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Study of Electrical Fatigue of Ferroelectric Ceramics

机译:铁电陶瓷的电疲劳研究

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摘要

The electric fatigue properties of ferroelectric ceramics were investigated systematically. A critical frequency of electric field was found for the deterioration of ferroelectric polarization. Model experiments implied that electrode ions might immigrate into bulk ceramics under the application of electric field and internal stress increased due to reorientation of ferroelectric domains. Secondary phases including silver, zirconia and layered perovskite ferroelectric particles were incorporated into ferroelectric bulks, and proved to improve the fatigue endurance of ferroelectric ceramics. The release of internal stress and weakening of internal field owing to secondary phases incorporation were believed to be responsible for it.
机译:系统地研究了铁电陶瓷的电疲劳性能。发现电场的临界频率对于铁电极化的恶化。模型实验表明,在电场的作用下,电极离子可能会迁移到块状陶瓷中,并且由于铁电畴的重新定向,内部应力会增加。包括银,氧化锆和层状钙钛矿铁电颗粒的第二相被掺入铁电体中,并被证明可以改善铁电陶瓷的疲劳强度。人们认为,由于次级相的引入,内部应力的释放和内部电场的减弱是造成这种情况的原因。

著录项

  • 来源
    《Key Engineering Materials》 |2003年第2003期|p.365-370|共6页
  • 作者

    Longtu Li; Ningxin Zhang;

  • 作者单位

    State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China P.R.;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程基础科学;
  • 关键词

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