Microstructure Evolution and Performance Improvement of Silicon Carbide Ceramics via Impregnation Method

doi:10.3390/ma15051717

CIOMP OpenIR

	Microstructure Evolution and Performance Improvement of Silicon Carbide Ceramics via Impregnation Method
	W. Li; C. H. Guo; C. C. Cui; J. X. Bao; G. Zhang; Y. B. Zhang; S. Li and G. Wang
	2022
发表期刊	Materials
卷号	15 期号:5 页码:19
摘要	The high topological silicon carbide (SiC) ceramics can be prepared by stereolithography (SLA) combined with liquid silicon infiltration (LSI) techniques. This paper aims to enhance the performance of SiC ceramics prepared by SLA and LSI techniques via the cyclic impregnation/carbonization of the precursor of carbon source solution before LSI. The effects of impregnation/carbonization cycles on the microstructure and properties of C/SiC preform and sintered body were analyzed in detail. The results show that, with the increase of impregnation/carbonization cycles, the porosity in the C/SiC preform decreases obviously and the content of secondary SiC in the sintered body increases effectively. Especially, when the impregnation/carbonization cycle was performed twice, the sintered body had the optimal mechanical properties. The value of flexural strength, bulk density and elastic modulus were 258.63 +/- 8.33 MPa, 2.95 +/- 0.02 g/cm(3) and 425.16 +/- 14.15 GPa, respectively. In addition, the thermal dimensional stability of sintered body was also improved by this method. This method proves that SiC ceramics prepared by SLA combined with LSI have the potential of applications in space optical mirrors.
DOI	10.3390/ma15051717
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收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66842
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,C. H. Guo,C. C. Cui,et al. Microstructure Evolution and Performance Improvement of Silicon Carbide Ceramics via Impregnation Method[J]. Materials,2022,15(5):19.
APA	W. Li.,C. H. Guo.,C. C. Cui.,J. X. Bao.,G. Zhang.,...&S. Li and G. Wang.(2022).Microstructure Evolution and Performance Improvement of Silicon Carbide Ceramics via Impregnation Method.Materials,15(5),19.
MLA	W. Li,et al."Microstructure Evolution and Performance Improvement of Silicon Carbide Ceramics via Impregnation Method".Materials 15.5(2022):19.

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