBCN composites

AU - Wei, Yue

AU - Yongsheng, Liu

AU - Mingxi, Zhao

AU - Fang, Ye

AU - Laifei, Cheng

PY - 2019/12

Y1 - 2019/12

N2 - Three-dimensional (3D) graphene/SiBCN composites (GF/SiBCN) were prepared by depositing SiBCN ceramics in 3D graphene foam via the chemical vapor infiltration technique. The effect of the heat treatment temperature on the microstructure, phase composition, and electromagnetic properties of the GF/SiBCN composite was investigated. The SiBCN ceramics maintained an amorphous structure in the composite below 1400 °C above which the crystallinity of the free carbon phase gradually increased. While the Si3N4 and B4C phases started to crystallize at 1500 °C and their crystallinity increased with temperature, SiC was observed at 1700 °C. The electromagnetic shielding effectiveness of GF/SiBCN increased with the heat treatment temperature.

AB - Three-dimensional (3D) graphene/SiBCN composites (GF/SiBCN) were prepared by depositing SiBCN ceramics in 3D graphene foam via the chemical vapor infiltration technique. The effect of the heat treatment temperature on the microstructure, phase composition, and electromagnetic properties of the GF/SiBCN composite was investigated. The SiBCN ceramics maintained an amorphous structure in the composite below 1400 °C above which the crystallinity of the free carbon phase gradually increased. While the Si3N4 and B4C phases started to crystallize at 1500 °C and their crystallinity increased with temperature, SiC was observed at 1700 °C. The electromagnetic shielding effectiveness of GF/SiBCN increased with the heat treatment temperature.

KW - Chemical vapor deposition and infiltration

KW - Electromagnetic shielding effectiveness

KW - Heat treatment

KW - Silicon-Boron carbonitride ceramics

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U2 - 10.1016/j.jmst.2019.07.018

DO - 10.1016/j.jmst.2019.07.018

M3 - 文章

AN - SCOPUS:85075190791

SN - 1005-0302

VL - 35

SP - 2897

EP - 2905

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

IS - 12

ER -

Effect of heat treatment temperature on microstructure and electromagnetic shielding properties of graphene/SiBCN composites

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Keywords

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