无机材料学报Issue(7)：758-762,5.DOI:10.3724/SP.J.1077.2014.13563
多孔PZT95/5铁电陶瓷的机械性能和铁电性能研究
Investigation on the Mechanical and Ferroelectric Properties of the Porous PZT 95/5 Ceramics
摘要
Abstract
Porous lead zirconate titanate (PZT95/5) ceramics were prepared by adding pore formers. The effects of pore structures including porosity, pore size and pore shape on the mechanical and ferroelectric properties of the porous PZT95/5 ceramics and their mechanisms were investigated, and the relationships between the microstruc-tures and the mechanical and ferroelectric properties were revealed. The results showed that increase in porosity improved the acoustic impedance matching between ceramics and encapsulating materials by reducing the sound impedance values. With increase in porosity, the yield stress and remnant polarization (Pr) of the porous PZT95/5 ceramics decreased, while the coercive electric field increased. The porous PZT95/5 ceramics with spherical pores exhibited higher yield stress and remnant polarization (Pr) than that with irregular pores. The porous PZT95/5 ce-ramics with larger pore size exhibited lower yield stress and remnant polarization. However, compared with pore shape, pore size had minor effects on the yield stress and remnant polarization properties of the porous PZT95/5 ceramics. The effect of pore structure on the yield stress could be explained by stress concentration theory. The mi-croscopic internal stress combined with space-charge theory was used to explain the variation of the remnant po-larization with the pore structure.关键词
多孔/PZT95/5陶瓷/铁电性能/应力集中/机械性能Key words
porous PZT95/5 ceramics/ferroelectric properties/stress concentration/mechanical properties分类
信息技术与安全科学引用本文复制引用
曾涛,白杨,沈喜训,王保峰,董显林,周志勇..多孔PZT95/5铁电陶瓷的机械性能和铁电性能研究[J].无机材料学报,2014,(7):758-762,5.基金项目
上海市浦江人才计划(11PJ1404200) （11PJ1404200）
上海市教委科研创新项目(13YZ106) （13YZ106）
中国科学院无机功能材料与器件重点实验室开放课题(KLIFMD-2011-08) Shanghai Pujiang Program (11PJ1404200) （KLIFMD-2011-08）
Innovation Program of Shanghai Municipal Education Commission (13YZ106) （13YZ106）
Key Laboratory of Inorganic Function Material and Device, Chinese Academy of Sciences (KLIFMD-2011-08) （KLIFMD-2011-08）
