Microstructure and properties of C/C–SiC composites prepared by reactive melt infiltration at low temperature in vacuum

Lei Liu; Leilei Zhang; Wei Feng; Jianping Li; Yaping Bai; Dong Tao; Xiaoqin Su; Yi Cao; Tong Bao; Jiaqi Zheng

doi:10.1016/j.ceramint.2019.11.195

Microstructure and properties of C/C–SiC composites prepared by reactive melt infiltration at low temperature in vacuum

Lei Liu, Leilei Zhang, Wei Feng, Jianping Li, Yaping Bai, Dong Tao, Xiaoqin Su, Yi Cao, Tong Bao, Jiaqi Zheng

School of Materials Sience and Engineering

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

23 Scopus citations

Abstract

Dense C/C–SiC composites were prepared by reactive melt infiltration at 1100–1200 °C in vacuum through addition of 20–40 wt% Al into Si powder. XRD and EDS analysis showed that the composites were composed of carbon, SiC, Al and residual Si. The composite with 20% wt.% Al had the maximum compressive strength and modulus, while the composite with 30 wt% Al possessed the highest density and thermal expansion coefficient. The micro-cracks in composites were responsible for the compressive behavior, and caused decrease of thermal expansion of the composites from 30 to 40 wt% Al.

Original language	English
Pages (from-to)	8469-8472
Number of pages	4
Journal	Ceramics International
Volume	46
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2019.11.195
State	Published - 15 Apr 2020

Keywords

B. Composites
C. Mechanical properties
C. Thermal expansion
D. SiC

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10.1016/j.ceramint.2019.11.195

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title = "Microstructure and properties of C/C–SiC composites prepared by reactive melt infiltration at low temperature in vacuum",

abstract = "Dense C/C–SiC composites were prepared by reactive melt infiltration at 1100–1200 °C in vacuum through addition of 20–40 wt% Al into Si powder. XRD and EDS analysis showed that the composites were composed of carbon, SiC, Al and residual Si. The composite with 20% wt.% Al had the maximum compressive strength and modulus, while the composite with 30 wt% Al possessed the highest density and thermal expansion coefficient. The micro-cracks in composites were responsible for the compressive behavior, and caused decrease of thermal expansion of the composites from 30 to 40 wt% Al.",

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author = "Lei Liu and Leilei Zhang and Wei Feng and Jianping Li and Yaping Bai and Dong Tao and Xiaoqin Su and Yi Cao and Tong Bao and Jiaqi Zheng",

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T1 - Microstructure and properties of C/C–SiC composites prepared by reactive melt infiltration at low temperature in vacuum

AU - Liu, Lei

AU - Zhang, Leilei

AU - Feng, Wei

AU - Li, Jianping

AU - Bai, Yaping

AU - Tao, Dong

AU - Su, Xiaoqin

AU - Cao, Yi

AU - Bao, Tong

AU - Zheng, Jiaqi

PY - 2020/4/15

Y1 - 2020/4/15

N2 - Dense C/C–SiC composites were prepared by reactive melt infiltration at 1100–1200 °C in vacuum through addition of 20–40 wt% Al into Si powder. XRD and EDS analysis showed that the composites were composed of carbon, SiC, Al and residual Si. The composite with 20% wt.% Al had the maximum compressive strength and modulus, while the composite with 30 wt% Al possessed the highest density and thermal expansion coefficient. The micro-cracks in composites were responsible for the compressive behavior, and caused decrease of thermal expansion of the composites from 30 to 40 wt% Al.

AB - Dense C/C–SiC composites were prepared by reactive melt infiltration at 1100–1200 °C in vacuum through addition of 20–40 wt% Al into Si powder. XRD and EDS analysis showed that the composites were composed of carbon, SiC, Al and residual Si. The composite with 20% wt.% Al had the maximum compressive strength and modulus, while the composite with 30 wt% Al possessed the highest density and thermal expansion coefficient. The micro-cracks in composites were responsible for the compressive behavior, and caused decrease of thermal expansion of the composites from 30 to 40 wt% Al.

KW - B. Composites

KW - C. Mechanical properties

KW - C. Thermal expansion

KW - D. SiC

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U2 - 10.1016/j.ceramint.2019.11.195

DO - 10.1016/j.ceramint.2019.11.195

M3 - 文章

AN - SCOPUS:85075896260

SN - 0272-8842

VL - 46

SP - 8469

EP - 8472

JO - Ceramics International

JF - Ceramics International

IS - 6

ER -

Microstructure and properties of C/C–SiC composites prepared by reactive melt infiltration at low temperature in vacuum

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Keywords

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