Mechanical and dielectric properties of SiCf/BN/SiBCN composites via different synthesis technologies

Chaokun Song; Xiaofei Liu; Fang Ye; Yongsheng Liu; Laifei Cheng

doi:10.1016/j.jeurceramsoc.2019.05.033

Mechanical and dielectric properties of SiC_f/BN/SiBCN composites via different synthesis technologies

Chaokun Song, Xiaofei Liu, Fang Ye, Yongsheng Liu, Laifei Cheng

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

36 引用（Scopus）

摘要

SiC fibers reinforced SiBCN ceramic matrix composites (SiC_f/BN/SiBCN composites) were synthesized by direct chemical vapor infiltration (CVI), polymer infiltration pyrolysis (PIP) or chemical vapor infiltration combined with polymer infiltration pyrolysis (CVI + PIP). It is shown that the insertion of a continuous and dense SiBCN matrix via the CVI process improves the flexural strength and modulus. Interface debonding and fiber pullout happened with 50–100 nm BN interface in CVI and CVI + PIP SiC_f/BN/SiBCN composites. The relative complex permittivity was measured in X-band. Higher ε′′ values in CVI-containing composites can be observed, which can be attributed to the accumulation of C and SiC phases and a multilayer matrix. Strong electromagnetic wave attenuation ability was obtained with high dielectric loss.

源语言	英语
页（从-至）	4417-4423
页数	7
期刊	Journal of the European Ceramic Society
卷	39
期	14
DOI	https://doi.org/10.1016/j.jeurceramsoc.2019.05.033
出版状态	已出版 - 11月 2019

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10.1016/j.jeurceramsoc.2019.05.033

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title = "Mechanical and dielectric properties of SiCf/BN/SiBCN composites via different synthesis technologies",

abstract = "SiC fibers reinforced SiBCN ceramic matrix composites (SiCf/BN/SiBCN composites) were synthesized by direct chemical vapor infiltration (CVI), polymer infiltration pyrolysis (PIP) or chemical vapor infiltration combined with polymer infiltration pyrolysis (CVI + PIP). It is shown that the insertion of a continuous and dense SiBCN matrix via the CVI process improves the flexural strength and modulus. Interface debonding and fiber pullout happened with 50–100 nm BN interface in CVI and CVI + PIP SiCf/BN/SiBCN composites. The relative complex permittivity was measured in X-band. Higher ε′′ values in CVI-containing composites can be observed, which can be attributed to the accumulation of C and SiC phases and a multilayer matrix. Strong electromagnetic wave attenuation ability was obtained with high dielectric loss.",

keywords = "CVI, Dielectric property, Flexural strength, PIP, SiC/BN/SiBCN composites",

author = "Chaokun Song and Xiaofei Liu and Fang Ye and Yongsheng Liu and Laifei Cheng",

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

year = "2019",

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doi = "10.1016/j.jeurceramsoc.2019.05.033",

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T1 - Mechanical and dielectric properties of SiCf/BN/SiBCN composites via different synthesis technologies

AU - Song, Chaokun

AU - Liu, Xiaofei

AU - Ye, Fang

AU - Liu, Yongsheng

AU - Cheng, Laifei

PY - 2019/11

Y1 - 2019/11

N2 - SiC fibers reinforced SiBCN ceramic matrix composites (SiCf/BN/SiBCN composites) were synthesized by direct chemical vapor infiltration (CVI), polymer infiltration pyrolysis (PIP) or chemical vapor infiltration combined with polymer infiltration pyrolysis (CVI + PIP). It is shown that the insertion of a continuous and dense SiBCN matrix via the CVI process improves the flexural strength and modulus. Interface debonding and fiber pullout happened with 50–100 nm BN interface in CVI and CVI + PIP SiCf/BN/SiBCN composites. The relative complex permittivity was measured in X-band. Higher ε′′ values in CVI-containing composites can be observed, which can be attributed to the accumulation of C and SiC phases and a multilayer matrix. Strong electromagnetic wave attenuation ability was obtained with high dielectric loss.

AB - SiC fibers reinforced SiBCN ceramic matrix composites (SiCf/BN/SiBCN composites) were synthesized by direct chemical vapor infiltration (CVI), polymer infiltration pyrolysis (PIP) or chemical vapor infiltration combined with polymer infiltration pyrolysis (CVI + PIP). It is shown that the insertion of a continuous and dense SiBCN matrix via the CVI process improves the flexural strength and modulus. Interface debonding and fiber pullout happened with 50–100 nm BN interface in CVI and CVI + PIP SiCf/BN/SiBCN composites. The relative complex permittivity was measured in X-band. Higher ε′′ values in CVI-containing composites can be observed, which can be attributed to the accumulation of C and SiC phases and a multilayer matrix. Strong electromagnetic wave attenuation ability was obtained with high dielectric loss.

KW - CVI

KW - Dielectric property

KW - Flexural strength

KW - PIP

KW - SiC/BN/SiBCN composites

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VL - 39

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JF - Journal of the European Ceramic Society

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Mechanical and dielectric properties of SiCf/BN/SiBCN composites via different synthesis technologies

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Mechanical and dielectric properties of SiC_f/BN/SiBCN composites via different synthesis technologies