QQ客服 官方微博 反馈留言

	Preparation and characterization of citrate sol-gel derived CaLa/sub 4/Ti/sub 4/O/sub 15/ microwave dielectric ceramics
	Jing Pei ; Wei Zhenxing Yue ; Fei Zhao ; Wei Li ; Zhilun Gui ; Longtu Li
	2010-05-10 ; 2010-05-10
关键词	Experimental/ calcination calcium compounds ceramics crystal microstructure crystal structure dielectric materials dielectric resonance lanthanum compounds nanoparticles permittivity scanning electron microscopy sintering sol-gel processing transmission electron microscopy X-ray diffraction/ citrate sol-gel derived ceramics microwave dielectric ceramics hexagonal perovskite powders calcination sintering crystal structures crystal microstructures XRD TEM SEM temperature coefficient resonant frequency nanosized powders temperature 1150 degC temperature 1600 degC CaLa/sub 4/Ti/sub 4/O/sub 15// A8120L Preparation of ceramics and refractories A8120E Powder techniques, compaction and sintering A7720 Dielectric permittivity A7785 Electrical resonances A6480G Microstructure A6160 Crystal structure of specific inorganic compounds A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials/ temperature 1.42315E+03 K temperature 1.87315E+03 K/ CaLa4Ti4O15/ss O15/ss La4/ss Ti4/ss Ca/ss La/ss Ti/ss O/ss
中文摘要	In this work hexagonal perovskite powders of CaLa/sub 4/Ti/sub 4/O/sub 15/ were prepared by citrate sol-gel method. The calcined temperature was 1150 degrees C, which is lower than that of the conventional solid method. Dense CLT ceramics were produced at sintering temperature of 1600 degrees C. The crystal structures and microstructures were investigated by XRD, TEM and SEM, respectively. Compared with samples produced by solid method, the sol-gel derived CLT ceramics exhibited a near zero temperature coefficient of resonant frequency ( tau /sub f/) of-6 ppm/ degrees C, and other microwave properties , epsiv /sub r/~ 43, Qxf ~ 42000 GHz were also obtained. Moreover, the sintering temperature of the CLT ceramics could be reduced to 1400 degrees C by addition of B/sub 2/O/sub 3/-ZnO.
语种	英语 ; 英语
出版者	Trans Tech Publications Ltd. ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/20514]
专题	清华大学
推荐引用方式 GB/T 7714	Jing Pei,Wei Zhenxing Yue,Fei Zhao,et al. Preparation and characterization of citrate sol-gel derived CaLa/sub 4/Ti/sub 4/O/sub 15/ microwave dielectric ceramics[J],2010, 2010.
APA	Jing Pei,Wei Zhenxing Yue,Fei Zhao,Wei Li,Zhilun Gui,&Longtu Li.(2010).Preparation and characterization of citrate sol-gel derived CaLa/sub 4/Ti/sub 4/O/sub 15/ microwave dielectric ceramics..
MLA	Jing Pei,et al."Preparation and characterization of citrate sol-gel derived CaLa/sub 4/Ti/sub 4/O/sub 15/ microwave dielectric ceramics".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。