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	Nanostructural and physical features of BaTiO/sub 3/ ceramics prepared by two-step sintering
	Moon, S.-M. ; Xiaohui Wang ; Cho, N..-H.
	2010-10-12 ; 2010-10-12
关键词	Experimental/ barium compounds density diffusion ferroelectric ceramics grain size nanostructured materials piezoceramics powder technology shrinkage sintering/ nanostructural ceramics two-step sintering nanograined ceramics shrinkage specific surface green bodies boundary diffusion lattice diffusion powders relative mass density grain size ferroelectricity local piezoelectricity size 20 nm temperature 1230 degC temperature 1160 degC time 10 h BaTiO/sub 3// A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials A6480G Microstructure A6630H Self-diffusion and ionic conduction in solid nonmetals A7760 Piezoelectricity and electrostriction A7780 Ferroelectricity and antiferroelectricity A8116 Methods of nanofabrication and processing A8120E Powder techniques, compaction and sintering A8120L Preparation of ceramics and refractories/ size 2.0E-08 m temperature 1.50315E+03 K temperature 1.43315E+03 K time 3.6E+04 s/ BaTiO3/ss TiO3/ss O3/ss Ba/ss Ti/ss O/ss
中文摘要	Nano-grained BaTiO/sub 3/ ceramics were prepared using a two-step sintering process. The level of shrinkage and specific surface of the BaTiO/sub 3/ green bodies were measured as a function of temperature. The two temperatures at which boundary diffusion and lattice diffusion begin to dominate were estimated by measuring the shrinkage behavior of the green bodies. These temperatures were used as the 1st- and 2nd-step temperature in this two-step sintering process. The BaTiO/sub 3/ ceramics prepared from 20 nm-sized powders using the two-step sintering process at T1=1230 degrees C and T2=1160 degrees C (10 h) showed a relative mass density of ~91% with very little variation in grain size compared with the starting powders. The ferroelectricity was determined from the local piezoelectric response behavior of the BaTiO/sub 3/ ceramics with a grain size of 30 nm. The ~30 nm-size-grained ceramics showed considerable ferroelectric behavior.
语种	英语
出版者	Nippon Seramikkusu Kyokai ; Japan
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78383]
专题	清华大学
推荐引用方式 GB/T 7714	Moon, S.-M.,Xiaohui Wang,Cho, N..-H.. Nanostructural and physical features of BaTiO/sub 3/ ceramics prepared by two-step sintering[J],2010, 2010.
APA	Moon, S.-M.,Xiaohui Wang,&Cho, N..-H..(2010).Nanostructural and physical features of BaTiO/sub 3/ ceramics prepared by two-step sintering..
MLA	Moon, S.-M.,et al."Nanostructural and physical features of BaTiO/sub 3/ ceramics prepared by two-step sintering".(2010).

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