锆钛酸铅陶瓷在力电耦合场下疲劳性能的评价

doi:10.3724/SP.J.1077.2012.00358

无机材料学报 ›› 2012, Vol. 27 ›› Issue (4): 358-362.DOI: 10.3724/SP.J.1077.2012.00358 CSTR: 32189.14.SP.J.1077.2012.00358

锆钛酸铅陶瓷在力电耦合场下疲劳性能的评价

邓启煌^1,3, 王连军¹, 王宏志¹, 江莞^2,3

(1. 东华大学纤维材料改性国家重点实验室, 上海201620; 2. 东华大学先进玻璃制造技术教育部工程研究中心, 上海 201620; 3. 中国科学院上海硅酸盐研究所, 上海 200050)

收稿日期:2011-08-15 修回日期:2011-10-31 出版日期:2012-04-10 网络出版日期:2012-03-12
作者简介:邓启煌(1982-), 男, 博士研究生. E-mail: dengqihuang@mail.dhu.edu.cn
基金资助:
上海市科学技术委员会基础研究重点项目(10JC1400500);上海市重点学科项目(B603);航空科学基金(201108M2001)

Evaluation of Fatigue of the Lead Zirconate Titanate Ceramics under Electro-mechanical Coupling Field

DENG Qi-Huang^1,3, WANG Lian-Jun¹, WANG Hong-Zhi¹, JIANG Wan^2,3

(1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China; 2. Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620, China; 3. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2011-08-15 Revised:2011-10-31 Published:2012-04-10 Online:2012-03-12
About author:DENG Qi-Huang. E-mail: dengqihuang@mail.dhu.edu.cn
Supported by:
Shanghai Science and Technology Committee, Key Project of Foundation Research (10JC1400500);Shanghai Leading Academic Discipline Project (B603);Aeronautical Science Foundation of China Project (201108M2001)

摘要/Abstract

摘要：

小样品力学性能试验方法(Modified Small Punch Tests, 简称MSP)是评价陶瓷材料力学性能的一种有效方法. 采用改进型多场耦合小冲压(MSP)试验法评价了Pb(Zr,Ti)O₃陶瓷(PZT)在力电耦合和纯力场下的疲劳性能. 通过对比在纯力场和力电耦合下的力学性能可以看出: 与纯力场下相比, PZT陶瓷在力电耦合下的断裂强度会降低. 在力场和电场的同时作用下, 疲劳寿命显著缩短, 压电陶瓷材料内部易出现沿晶断裂.

关键词: 力电耦合, 小样品力学试验, 疲劳性能, PZT

Abstract:

Modified small punch (MSP) tests are effective evaluation methods for mechanical properties by using small specimens. Fatigue properties of PZT ceramics under electro-mechanical coupling field and pure force field were evaluated with multi-fields coupling MSP tests. It is found that the fracture strength of the samples under electro- mechanical field would sharply decrease, compared with the samples under pure force field. Fatigue life would decrease greatly and intergranular fracture would happen easily under electro-mechanical coupling field.

Key words: electromechanical coupling, modified small punch test, fatigue properties, PZT

中图分类号:

TQ174

邓启煌, 王连军, 王宏志, 江莞. 锆钛酸铅陶瓷在力电耦合场下疲劳性能的评价[J]. 无机材料学报, 2012, 27(4): 358-362.

DENG Qi-Huang, WANG Lian-Jun, WANG Hong-Zhi, JIANG Wan. Evaluation of Fatigue of the Lead Zirconate Titanate Ceramics under Electro-mechanical Coupling Field[J]. Journal of Inorganic Materials, 2012, 27(4): 358-362.

图/表 5

图1 MSP试验法模具示意图(a)和强度计算模型(b)

Fig. 1 Schematic drawing of MSP-testing apparatus (a) and model for strength calculation (b)

图2 不同载荷速率下PZT陶瓷的MSP强度

Fig. 2 MSP strength of PZT ceramic under different loading rates

图3 (a)纯力场下, (b)力电耦合下E=700sin(100πt) V/mm lgσf和lg(dσ/dt)

Fig.3 Relation between lgσf and lg(dσ/dt) (a) force load, (b) electromechanical coupling load E=700sin (100πt) V/mm

图4 PZT陶瓷的MSP强度随破坏时间的变化(a)纯力场下, (b)力电耦合下E=700sin(100πt) V/mm

Fig. 4 MSP strength of PZT ceramic versus time to failure (a) force load; (b) electromechanical coupling load E= 700sin (100πt) V/mm

图5 PZT陶瓷断面SEM照片(a)纯力场下, (b)力电耦合场下

Fig. 5 SEM micrographs of fracture surfaces of the PZT ceramics under (a) force load, (b) electromechanical coupling load E=700sin (100πt) V/mm

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锆钛酸铅陶瓷在力电耦合场下疲劳性能的评价

Evaluation of Fatigue of the Lead Zirconate Titanate Ceramics under Electro-mechanical Coupling Field

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