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	Effects of Ta Content and Sintering Temperature on Phase Composition,Microstructure and Electrical Properties of(Li,K,Na)(Nb_(1-x)Ta_x)O_3 Lead-free Piezoelectric Ceramics
	ZHEN Yuhua ; LI Jingfeng ; ZHEN Yuhua ; LI Jingfeng
	2016-03-30 ; 2016-03-30
关键词	lead-free piezoelectric,crystal structure,microstructure electric properties TQ174.1
其他题名	Effects of Ta Content and Sintering Temperature on Phase Composition,Microstructure and Electrical Properties of(Li,K,Na)(Nb_(1-x)Ta_x)O_3 Lead-free Piezoelectric Ceramics
中文摘要	(Li,K,Na)(Nb_(1-x)Ta_x)O_3(x=0,0.10,0.15,0.2) lead-free piezoelectric ceramics were fabricated via solid-state sintering.The effects of Ta content and sintering temperature on the microstructure,phase structure and electrical properties were investigated.The results show that Ta doping can induce the phase transition from orthorhombic to tetragonal symmetry in the Ta content range from 0.10 to 0.15.Also,Ta can efficiently suppress the grain growth until Ta content increases up to 0.15,and a relatively high sintering temperature can cause an abnormal grain growth at Ta content of<0.20.Also,the results indicate that a bimodal grain size distribution with dense microstructure can lead to a higher dielectric constant.Moreover,a relatively high piezoelectric coefficient d_(33) of 206 pC/N is obtained at Ta content of 0.15,which is probably due to the polymorphic phase transition.; (Li,K,Na)(Nb_(1-x)Ta_x)O_3(x=0,0.10,0.15,0.2) lead-free piezoelectric ceramics were fabricated via solid-state sintering.The effects of Ta content and sintering temperature on the microstructure,phase structure and electrical properties were investigated.The results show that Ta doping can induce the phase transition from orthorhombic to tetragonal symmetry in the Ta content range from 0.10 to 0.15.Also,Ta can efficiently suppress the grain growth until Ta content increases up to 0.15,and a relatively high sintering temperature can cause an abnormal grain growth at Ta content of<0.20.Also,the results indicate that a bimodal grain size distribution with dense microstructure can lead to a higher dielectric constant.Moreover,a relatively high piezoelectric coefficient d_(33) of 206 pC/N is obtained at Ta content of 0.15,which is probably due to the polymorphic phase transition.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/141753]
专题	清华大学
推荐引用方式 GB/T 7714	ZHEN Yuhua,LI Jingfeng,ZHEN Yuhua,et al. Effects of Ta Content and Sintering Temperature on Phase Composition,Microstructure and Electrical Properties of(Li,K,Na)(Nb_(1-x)Ta_x)O_3 Lead-free Piezoelectric Ceramics[J],2016, 2016.
APA	ZHEN Yuhua,LI Jingfeng,ZHEN Yuhua,&LI Jingfeng.(2016).Effects of Ta Content and Sintering Temperature on Phase Composition,Microstructure and Electrical Properties of(Li,K,Na)(Nb_(1-x)Ta_x)O_3 Lead-free Piezoelectric Ceramics..
MLA	ZHEN Yuhua,et al."Effects of Ta Content and Sintering Temperature on Phase Composition,Microstructure and Electrical Properties of(Li,K,Na)(Nb_(1-x)Ta_x)O_3 Lead-free Piezoelectric Ceramics".(2016).

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