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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.
DOI10.3390/ma15051717
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收录类别sci ; ei
语种英语
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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
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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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