A new route to fabricate SiB4 modified C/SiC composites

Fengming Shi; Xiaowei Yin; Xiaomeng Fan; Laifei Cheng; Litong Zhang

doi:10.1016/j.jeurceramsoc.2010.02.028

A new route to fabricate SiB₄ modified C/SiC composites

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

41 Scopus citations

Abstract

In order to improve the oxidation and thermal shock resistance of 2D C/SiC composites, dense SiB₄-SiC matrix was in situ formed in 2D C/SiC composites by a joint process of slurry infiltration and liquid silicon infiltration. The synthesis mechanism of SiB₄ was investigated by analyzing the reaction products of B₄C-Si system. Compared with the porous C/SiC composites, the density of C/SiC-SiB₄ composites increased from 1.63 to 2.23g/cm³ and the flexural strength increased from 135 to 330MPa. The thermal shock behaviors of C/SiC and C/SiC-SiB₄ composites protected with SiC coating were studied using the method of air quenching. C/SiC-SiB₄ composites displayed good resistance to thermal shock, and retained 95% of the original strength after being quenched in air from 1300°C to room temperature for 60 cycles, which showed less weight loss than C/SiC composite.

Original language	English
Pages (from-to)	1955-1962
Number of pages	8
Journal	Journal of the European Ceramic Society
Volume	30
Issue number	9
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2010.02.028
State	Published - Jul 2010

Keywords

Borides
Carbides
Composites
Fibers
Thermal shock resistance

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10.1016/j.jeurceramsoc.2010.02.028

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title = "A new route to fabricate SiB4 modified C/SiC composites",

abstract = "In order to improve the oxidation and thermal shock resistance of 2D C/SiC composites, dense SiB4-SiC matrix was in situ formed in 2D C/SiC composites by a joint process of slurry infiltration and liquid silicon infiltration. The synthesis mechanism of SiB4 was investigated by analyzing the reaction products of B4C-Si system. Compared with the porous C/SiC composites, the density of C/SiC-SiB4 composites increased from 1.63 to 2.23g/cm3 and the flexural strength increased from 135 to 330MPa. The thermal shock behaviors of C/SiC and C/SiC-SiB4 composites protected with SiC coating were studied using the method of air quenching. C/SiC-SiB4 composites displayed good resistance to thermal shock, and retained 95\% of the original strength after being quenched in air from 1300°C to room temperature for 60 cycles, which showed less weight loss than C/SiC composite.",

keywords = "Borides, Carbides, Composites, Fibers, Thermal shock resistance",

author = "Fengming Shi and Xiaowei Yin and Xiaomeng Fan and Laifei Cheng and Litong Zhang",

year = "2010",

month = jul,

doi = "10.1016/j.jeurceramsoc.2010.02.028",

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volume = "30",

pages = "1955--1962",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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TY - JOUR

T1 - A new route to fabricate SiB4 modified C/SiC composites

AU - Shi, Fengming

AU - Yin, Xiaowei

AU - Fan, Xiaomeng

AU - Cheng, Laifei

AU - Zhang, Litong

PY - 2010/7

Y1 - 2010/7

N2 - In order to improve the oxidation and thermal shock resistance of 2D C/SiC composites, dense SiB4-SiC matrix was in situ formed in 2D C/SiC composites by a joint process of slurry infiltration and liquid silicon infiltration. The synthesis mechanism of SiB4 was investigated by analyzing the reaction products of B4C-Si system. Compared with the porous C/SiC composites, the density of C/SiC-SiB4 composites increased from 1.63 to 2.23g/cm3 and the flexural strength increased from 135 to 330MPa. The thermal shock behaviors of C/SiC and C/SiC-SiB4 composites protected with SiC coating were studied using the method of air quenching. C/SiC-SiB4 composites displayed good resistance to thermal shock, and retained 95% of the original strength after being quenched in air from 1300°C to room temperature for 60 cycles, which showed less weight loss than C/SiC composite.

AB - In order to improve the oxidation and thermal shock resistance of 2D C/SiC composites, dense SiB4-SiC matrix was in situ formed in 2D C/SiC composites by a joint process of slurry infiltration and liquid silicon infiltration. The synthesis mechanism of SiB4 was investigated by analyzing the reaction products of B4C-Si system. Compared with the porous C/SiC composites, the density of C/SiC-SiB4 composites increased from 1.63 to 2.23g/cm3 and the flexural strength increased from 135 to 330MPa. The thermal shock behaviors of C/SiC and C/SiC-SiB4 composites protected with SiC coating were studied using the method of air quenching. C/SiC-SiB4 composites displayed good resistance to thermal shock, and retained 95% of the original strength after being quenched in air from 1300°C to room temperature for 60 cycles, which showed less weight loss than C/SiC composite.

KW - Borides

KW - Carbides

KW - Composites

KW - Fibers

KW - Thermal shock resistance

UR - https://www.scopus.com/pages/publications/77952422741

U2 - 10.1016/j.jeurceramsoc.2010.02.028

DO - 10.1016/j.jeurceramsoc.2010.02.028

M3 - 文章

AN - SCOPUS:77952422741

SN - 0955-2219

VL - 30

SP - 1955

EP - 1962

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 9

ER -

A new route to fabricate SiB₄ modified C/SiC composites

Abstract

Keywords

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