Microstructures of a SiC-ZrC Ceramic Fiber Derived from a Polymeric Precursor

doi:10.3390/ma13092142

	Microstructures of a SiC-ZrC Ceramic Fiber Derived from a Polymeric Precursor
	Ge, Min 1; Lv, Xiaoxu 3; Zhang, Hao 1,2; Yu, Shouquan 1; Lu, Zhenxi 1; Zhang, Weigang 1,2
刊名	MATERIALS
	2020-05-01
卷号	13 期号:9 页码:10
关键词	ceramic fiber silicon carbide zirconium carbide
DOI	10.3390/ma13092142
英文摘要	Continuous 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.
资助项目	National 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关键词	SILICON-CARBIDE FIBER ; POLYCARBOSILANE ; COMPOSITES
WOS研究方向	Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000535941100136
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/40813]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Weigang
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Aero Engine Corp China, Beijing Inst Aeronaut Mat, Natl Key Lab Adv Composites, Beijing 100095, Peoples R China
推荐引用方式 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.