Structure Evolution and Properties Modification for Reaction-Bonded Silicon Carbide

doi:10.3390/ma15248721

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	Structure Evolution and Properties Modification for Reaction-Bonded Silicon Carbide
	W. Li; G. Zhang; C. Cui; J. Bao; C. Guo; C. Xu; W. Zhang and W. Zhu
	2022
发表期刊	Materials
ISSN	19961944
卷号	15 期号:24
摘要	Complex structure reaction-bonded silicon carbide (RB-SiC) can be prepared by reactive melt infiltration (RMI) and digital light processing (DLP). However, the strength and modulus of RB-SiC prepared by DLP are not sufficient, due to its low solid content (around 40 vol.%), compared with the traditional fabrication techniques (solid content 60 vol.%). With this understanding, a new method to improve the properties of RB-SiC was proposed, by the impregnation of composite precursor into the porous preform. The composite precursor was composed of phenolic (PF) resin and furfuryl alcohol (FA). PF and FA were pyrolyzed at 1850 C to obtain amorphous carbon and graphite into the porous preform, respectively. The effects of multiphase carbon on the microstructure and performance of RB-SiC was studied. When the mass ratio of PF to FA was 1/4, the solid content of RB-SiC increased from 40 vol.% to 68.6 vol.%. The strength, bulk density and modulus were 323.12 MPa, 2.94 g/cm3 and 348.83 Gpa, respectively. This method demonstrated that the reaction process between liquid Si and carbon could be controlled by the introduction of multiphase carbon into the porous preforms, which has the potential to regulate the microstructure and properties of RB-SiC prepared by additive manufacturing or other forming methods. 2022 by the authors.
DOI	10.3390/ma15248721
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67117
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	W. Li,G. Zhang,C. Cui,et al. Structure Evolution and Properties Modification for Reaction-Bonded Silicon Carbide[J]. Materials,2022,15(24).
APA	W. Li.,G. Zhang.,C. Cui.,J. Bao.,C. Guo.,...&W. Zhang and W. Zhu.(2022).Structure Evolution and Properties Modification for Reaction-Bonded Silicon Carbide.Materials,15(24).
MLA	W. Li,et al."Structure Evolution and Properties Modification for Reaction-Bonded Silicon Carbide".Materials 15.24(2022).

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