Effect of carbon contents on microstructure of B4C/SiC composites

Xiao Ju Gao; Lai Fei Cheng; Jian Wu Cao; Dong Ming Yan; Cong Zhang; Peng Man; Jun Feng Qu; Ya Wei Zhou; Su Jie Sun

Effect of carbon contents on microstructure of B₄C/SiC composites

Xiao Ju Gao, Lai Fei Cheng^*, Jian Wu Cao, Dong Ming Yan, Cong Zhang, Peng Man, Jun Feng Qu, Ya Wei Zhou, Su Jie Sun

^*Corresponding author for this work

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

4 Scopus citations

Abstract

B₄C/SiC composites were obtained by reaction sintering between C/B₄C green body and liquid Si, and the effect of carbon contents on microstructure was investigated by OM and SEM. Results show that B₄C/SiC composites consist of three new phases, namely, SiC, B₁₃C₂, and B₁₂(C, Si, B)₃. Compared with composites without carbon addition, microstructure becomes more even and smaller with increased carbon contents ranging from 0 vol.% to 10 vol.%, which may be due to the generation of a small amount of SiC and the increase in grain boundary. However, when the carbon contents exceeded 10 vol.%, residual carbon can forms defects, and abnormal grain growth is clearly observed. Meanwhile, increased carbon addition, more SiC is generated results in poor distribution uniformity of each phase.

Original language	English (US)
Pages (from-to)	482-487
Number of pages	6
Journal	Optoelectronics and Advanced Materials, Rapid Communications
Volume	9
Issue number	3-4
State	Published - 2015
Externally published	Yes

Keywords

Abnormal grain growth
Microstructure
Reaction sintering
SiC/B<inf>4</inf>C composite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Cite this

@article{84bdf8a990584bffbbd2555f9769e071,

title = "Effect of carbon contents on microstructure of B4C/SiC composites",

abstract = "B4C/SiC composites were obtained by reaction sintering between C/B4C green body and liquid Si, and the effect of carbon contents on microstructure was investigated by OM and SEM. Results show that B4C/SiC composites consist of three new phases, namely, SiC, B13C2, and B12(C, Si, B)3. Compared with composites without carbon addition, microstructure becomes more even and smaller with increased carbon contents ranging from 0 vol.% to 10 vol.%, which may be due to the generation of a small amount of SiC and the increase in grain boundary. However, when the carbon contents exceeded 10 vol.%, residual carbon can forms defects, and abnormal grain growth is clearly observed. Meanwhile, increased carbon addition, more SiC is generated results in poor distribution uniformity of each phase.",

keywords = "Abnormal grain growth, Microstructure, Reaction sintering, SiC/B<inf>4</inf>C composite",

author = "Gao, {Xiao Ju} and Cheng, {Lai Fei} and Cao, {Jian Wu} and Yan, {Dong Ming} and Cong Zhang and Peng Man and Qu, {Jun Feng} and Zhou, {Ya Wei} and Sun, {Su Jie}",

year = "2015",

language = "English (US)",

volume = "9",

pages = "482--487",

journal = "Optoelectronics and Advanced Materials, Rapid Communications",

issn = "1842-6573",

publisher = "National Institute of Optoelectronics",

number = "3-4",

}

TY - JOUR

T1 - Effect of carbon contents on microstructure of B4C/SiC composites

AU - Gao, Xiao Ju

AU - Cheng, Lai Fei

AU - Cao, Jian Wu

AU - Yan, Dong Ming

AU - Zhang, Cong

AU - Man, Peng

AU - Qu, Jun Feng

AU - Zhou, Ya Wei

AU - Sun, Su Jie

PY - 2015

Y1 - 2015

N2 - B4C/SiC composites were obtained by reaction sintering between C/B4C green body and liquid Si, and the effect of carbon contents on microstructure was investigated by OM and SEM. Results show that B4C/SiC composites consist of three new phases, namely, SiC, B13C2, and B12(C, Si, B)3. Compared with composites without carbon addition, microstructure becomes more even and smaller with increased carbon contents ranging from 0 vol.% to 10 vol.%, which may be due to the generation of a small amount of SiC and the increase in grain boundary. However, when the carbon contents exceeded 10 vol.%, residual carbon can forms defects, and abnormal grain growth is clearly observed. Meanwhile, increased carbon addition, more SiC is generated results in poor distribution uniformity of each phase.

AB - B4C/SiC composites were obtained by reaction sintering between C/B4C green body and liquid Si, and the effect of carbon contents on microstructure was investigated by OM and SEM. Results show that B4C/SiC composites consist of three new phases, namely, SiC, B13C2, and B12(C, Si, B)3. Compared with composites without carbon addition, microstructure becomes more even and smaller with increased carbon contents ranging from 0 vol.% to 10 vol.%, which may be due to the generation of a small amount of SiC and the increase in grain boundary. However, when the carbon contents exceeded 10 vol.%, residual carbon can forms defects, and abnormal grain growth is clearly observed. Meanwhile, increased carbon addition, more SiC is generated results in poor distribution uniformity of each phase.

KW - Abnormal grain growth

KW - Microstructure

KW - Reaction sintering

KW - SiC/B<inf>4</inf>C composite

UR - http://www.scopus.com/inward/record.url?scp=84935883429&partnerID=8YFLogxK

M3 - Article

SN - 1842-6573

VL - 9

SP - 482

EP - 487

JO - Optoelectronics and Advanced Materials, Rapid Communications

JF - Optoelectronics and Advanced Materials, Rapid Communications

IS - 3-4

ER -

Effect of carbon contents on microstructure of B₄C/SiC composites

Abstract

Keywords

ASJC Scopus subject areas

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