Self-healing behavior of 2D C/SiC modified by partial boron carbide matrix after annealing at low temperature in wet oxygen

Si Wei Li; Li Tong Zhang; Yong Sheng Liu; Lai Fei Cheng; Zu De Feng; Xin Gang Luan; Wei Hua Zhang; Wen Bin Yang

doi:10.3724/SP.J.1077.2010.01199

Self-healing behavior of 2D C/SiC modified by partial boron carbide matrix after annealing at low temperature in wet oxygen

Si Wei Li, Li Tong Zhang, Yong Sheng Liu, Lai Fei Cheng, Zu De Feng, Xin Gang Luan, Wei Hua Zhang, Wen Bin Yang

School of Materials Sience and Engineering

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

3 Scopus citations

Abstract

Oxidation behavior of 2D C/SiC composites modified by boron carbide self-sealing matrix was investigated at low temperature of 700°C in wet oxygen. Oxidation tests were conducted under a creep stress of 100 MPa up to 60 h. Microstructural evolution of the modified composites was explored by SEM and TEM. Results show that the modified composites hold better inoxidizability than the conventional C/SiC composites, which is caused by the self-heal of matrix cracks (and the stress enlarged ones) with oxidation induced B₂O₃ and the inhibition of C oxidation. The unoxidized B-C is identified as a coagent of B₂O₃ to fulfill the healing. Healing ability of the modified matrix is preserved in 60 h and is valid for longer periods of time.

Original language	English
Pages (from-to)	1199-1203
Number of pages	5
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	25
Issue number	11
DOIs	https://doi.org/10.3724/SP.J.1077.2010.01199
State	Published - Nov 2010

Keywords

C/SiC composites
CVI B-C
Matrix modification
Self-healing
SEM
TEM

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10.3724/SP.J.1077.2010.01199

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@article{3d8b255216584e8185f18a8d85a5dcb8,

title = "Self-healing behavior of 2D C/SiC modified by partial boron carbide matrix after annealing at low temperature in wet oxygen",

abstract = "Oxidation behavior of 2D C/SiC composites modified by boron carbide self-sealing matrix was investigated at low temperature of 700°C in wet oxygen. Oxidation tests were conducted under a creep stress of 100 MPa up to 60 h. Microstructural evolution of the modified composites was explored by SEM and TEM. Results show that the modified composites hold better inoxidizability than the conventional C/SiC composites, which is caused by the self-heal of matrix cracks (and the stress enlarged ones) with oxidation induced B2O3 and the inhibition of C oxidation. The unoxidized B-C is identified as a coagent of B2O3 to fulfill the healing. Healing ability of the modified matrix is preserved in 60 h and is valid for longer periods of time.",

keywords = "C/SiC composites, CVI B-C, Matrix modification, Self-healing, SEM, TEM",

author = "Li, {Si Wei} and Zhang, {Li Tong} and Liu, {Yong Sheng} and Cheng, {Lai Fei} and Feng, {Zu De} and Luan, {Xin Gang} and Zhang, {Wei Hua} and Yang, {Wen Bin}",

year = "2010",

month = nov,

doi = "10.3724/SP.J.1077.2010.01199",

language = "英语",

volume = "25",

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journal = "Wuji Cailiao Xuebao/Journal of Inorganic Materials",

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TY - JOUR

T1 - Self-healing behavior of 2D C/SiC modified by partial boron carbide matrix after annealing at low temperature in wet oxygen

AU - Li, Si Wei

AU - Zhang, Li Tong

AU - Liu, Yong Sheng

AU - Cheng, Lai Fei

AU - Feng, Zu De

AU - Luan, Xin Gang

AU - Zhang, Wei Hua

AU - Yang, Wen Bin

PY - 2010/11

Y1 - 2010/11

N2 - Oxidation behavior of 2D C/SiC composites modified by boron carbide self-sealing matrix was investigated at low temperature of 700°C in wet oxygen. Oxidation tests were conducted under a creep stress of 100 MPa up to 60 h. Microstructural evolution of the modified composites was explored by SEM and TEM. Results show that the modified composites hold better inoxidizability than the conventional C/SiC composites, which is caused by the self-heal of matrix cracks (and the stress enlarged ones) with oxidation induced B2O3 and the inhibition of C oxidation. The unoxidized B-C is identified as a coagent of B2O3 to fulfill the healing. Healing ability of the modified matrix is preserved in 60 h and is valid for longer periods of time.

AB - Oxidation behavior of 2D C/SiC composites modified by boron carbide self-sealing matrix was investigated at low temperature of 700°C in wet oxygen. Oxidation tests were conducted under a creep stress of 100 MPa up to 60 h. Microstructural evolution of the modified composites was explored by SEM and TEM. Results show that the modified composites hold better inoxidizability than the conventional C/SiC composites, which is caused by the self-heal of matrix cracks (and the stress enlarged ones) with oxidation induced B2O3 and the inhibition of C oxidation. The unoxidized B-C is identified as a coagent of B2O3 to fulfill the healing. Healing ability of the modified matrix is preserved in 60 h and is valid for longer periods of time.

KW - C/SiC composites

KW - CVI B-C

KW - Matrix modification

KW - Self-healing

KW - SEM

KW - TEM

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U2 - 10.3724/SP.J.1077.2010.01199

DO - 10.3724/SP.J.1077.2010.01199

M3 - 文章

AN - SCOPUS:78650440297

SN - 1000-324X

VL - 25

SP - 1199

EP - 1203

JO - Wuji Cailiao Xuebao/Journal of Inorganic Materials

JF - Wuji Cailiao Xuebao/Journal of Inorganic Materials

IS - 11

ER -

Self-healing behavior of 2D C/SiC modified by partial boron carbide matrix after annealing at low temperature in wet oxygen

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Keywords

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