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首页> 外文期刊>Journal of materials science >Ferroelectric fatigue mechanism under bipolar electrical loading in KNN lead free piezoelectric ceramic
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Ferroelectric fatigue mechanism under bipolar electrical loading in KNN lead free piezoelectric ceramic

机译：KNN无铅压电陶瓷双极电负载下的铁电疲劳机理

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摘要

The effect of bipolar cyclic electrical loading on the ferroelectric and piezoelectric properties of KNN ceramics is investigated. The results showed that the bipolar fatigue leads to a decrease in domain switchability and piezoelectric responses of the ceramic. In the early period of cyclic loading, the fatigue mechanism is dominated by the domain wall pinning effect. When the number of fatigue cycles increases, the microstructural damage has a large impact on the fatigue process. From this, a qualitative model based on the relationship between domain pinning mechanism and internal stress is proposed.
机译：研究了双极性循环电负载对KNN陶瓷铁电和压电性能的影响。结果表明，双极疲劳导致陶瓷的畴切换性和压电响应降低。在循环载荷的早期，疲劳机制受畴壁钉扎效应支配。当疲劳循环次数增加时，微结构损伤对疲劳过程有很大影响。据此，提出了一种基于域钉扎机制与内应力关系的定性模型。

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  • 来源
    《Journal of materials science》 |2018年第9期|7188-7193|共6页
  • 作者

    Orapim Namsar; Chunmanus Uthaisar; Soodkhet Pojprapai;

  • 作者单位

    School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology;

    School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology;

    School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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