Fabrication of Si 3N 4-SiBC composite ceramic and its excellent electromagnetic properties

Fang Ye; Litong Zhang; Xiaowei Yin; Xinzhang Zuo; Yongsheng Liu; Laifei Cheng

doi:10.1016/j.jeurceramsoc.2012.07.002

Fabrication of Si ₃N ₄-SiBC composite ceramic and its excellent electromagnetic properties

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

39 Scopus citations

Abstract

To obtain better electromagnetic wave absorbing property, it is vitally necessary to develop novel ceramics with not only high dielectric loss but also low dielectric constant. Si ₃N ₄-SiBC, a composite ceramic with such dielectric properties, was fabricated by infiltrating SiBC into porous Si ₃N ₄ ceramic via low pressure chemical vapor infiltration. The high dielectric loss and the low dielectric constant are attributed to the unique microstructure of SiBC, which also leads to a very excellent wave-absorbing property of Si ₃N ₄-SiBC ceramic, attaining a minimal reflection coefficient of -28dB. Besides, the Si ₃N ₄-SiBC ceramic also shows a high mechanical property. Therefore, the Si ₃N ₄-SiBC ceramic exhibits great potential as an excellent functional and structural ceramic.

Original language	English
Pages (from-to)	4025-4029
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	32
Issue number	16
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2012.07.002
State	Published - Dec 2012

Keywords

Carbides
Chemical vapour deposition
Functional applications
Si N
SiC

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10.1016/j.jeurceramsoc.2012.07.002

Cite this

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title = "Fabrication of Si 3N 4-SiBC composite ceramic and its excellent electromagnetic properties",

abstract = "To obtain better electromagnetic wave absorbing property, it is vitally necessary to develop novel ceramics with not only high dielectric loss but also low dielectric constant. Si 3N 4-SiBC, a composite ceramic with such dielectric properties, was fabricated by infiltrating SiBC into porous Si 3N 4 ceramic via low pressure chemical vapor infiltration. The high dielectric loss and the low dielectric constant are attributed to the unique microstructure of SiBC, which also leads to a very excellent wave-absorbing property of Si 3N 4-SiBC ceramic, attaining a minimal reflection coefficient of -28dB. Besides, the Si 3N 4-SiBC ceramic also shows a high mechanical property. Therefore, the Si 3N 4-SiBC ceramic exhibits great potential as an excellent functional and structural ceramic.",

keywords = "Carbides, Chemical vapour deposition, Functional applications, Si N, SiC",

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

year = "2012",

month = dec,

doi = "10.1016/j.jeurceramsoc.2012.07.002",

language = "英语",

volume = "32",

pages = "4025--4029",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

number = "16",

}

TY - JOUR

T1 - Fabrication of Si 3N 4-SiBC composite ceramic and its excellent electromagnetic properties

AU - Ye, Fang

AU - Zhang, Litong

AU - Yin, Xiaowei

AU - Zuo, Xinzhang

AU - Liu, Yongsheng

AU - Cheng, Laifei

PY - 2012/12

Y1 - 2012/12

N2 - To obtain better electromagnetic wave absorbing property, it is vitally necessary to develop novel ceramics with not only high dielectric loss but also low dielectric constant. Si 3N 4-SiBC, a composite ceramic with such dielectric properties, was fabricated by infiltrating SiBC into porous Si 3N 4 ceramic via low pressure chemical vapor infiltration. The high dielectric loss and the low dielectric constant are attributed to the unique microstructure of SiBC, which also leads to a very excellent wave-absorbing property of Si 3N 4-SiBC ceramic, attaining a minimal reflection coefficient of -28dB. Besides, the Si 3N 4-SiBC ceramic also shows a high mechanical property. Therefore, the Si 3N 4-SiBC ceramic exhibits great potential as an excellent functional and structural ceramic.

AB - To obtain better electromagnetic wave absorbing property, it is vitally necessary to develop novel ceramics with not only high dielectric loss but also low dielectric constant. Si 3N 4-SiBC, a composite ceramic with such dielectric properties, was fabricated by infiltrating SiBC into porous Si 3N 4 ceramic via low pressure chemical vapor infiltration. The high dielectric loss and the low dielectric constant are attributed to the unique microstructure of SiBC, which also leads to a very excellent wave-absorbing property of Si 3N 4-SiBC ceramic, attaining a minimal reflection coefficient of -28dB. Besides, the Si 3N 4-SiBC ceramic also shows a high mechanical property. Therefore, the Si 3N 4-SiBC ceramic exhibits great potential as an excellent functional and structural ceramic.

KW - Carbides

KW - Chemical vapour deposition

KW - Functional applications

KW - Si N

KW - SiC

UR - https://www.scopus.com/pages/publications/84866768953

U2 - 10.1016/j.jeurceramsoc.2012.07.002

DO - 10.1016/j.jeurceramsoc.2012.07.002

M3 - 文章

AN - SCOPUS:84866768953

SN - 0955-2219

VL - 32

SP - 4025

EP - 4029

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 16

ER -

Fabrication of Si ₃N ₄-SiBC composite ceramic and its excellent electromagnetic properties

Abstract

Keywords

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