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	Preparation and characterization of core-shell structured alpha-fe2o3/sic spheres
	Wu, Xiangyang; Jin, Guoqiang; Guan, Lianxiu; Cao, Hu; Guo, Xiang-Yun
刊名	Materials science and engineering a-structural materials properties microstructure and processing
	2006-10-15
卷号	433期号:1-2页码:190-194
关键词	Silicon carbide Iron oxide Core-shell structure Magnetic properties
ISSN号	0921-5093
DOI	10.1016/j.msea.2006.07.013
通讯作者	Guo, xiang-yun(xyguo@sxicc.ac.cn)
英文摘要	Fe2o3/sic composite microspheres with a core-shell structure were prepared by the carbothermal reduction reaction between poly(styrene sulfonic acid) iron salt and silica. x-ray diffraction, scanning electron microscope and magnetic properties measurement system were employed to characterize the morphology, structure and magnetic properties of the microspheres. from the results, the microspheres with a diameter of 150-400 mu m have an alpha-fe2o3 core and a sic shell of tens of microns in thickness. the magnetism of the core-shell structured spheres at 10(4) oe is much larger than that of pure alpha-fe2o3 spheres prepared under the same conditions and the increment in magnetism is attributed to the introduction of iron silicides and sic. by further chemical treatment, the alpha-fe2o3/sic microspheres can change into sic hollow spheres, which have diameters similar to the magnetic spheres and mainly consist of irregular sic particles. the formation mechanism of the composite and hollow spheres was also discussed. (c) 2006 elsevier b.v. all rights reserved.
WOS关键词	REACTIVE REPLICA TECHNIQUE ; TUBULAR SILICON-CARBIDE ; ION-EXCHANGE-RESIN ; MESOPOROUS SILICA ; CARBON ; PARTICLES ; NANOWIRES ; NANOPARTICLES ; TEMPLATES ; NANOTUBES
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000240821400029
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2379842
专题	中国科学院大学
通讯作者	Guo, Xiang-Yun
作者单位	1.CAS, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Xiangyang,Jin, Guoqiang,Guan, Lianxiu,et al. Preparation and characterization of core-shell structured alpha-fe2o3/sic spheres[J]. Materials science and engineering a-structural materials properties microstructure and processing,2006,433(1-2):190-194.
APA	Wu, Xiangyang,Jin, Guoqiang,Guan, Lianxiu,Cao, Hu,&Guo, Xiang-Yun.(2006).Preparation and characterization of core-shell structured alpha-fe2o3/sic spheres.Materials science and engineering a-structural materials properties microstructure and processing,433(1-2),190-194.
MLA	Wu, Xiangyang,et al."Preparation and characterization of core-shell structured alpha-fe2o3/sic spheres".Materials science and engineering a-structural materials properties microstructure and processing 433.1-2(2006):190-194.

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