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	Making nanostructured ceramics from micrometer-sized powders via grain refinement during SPS sintering
	Kepi Chen ; Xiaowen Zhang ; Hui Wang ; Ligong Zhang ; Jing Zhu ; Fuqian Yang ; Linan An
	2010-10-12 ; 2010-10-12
关键词	Experimental/ ceramics densification fatigue grain refinement grain size lead compounds nanostructured materials nanotechnology plasma materials processing sintering thermomechanical treatment/ nanostructured ceramic synthesis micrometer-sized powders grain refinement electrical field-activated sintering process grain size structural analysis electric field-induced thermo-mechanical fatigue process spark plasma sintering process SPS sintering densification size 1 mum to 10 mum Pb(Mg/sub 0.33/Nb/sub 0.66/)O/sub 3/-PbTiO/sub 3// A8120L Preparation of ceramics and refractories A6480G Microstructure A8140G Other heat and thermomechanical treatments A6220M Fatigue, brittleness, fracture, and cracks A8140N Fatigue, embrittlement, and fracture A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials A8116 Methods of nanofabrication and processing A5275R Plasma applications in manufacturing and materials processing A8120E Powder techniques, compaction and sintering/ size 1.0E-06 to 1.0E-05 m/ PbMg0.33Nb0.66O3PbTiO3/ss Mg0.33/ss Nb0.66/ss TiO3/ss O3/ss Mg/ss Nb/ss Pb/ss Ti/ss O/ss
中文摘要	In this paper, we have demonstrated that dense bulk nanostructured ceramics can be synthesized from micrometer-sized powders by using an electrical field-activated sintering process. A dense Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-PbTiO/sub 3/ ceramic with grain sizes of 20-100 nm was obtained from the starting powder of 1 to 10 mu m. Structural and property analysis confirmed that the entire specimen is composed of nano-sized grains. The significant micro- structural refining is attributed to a pulsed electric field-induced thermo-mechanical fatigue process, which in situ "shattered" the large particles into nano-sized grains during sintering. An advantage of this technique over the previous ones is that it avoids the usage of ultrafine nanometer-sized powders, which are difficult to process and mass produce in an economic and consistent way. In principle, the process demonstrated here can be applied to other material systems.
语种	英语
出版者	American Ceramic Society ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78505]
专题	清华大学
推荐引用方式 GB/T 7714	Kepi Chen,Xiaowen Zhang,Hui Wang,et al. Making nanostructured ceramics from micrometer-sized powders via grain refinement during SPS sintering[J],2010, 2010.
APA	Kepi Chen.,Xiaowen Zhang.,Hui Wang.,Ligong Zhang.,Jing Zhu.,...&Linan An.(2010).Making nanostructured ceramics from micrometer-sized powders via grain refinement during SPS sintering..
MLA	Kepi Chen,et al."Making nanostructured ceramics from micrometer-sized powders via grain refinement during SPS sintering".(2010).

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