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首页> 外文期刊>Journal of materials science >The effect of artificial stress on structure, electrical and mechanical properties of Sr~(2+) doped BNT-BT lead-free piezoceramics
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The effect of artificial stress on structure, electrical and mechanical properties of Sr~(2+) doped BNT-BT lead-free piezoceramics

机译：人工应力对掺Sr〜（2+）BNT-BT无铅压电陶瓷结构，电学和力学性能的影响

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摘要

The effect of Sr~(2+) doping on the microstructural, electrical and mechanical properties of 0.93(Bi_(0.5)Na_(0.5))TiO_3-0.07BaTiO_3 ceramics was investigated. The X-ray diffraction and Raman results show the phase transition from tetragonal phase to rhom-bohedral phase induced by Sr~(2+) ions. The Sr~(2+) doping promotes grain growth, but refines grains with Sr~(2+) content continuously increasing. Three dielectric anomalies at T_d, T_p and T_m are obvious, and T_d is seriously affected by Sr~(2+) content. The T_d peak is confirmed by the T_l peak at dynamic mechanical analysis. The coercive field (E_c) and remnant polarization (P_r) are modified by grain size effect and phase structure induced by Sr~(2+) doping. The piezoelectric coefficient can be effectively improved by Sr~(2+) doping.
机译：研究了Sr〜（2+）掺杂对0.93（Bi_（0.5）Na_（0.5））TiO_3-0.07BaTiO_3陶瓷微结构，电学和力学性能的影响。 X射线衍射和拉曼光谱结果表明，Sr〜（2+）离子诱导了四方相向菱面体的相变。 Sr〜（2+）的掺杂促进了晶粒的生长，但随着Sr〜（2+）的含量不断增加，使晶粒细化。 T_d，T_p和T_m处的三个介电异常很明显，并且T_d受Sr〜（2+）含量的严重影响。 T_d峰由动态力学分析中的T_1峰确认。 Sr〜（2+）掺杂引起的晶粒尺寸效应和相结构改变了矫顽场（E_c）和剩余极化（P_r）。 Sr〜（2+）掺杂可以有效提高压电系数。

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  • 来源
    《Journal of materials science》 |2019年第24期|21398-21405|共8页
  • 作者

    Chenwan Li; Ling Yang; Jiwen Xu; Changlai Yuan; Changrong Zhou; Hua Wang;

  • 作者单位

    School of Materials Science and Engineering Guilin University of Electronic Technology Guilin 541004 People's Republic of China;

    School of Materials Science and Engineering Guilin University of Electronic Technology Guilin 541004 People's Republic of China Guangxi Key Laboratory of Information Materials Guilin University of Electronic Technology Guilin 541004 People's Republic of China;

  • 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);
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  • 正文语种 eng
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