Processing and characterization of cobalt silicide nanoparticle-containing silicon carbide fibers through a colloidal method and their underlying mechanism

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	Processing and characterization of cobalt silicide nanoparticle-containing silicon carbide fibers through a colloidal method and their underlying mechanism
	Liu Anhua ; Chen Jianming ; Ding Shaonan ; Yao Yanbo ; Liu Ling ; Li Fengping ; Chen Lifu ; Liu AH(刘安华) ; Chen LF(陈立富)
刊名	http://dx.doi.org/10.1039/c4tc00315b
	2014
关键词	MICROWAVE-ABSORPTION PROPERTIES POLYMER-DERIVED CERAMICS HIGH-TENSILE STRENGTH POLYCARBOSILANE FIBER HEAT-TREATMENT SIC FIBER IRON DISPERSIONS PYROLYSIS OXIDATION
英文摘要	National Natural Science Foundation of China [51002127, 51072169]; Cobalt-containing silicon carbide (Co-SiC) fibers were synthesized through a colloidal method. Dicobalt octacarbonyl [Co-2(CO)(8)] was employed to react with low-molecular weight liquid polycarbosilane (LPCS) to prepare a stable Co-containing colloid (Co-colloid), which was subsequently added to high-molecular weight solid polycarbosilane to obtain the precursor. FTIR, GPC, XRD, and TEM were employed to further understand and develop the mechanism for the formation of the Co-colloid. Results show that active Co intermediates derived from the incomplete decomposition of Co-2(CO)(8) promoted LPCS cross-linkage. The effects of the Co-colloid on the oxidation-curing nature of the green fiber were also investigated. Under heat treatment at higher temperature, carbonyls in the fibers completely decomposed and further crystallized in the morphology of cobalt silicide (CoSi) domains. The effects of Co on the electrical resistivity, magnetic properties, dielectric properties, microwave absorption properties and tensile strength of SiC fibers were also studied.
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87370]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Liu Anhua,Chen Jianming,Ding Shaonan,et al. Processing and characterization of cobalt silicide nanoparticle-containing silicon carbide fibers through a colloidal method and their underlying mechanism[J]. http://dx.doi.org/10.1039/c4tc00315b,2014.
APA	Liu Anhua.,Chen Jianming.,Ding Shaonan.,Yao Yanbo.,Liu Ling.,...&陈立富.(2014).Processing and characterization of cobalt silicide nanoparticle-containing silicon carbide fibers through a colloidal method and their underlying mechanism.http://dx.doi.org/10.1039/c4tc00315b.
MLA	Liu Anhua,et al."Processing and characterization of cobalt silicide nanoparticle-containing silicon carbide fibers through a colloidal method and their underlying mechanism".http://dx.doi.org/10.1039/c4tc00315b (2014).