Creep behavior of soft and hard PZT ceramics during mechanical loading   and unloading

doi:10.1016/j.jeurceramsoc.2015.06.019

CORC > 北京大学 > 工学院

	Creep behavior of soft and hard PZT ceramics during mechanical loading and unloading
	Li, Y. W. ; Li, Y. H. ; Li, F. X.
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2015
关键词	PZT ceramics Domain switching Creep Internal bias field Defect dipole LEAD-ZIRCONATE-TITANATE ROOM-TEMPERATURE CREEP FERROELECTRIC CERAMICS FERROELASTIC BEHAVIOR COMPRESSIVE CREEP ELECTRIC-FIELDS BARIUM TITANATE PIEZOACTUATORS PIEZOCERAMICS COMPENSATION
DOI	10.1016/j.jeurceramsoc.2015.06.019
英文摘要	The creep behavior of strain and electrical polarization in two poled PZT with different compositions was investigated during stress loading and unloading. Being different from the standard testing methods, the creep behaviors at all stress levels were characterized using a single sample, rather than a fresh sample at each load level. During loading, the creep of polarization and strain are observed at higher stress than that in soft PZT due to the effect of internal bias field. During unloading, significant recovery of strain and polarization was observed in the hard PZT, demonstrating that a compressive stress of 380 MPa cannot reorient the ordered defect dipoles in Fe doped hard PZT. Two equations P-0.5 = alpha(1) log (t + t(0)) + beta(1) and S-creep(0.5) = a(2) log (t + t(0)) + beta S-2(creep)0.5 = a(2) log (t + t(0)) + beta(2) were summarized to describe the creep polarization and the creep strain, respectively. Compared with the conventional power law creep equations, the two equations can fit the experimental results well in the whole range of stress holding. (C) 2015 Elsevier Ltd. All rights reserved.; research start-up foundation of Wuhan University; NSF of China [11402177]; SCI(E); EI; ARTICLE; yingweili@whu.edu.cn; lifaxin@pku.edu.cn; 14; 3827-3834; 35
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415521]
专题	工学院
推荐引用方式 GB/T 7714	Li, Y. W.,Li, Y. H.,Li, F. X.. Creep behavior of soft and hard PZT ceramics during mechanical loading and unloading[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2015.
APA	Li, Y. W.,Li, Y. H.,&Li, F. X..(2015).Creep behavior of soft and hard PZT ceramics during mechanical loading and unloading.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY.
MLA	Li, Y. W.,et al."Creep behavior of soft and hard PZT ceramics during mechanical loading and unloading".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2015).