Fabrication of Si-B-C modified C/C-SiC composite by liquid silicon infiltration

Jiangong Liu; Xiaowei Yin; Laifei Cheng; Litong Zhang; Qin Wang

Fabrication of Si-B-C modified C/C-SiC composite by liquid silicon infiltration

Jiangong Liu, Xiaowei Yin, Laifei Cheng, Litong Zhang, Qin Wang

School of Materials Sience and Engineering

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

2 Scopus citations

Abstract

In order to reduce the content of residual Si generated in the process of liquid silicon infiltration, B₁₂(C, Si, B)₃ modified C/C-SiC composite was prepared by a joint process of slurry impregnation and liquid silicon infiltration. By analyzing the products of B₄C-Si system with different B₄C/Si molar ratios after sintered at different temperatures, the formation condition of B₁₂(C, Si, B)₃ was studied. The results indicate that B₄C starts to react with Si at 1300 °C, leading to the formation of a small amount of B₁₂(C, Si, B)₃ and SiC. The amount of B₁₂(C, Si, B)₃ generated in the reaction increases with increasing sintering temperature. The sintering product of B₄C-Si system with a B₄C/Si molar ratio of 3:1 at 1500 °C is composed of B₁₂(C, Si, B)₃ and SiC. The C/C-SiC composite fabricated by liquid silicon infiltration is composed of amorphous C, β-SiC and B₁₂(C, Si, B)₃, and no residual Si is detected.

Original language	English
Pages (from-to)	78-82
Number of pages	5
Journal	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume	29
Issue number	6
State	Published - Dec 2012

Keywords

B(C, Si, B)
C/C-SiC
Composites
Liquid silicon infiltration
Slurry impregnation

Cite this

@article{c450c3918e9743afb326ae8598527f95,

title = "Fabrication of Si-B-C modified C/C-SiC composite by liquid silicon infiltration",

abstract = "In order to reduce the content of residual Si generated in the process of liquid silicon infiltration, B12(C, Si, B)3 modified C/C-SiC composite was prepared by a joint process of slurry impregnation and liquid silicon infiltration. By analyzing the products of B4C-Si system with different B4C/Si molar ratios after sintered at different temperatures, the formation condition of B12(C, Si, B)3 was studied. The results indicate that B4C starts to react with Si at 1300 °C, leading to the formation of a small amount of B12(C, Si, B)3 and SiC. The amount of B12(C, Si, B)3 generated in the reaction increases with increasing sintering temperature. The sintering product of B4C-Si system with a B4C/Si molar ratio of 3:1 at 1500 °C is composed of B12(C, Si, B)3 and SiC. The C/C-SiC composite fabricated by liquid silicon infiltration is composed of amorphous C, β-SiC and B12(C, Si, B)3, and no residual Si is detected.",

keywords = "B(C, Si, B), C/C-SiC, Composites, Liquid silicon infiltration, Slurry impregnation",

author = "Jiangong Liu and Xiaowei Yin and Laifei Cheng and Litong Zhang and Qin Wang",

year = "2012",

month = dec,

language = "英语",

volume = "29",

pages = "78--82",

journal = "Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica",

issn = "1000-3851",

publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

number = "6",

}

TY - JOUR

T1 - Fabrication of Si-B-C modified C/C-SiC composite by liquid silicon infiltration

AU - Liu, Jiangong

AU - Yin, Xiaowei

AU - Cheng, Laifei

AU - Zhang, Litong

AU - Wang, Qin

PY - 2012/12

Y1 - 2012/12

N2 - In order to reduce the content of residual Si generated in the process of liquid silicon infiltration, B12(C, Si, B)3 modified C/C-SiC composite was prepared by a joint process of slurry impregnation and liquid silicon infiltration. By analyzing the products of B4C-Si system with different B4C/Si molar ratios after sintered at different temperatures, the formation condition of B12(C, Si, B)3 was studied. The results indicate that B4C starts to react with Si at 1300 °C, leading to the formation of a small amount of B12(C, Si, B)3 and SiC. The amount of B12(C, Si, B)3 generated in the reaction increases with increasing sintering temperature. The sintering product of B4C-Si system with a B4C/Si molar ratio of 3:1 at 1500 °C is composed of B12(C, Si, B)3 and SiC. The C/C-SiC composite fabricated by liquid silicon infiltration is composed of amorphous C, β-SiC and B12(C, Si, B)3, and no residual Si is detected.

AB - In order to reduce the content of residual Si generated in the process of liquid silicon infiltration, B12(C, Si, B)3 modified C/C-SiC composite was prepared by a joint process of slurry impregnation and liquid silicon infiltration. By analyzing the products of B4C-Si system with different B4C/Si molar ratios after sintered at different temperatures, the formation condition of B12(C, Si, B)3 was studied. The results indicate that B4C starts to react with Si at 1300 °C, leading to the formation of a small amount of B12(C, Si, B)3 and SiC. The amount of B12(C, Si, B)3 generated in the reaction increases with increasing sintering temperature. The sintering product of B4C-Si system with a B4C/Si molar ratio of 3:1 at 1500 °C is composed of B12(C, Si, B)3 and SiC. The C/C-SiC composite fabricated by liquid silicon infiltration is composed of amorphous C, β-SiC and B12(C, Si, B)3, and no residual Si is detected.

KW - B(C, Si, B)

KW - C/C-SiC

KW - Composites

KW - Liquid silicon infiltration

KW - Slurry impregnation

UR - http://www.scopus.com/inward/record.url?scp=84871977787&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:84871977787

SN - 1000-3851

VL - 29

SP - 78

EP - 82

JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

IS - 6

ER -

Fabrication of Si-B-C modified C/C-SiC composite by liquid silicon infiltration

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