无机材料学报 ›› 2020, Vol. 35 ›› Issue (8): 857-866.DOI: 10.15541/jim20190492

• 综述 • 上一篇    下一篇

动态热机械分析仪(DMA)在铁电压电材料研究中的应用

陈云(),王旭升(),李艳霞,姚熹   

  1. 同济大学 材料科学与工程学院, 上海 201804
  • 收稿日期:2019-09-25 修回日期:2019-11-12 出版日期:2020-08-20 发布日期:2020-01-20
  • 作者简介:陈 云(1990-), 女, 博士研究生. E-mail:<email>xiaoyun369@126.com</email><br/>CHEN Yun(1990-), female, PhD candidate. E-mail: <email>xiaoyun369@126.com</email>
  • 基金资助:
    国家自然科学基金(51572195)

Dynamic Mechanical Analysis in the Investigation on Ferroelectrics

CHEN Yun(),WANG Xusheng(),LI Yanxia,YAO Xi   

  1. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
  • Received:2019-09-25 Revised:2019-11-12 Online:2020-08-20 Published:2020-01-20
  • Supported by:
    National Natural Science Foundation of China(51572195)

摘要:

动态热机械分析仪(DMA)具有高灵敏度、卓越制冷技术、自由旋转测试头、多种形变模式和连续频率温度扫描模式等优点, 能表征材料在交变应力(或应变)作用下的应变(或应力)的响应、蠕变、应力松弛和热机械性能等, 广泛应用于塑料、热固性材料、复合材料、高弹性体、涂层材料、金属和陶瓷等材料的研究和评估。本文简要介绍了DMA进行动态力学行为分析的基本原理和方法, DMA在铁电相变、低频弛豫特性和铁电疲劳研究方面的应用, 以及DMA在铁电/聚合物复合阻尼材料研究中的应用。在对PZT陶瓷和单晶、BaTiO3陶瓷等常用材料的铁电弛豫特性分析中, DMA表现出比介电表征更为敏感的特性。现在DMA已成为研究铁电材料的重要工具之一。

关键词: 动态热机械分析仪, 铁电材料, 低频弛豫, 铁电疲劳, 阻尼, 综述

Abstract:

Dynamic mechanical analysis (DMA) has the advantage of high sensitivity, excellent cooling system, flexible rotation testing part, multiple deformation mode, and continuous frequency and temperature scanning mode. DMA is able to characterize the strain response under alternating stress, creep, stress relaxation, and thermomechanical properties, which has application in the investigation of plastic, thermoset, composite, high elastomer, coating, alloy and ceramic. This paper briefly introduced the fundamental and method about DMA, the application of DMA in the investigation of ferroelectric-paraelectric phase transformation, low frequency relaxation, ferroelectric fatigue, and ferroelectric composite damping. In the measurement of relaxation behavior of PZT ceramics and single crystals, and BaTiO3 ceramics, DMA tended to be more sensitive than dielectric characterization especially in the low frequency range. DMA has been one of the critical instruments for ferroelecric investigation.

Key words: dynamic mechanical analysis, ferroelectrics, low frequency relaxation, ferroelectric fatigue, damping, review

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