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Microstructure evolution and high-temperature mechanical properties of SiCf/SiC composites in liquid fluoride salt environment
Wang, Hongda1,2,3; Feng, Qian4; Wang, Zhen1,2; Zhou, Haijun1,2; Kan, Yanmei1,2; Hu, Jianbao1,2; Dong, Shaoming1,2
2017
Source PublicationCorrosion Science
ISSN0010938X
Volume124Pages:131-137
AbstractHigh temperature mechanical properties and microstructure evolution of chemical-vapor-infiltrated SiC fiber reinforced SiC ceramic matrix composites (SiCf/SiC) in 46.5LiF-11.5NaF-42.0KF (mol.%, FLiNaK) eutectic salt were investigated. The results indicate that the corrosion of SiCf/SiC composites was accelerated with increase of corrosion temperature. Interlayer boundaries in SiC matrix with higher oxygen content were corroded preferentially. The F−formed Si–F coordinate bond with SiC and replaced carbon, followed by the corrosion of SiC matrix. While single SiC fiber tensile strength suffered no depravation after corrosion, corrosion and damage of SiC matrix led to deteriorated high temperature mechanical properties of SiCf/SiC composites. © 2017 Elsevier Ltd
DOI10.1016/j.corsci.2017.05.016
EI Accession Number20172403755314
EI KeywordsFluorine compounds
EI Classification Number804.2 Inorganic Compounds - 812.1 Ceramics - 951 Materials Science
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25587
Collection中国科学院上海硅酸盐研究所
Affiliation1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
3.University of Chinese Academy of Sciences, Beijing; 100049, China;
4.Analysis and Testing Center, Donghua University, Shanghai; 201600, China
Recommended Citation
GB/T 7714
Wang, Hongda,Feng, Qian,Wang, Zhen,et al. Microstructure evolution and high-temperature mechanical properties of SiCf/SiC composites in liquid fluoride salt environment[J]. Corrosion Science,2017,124:131-137.
APA Wang, Hongda.,Feng, Qian.,Wang, Zhen.,Zhou, Haijun.,Kan, Yanmei.,...&Dong, Shaoming.(2017).Microstructure evolution and high-temperature mechanical properties of SiCf/SiC composites in liquid fluoride salt environment.Corrosion Science,124,131-137.
MLA Wang, Hongda,et al."Microstructure evolution and high-temperature mechanical properties of SiCf/SiC composites in liquid fluoride salt environment".Corrosion Science 124(2017):131-137.
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