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Microstructure and ablation mechanism of C/C-SiC composites
Alternative TitleJ. Eur. Ceram. Soc.
Cui, Yuanyuan1; Li, Aijun1; Li, Bo1; Ma, Xiao1; Bai, Ruicheng1; Zhang, Weigang2; Ren, Musu1; Sun, Jinliang1
2014-02-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume34Issue:2Pages:171-177
AbstractC/C-SiC composites were prepared by molten infiltration of silicon powders, using porous C/C composites as frameworks. The porosities of the C/C-SiC composites were about 0.89-2.8 vol%, which is denser than traditional C/C composites. The ablation properties were tested using an oxyacetylene torch. Three annular regions were present on the ablation surface. With increasing pyrocarbon fraction, a white ceramic oxide layer formed from the boundary to the center of the surface. The ablation experimental results also showed that the linear and mass ablation rates of the composites decreased with increasing carbon fraction. Linear SiO2 whiskers of diameter 800 am and length approximately 3 mu m were formed near the boundaries of the ablation surfaces of the C/C-SiC composites produced with low-porosity C/C frameworks. The ablation mechanism of the C/C-SiC composites is discussed, based on a heterogeneous ablation reaction model and a supersaturation assumption. (C) 2013 Elsevier Ltd. All rights reserved.; C/C-SiC composites were prepared by molten infiltration of silicon powders, using porous C/C composites as frameworks. The porosities of the C/C-SiC composites were about 0.89-2.8 vol%, which is denser than traditional C/C composites. The ablation properties were tested using an oxyacetylene torch. Three annular regions were present on the ablation surface. With increasing pyrocarbon fraction, a white ceramic oxide layer formed from the boundary to the center of the surface. The ablation experimental results also showed that the linear and mass ablation rates of the composites decreased with increasing carbon fraction. Linear SiO2 whiskers of diameter 800 am and length approximately 3 mu m were formed near the boundaries of the ablation surfaces of the C/C-SiC composites produced with low-porosity C/C frameworks. The ablation mechanism of the C/C-SiC composites is discussed, based on a heterogeneous ablation reaction model and a supersaturation assumption. (C) 2013 Elsevier Ltd. All rights reserved.
KeywordCeramic Matrix Composites Microstructure Ablation Mechanism
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.jeurceramsoc.2013.08.026
URL查看原文
Indexed BySCI
Language英语
WOS KeywordCARBON/CARBON COMPOSITES ; C/SIC COMPOSITES ; SILICON-CARBIDE ; MORPHOLOGY ; OXIDATION ; NANOCABLES ; BEHAVIORS ; GROWTH ; FILMS ; TORCH
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000327567800002
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8140
Collection研究所(批量导入)
Affiliation1.Shanghai Univ, Res Ctr Composite Mat, Shanghai 200072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Cui, Yuanyuan,Li, Aijun,Li, Bo,et al. Microstructure and ablation mechanism of C/C-SiC composites[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2014,34(2):171-177.
APA Cui, Yuanyuan.,Li, Aijun.,Li, Bo.,Ma, Xiao.,Bai, Ruicheng.,...&Sun, Jinliang.(2014).Microstructure and ablation mechanism of C/C-SiC composites.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,34(2),171-177.
MLA Cui, Yuanyuan,et al."Microstructure and ablation mechanism of C/C-SiC composites".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 34.2(2014):171-177.
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