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Microstructures of a SiC-ZrC Ceramic Fiber Derived from a Polymeric Precursor
Ge, Min1; Lv, Xiaoxu2; Zhang, Hao1,3; Yu, Shouquan1; Lu, Zhenxi1; Zhang, Weigang1,3
2020-05-01
Source PublicationMATERIALS
Volume13Issue:9Pages:10
AbstractContinuous ceramic fiber comprising silicon carbide-zirconium carbide (SiC-ZrC) binary phases was obtained through melt spinning, electron-beam curing and pyrolysis of a pre-ceramic precursor of polyzirconocenecarbosilanes (PZCS). After pyrolysis and heat treatment, ZrC particles with mean diameters of 15-20 nm were formed and homogeneously dispersed in a matrix of fine crystalline beta-SiC with an average grain size of 6-10 nm. Concentration of Zr in the fiber varies from 14.88% to 17.45% by mass. Fibers consisting of near-stoichiometric ZrC and SiC with little free carbon can be obtained through pyrolysis decarbonization of the as-cured fiber in hydrogen from room temperature to 1000 degrees C, and subsequently heat treatment in argon up to 1600 degrees C for 1 h. High-temperature treatment of these amorphous inorganic fibers leads to crystallization of the binary phases of beta-SiC and ZrC. The removal of free carbon under hydrogen results in more rapid growth of beta-SiC and ZrC crystals, in which obvious aggregation of the dispersed ZrC particles among the continuous beta-SiC matrix can be ascribed to a fast migration of Zr cation.
Keywordceramic fiber silicon carbide zirconium carbide
DOI10.3390/ma13092142
Language英语
WOS KeywordSILICON-CARBIDE FIBER ; POLYCARBOSILANE ; COMPOSITES
Funding ProjectNational Key R&D Program of China[2018YFC1902401] ; National Natural Science Foundation of China[51471159] ; National Natural Science Foundation of China[51671180] ; National Natural Science Foundation of China[51472243] ; National Natural Science Foundation of China[51272251]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000535941100136
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40814
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Weigang
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Aero Engine Corp China, Beijing Inst Aeronaut Mat, Natl Key Lab Adv Composites, Beijing 100095, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ge, Min,Lv, Xiaoxu,Zhang, Hao,et al. Microstructures of a SiC-ZrC Ceramic Fiber Derived from a Polymeric Precursor[J]. MATERIALS,2020,13(9):10.
APA Ge, Min,Lv, Xiaoxu,Zhang, Hao,Yu, Shouquan,Lu, Zhenxi,&Zhang, Weigang.(2020).Microstructures of a SiC-ZrC Ceramic Fiber Derived from a Polymeric Precursor.MATERIALS,13(9),10.
MLA Ge, Min,et al."Microstructures of a SiC-ZrC Ceramic Fiber Derived from a Polymeric Precursor".MATERIALS 13.9(2020):10.
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