Preparation, microstructure and magnetic properties of Fe-containing SiC ceramic nanocomposites derived from Fe(CO)(5)-modified AHPCS

CORC > 厦门大学 > 材料学院－已发表论文

	Preparation, microstructure and magnetic properties of Fe-containing SiC ceramic nanocomposites derived from Fe(CO)(5)-modified AHPCS
	Yu, Zhaoju ; Zhan, Junying ; Zhang, Zehui ; Yang, Le ; Yu ZJ(余兆菊)
刊名	http://dx.doi.org/10.1016/j.ceramint.2013.02.031
	2013
关键词	SILICON-CARBIDE LIQUID POLYCARBOSILANE DIELECTRIC-PROPERTIES PYROLYTIC CONVERSION COMPOSITES POLYMERS FIBERS PRECURSORS YIELD
英文摘要	Natural Science Foundation of China (NSFC) [50802079]; Natural Science Foundation of Fujian Province of China [2011J01330]; Fe-containing SiC ceramic nanocomposites were prepared by pyrolysis of iron pentacarbonyl (Fe(CO)(5))-modified allylhydridopolycarbosilane (AHPCS-Fe(CO)(5)). The cross-linking mechanism and ceramization of the AHPCS-Fe(CO)(5) precursors were studied by nuclear magnetic resonance, Fourier transform infrared spectroscopy and thermal gravimetric analysis. It is suggested that hydrosilylation, dehydrocoupling and the reaction of Si H bonds with C=O groups evolved by Fe(CO)(5) decomposition are involved in the cross-linking of the AHPCS-Fe(CO)(5) precursor. The crystallization behavior, microstructure and magnetic properties of the obtained Fe-containing SiC ceramic nanocomposites were investigated by techniques such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy and vibrating sample magnetometry. The results indicate that the alpha-Fe crystallites together with beta-SiC crystallites and poorly organized turbostratic carbon are dispersed in an amorphous SiCxOy matrix, which might be responsible for the soft magnetization of the obtained ceramic composites. The iron content arid the magnetic properties of the final ceramic could be easily tuned by the amount of Fe(CO)(5) in the precursor. Crown Copyright (C) 2013 Published by Elsevier Ltd and Techna Group S.r.l. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87266]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Yu, Zhaoju,Zhan, Junying,Zhang, Zehui,et al. Preparation, microstructure and magnetic properties of Fe-containing SiC ceramic nanocomposites derived from Fe(CO)(5)-modified AHPCS[J]. http://dx.doi.org/10.1016/j.ceramint.2013.02.031,2013.
APA	Yu, Zhaoju,Zhan, Junying,Zhang, Zehui,Yang, Le,&余兆菊.(2013).Preparation, microstructure and magnetic properties of Fe-containing SiC ceramic nanocomposites derived from Fe(CO)(5)-modified AHPCS.http://dx.doi.org/10.1016/j.ceramint.2013.02.031.
MLA	Yu, Zhaoju,et al."Preparation, microstructure and magnetic properties of Fe-containing SiC ceramic nanocomposites derived from Fe(CO)(5)-modified AHPCS".http://dx.doi.org/10.1016/j.ceramint.2013.02.031 (2013).