Mechanism analysis of oxidation time on performance improvement of additive manufacturing silicon carbide

doi:10.37188/OPE.20233123.3449

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	Mechanism analysis of oxidation time on performance improvement of additive manufacturing silicon carbide
	W. Li; G. Zhang; C. Cui; J. Bao; C. Guo; C. Xu; W. Zhang and W. Zhu
	2023
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	31 期号:23 页码:3449-3456
摘要	Additive manufacturing combined with reactive sintering can be used to fabricate extremely lightweight silicon carbide ceramic mirrors. However，the mechanical properties of silicon carbide pre⁃ pared by this method，such as flexural strength and elastic modulus，are low and insufficient. A novel method was proposed to improve the properties of silicon carbide by high temperature oxidation. First，sili⁃ con carbide prepared by additive manufacturing and reactive sintering was oxidized at 850 ℃. Thereafter，the effect of oxidation time on material composition and surface defect content was studied. The enhance⁃ ment mechanism of oxidation time on the properties of silicon carbide was elucidated. The results demon⁃ strate that when the oxidation time is 2 h，a dense silica film is in-situ grown on the surface of the material，which can render the surface defects of the material to self-heal and effectively reduce their contents. In ad⁃ dition，the final body obtained the best comprehensive properties by this method，and the flexural strength and elastic modulus are 263. 9 MPa and 384. 75 GPa，with increments of 10. 7% and 14. 4%，respective⁃ ly. This method has the advantages of high efficiency，low cost，and easy operation. The study provides theoretical guidance for improving the performance of additive manufacturing silicon carbide ceramics. © 2023 Chinese Academy of Sciences. All rights reserved.
DOI	10.37188/OPE.20233123.3449
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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/181722/67645
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. Mechanism analysis of oxidation time on performance improvement of additive manufacturing silicon carbide[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2023,31(23):3449-3456.
APA	W. Li.,G. Zhang.,C. Cui.,J. Bao.,C. Guo.,...&W. Zhang and W. Zhu.(2023).Mechanism analysis of oxidation time on performance improvement of additive manufacturing silicon carbide.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,31(23),3449-3456.
MLA	W. Li,et al."Mechanism analysis of oxidation time on performance improvement of additive manufacturing silicon carbide".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 31.23(2023):3449-3456.

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