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	Sintering and electrical and mechanical properties of lead zirconate titanate/silver piezoelectric composites
	Zhang Hailong ; Li Jingfeng ; Zhang Boping
	2010-05-10 ; 2010-05-10
关键词	Experimental/ coercive force composite materials electrical conductivity fracture toughness lead compounds oxidation permittivity piezoceramics piezoelectricity powders silver sintering zirconium compounds/ sintering electrical properties mechanical properties lead zirconate titanate-silver piezoelectric composites PZT ceramics powder processing oxidation chemical reactions dielectric constant remanent polarization coercive field piezoelectric constant fracture toughness microstructures 900 C 1200 C PZT-Ag PbZrO3TiO3-Ag/ A8120N Preparation of cermets, ceramic and refractory composites A8120E Powder techniques, compaction and sintering A7760 Piezoelectricity and electrostriction A7720 Dielectric permittivity A7280T Electrical conductivity of composite materials A8140N Fatigue, embrittlement, and fracture A6220M Fatigue, brittleness, fracture, and cracks A6480G Microstructure/ temperature 1.17E+03 K temperature 1.47E+03 K/ PbZrO3TiO3Ag/ss TiO3/ss ZrO3/ss Ag/ss O3/ss Pb/ss Ti/ss Zr/ss O/ss
中文摘要	Lead zirconate titanate/silver (PZT/Ag) composites were fabricated via conventional powder processing using PZT and Ag powders as the starting materials at 900 degrees C and 1200 degrees C, respectively. The results show that pure Ag particles were homogeneously dispersed in the PZT matrix. Neither oxidation of Ag nor chemical reactions between PZT and Ag were observed. Although the sintering of PZT was promoted at 900 degrees C by the addition of a small amount of Ag, the resultant PZT ceramics were still fairly porous. The electrical and mechanical properties of the PZT/Ag composites sintered at 900 degrees C and 1200 degrees C were compared in the range of 0-15% Ag in volume fraction. In comparison, the PZT/Ag composites sintered at 900 degrees C had a larger increasing rate of dielectric constant epsiv /sub r/, with increasing Ag concentration, than those sintered at 1200 degrees C; however, the former had much less remanent polarization P/sub r/, coercive field E/sub c/, piezoelectric constant d/sub 33/, and fracture toughness K/sub c/ values than the latter. These differences in electrical and mechanical properties can be explained on the basis of the corresponding microstructures of the two composites. This study suggests that 1200 degrees C is more suitable than 900 degrees C for the sintering of PZT/Ag composites.
语种	中文 ; 中文
出版者	Chinese Ceramic Soc ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21187]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang Hailong,Li Jingfeng,Zhang Boping. Sintering and electrical and mechanical properties of lead zirconate titanate/silver piezoelectric composites[J],2010, 2010.
APA	Zhang Hailong,Li Jingfeng,&Zhang Boping.(2010).Sintering and electrical and mechanical properties of lead zirconate titanate/silver piezoelectric composites..
MLA	Zhang Hailong,et al."Sintering and electrical and mechanical properties of lead zirconate titanate/silver piezoelectric composites".(2010).

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