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首页> 外文期刊>Journal of Materials Science >Effect of CuO on the microstructure and electrical properties of Ba0.85Ca0.15Ti0.90Zr0.10O3 piezoceramics
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Effect of CuO on the microstructure and electrical properties of Ba0.85Ca0.15Ti0.90Zr0.10O3 piezoceramics

机译：CuO对Ba0.85 Ca0.15 Ti0.90 Zr0.10 O3 压电陶瓷的微观结构和电性能的影响

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摘要

In this study, the effect of CuO content on the microstructure and electrical properties of Ba0.85Ca0.15Ti0.90Zr0.10O3 (BCZT) ceramics was systematically studied. The addition of CuO effectively results in an increase of grain sizes in BCZT ceramics. BCZT ceramics endure a lattice distortion due to the Cu2+ part substitution for the Ti4+ site, and a low-sintering temperature of BCTZ ceramics is induced by the addition of CuO. With increasing CuO content, the dielectric constant and the dielectric loss of BCTZ ceramics decrease, together with the decrease of the remanent polarization and the coercive field. Effects of sintering temperature and dwell time on the microstructure and electrical properties of BCZT ceramics with x = 0.5 mol% CuO were also studied, and an optimum sintering condition helps to further improve its electrical properties. BCZT ceramics with x = 0.5 mol% CuO possess optimum electrical properties: d 33 ~ 403 pC/N and k p ~ 44.6% when sintered at a low temperature of 1400 °C for 6 h. As a result, BCZT ceramics with a sintering aid of CuO are a promising candidate for the transducer and transformer applications.
机译：本研究中CuO含量对Ba0.85 Ca0.15 Ti0.90 Zr0.10 O3 的微观结构和电性能的影响（对BCZT）陶瓷进行了系统的研究。 CuO的添加有效地导致BCZT陶瓷的晶粒尺寸增加。 BCZT陶瓷由于Cu2 +部分替代Ti4 +位而承受晶格畸变，并且通过添加CuO引起BCTZ陶瓷的低烧结温度。随着CuO含量的增加，BCTZ陶瓷的介电常数和介电损耗降低，剩余极化率和矫顽场降低。还研究了烧结温度和停留时间对x = 0.5 mol％CuO的BCZT陶瓷的微观结构和电性能的影响，并且最佳的烧结条件有助于进一步改善其电性能。 x = 0.5 mol％CuO的BCZT陶瓷具有最佳的电性能：在1400°C的低温下烧结6 h，d 33〜403 pC / N和k p〜44.6％。因此，带有CuO烧结助剂的BCZT陶瓷是换能器和变压器应用的有希望的候选者。

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  • 来源
    《Journal of Materials Science》 |2012年第11期|p.4612-4619|共8页
  • 作者

    Tao Chen; Ting Zhang; Guangchang Wang; Jifang Zhou; Jianwei Zhang; Yuhong Liu;

  • 作者单位

    Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China;

    Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China;

    Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China;

    Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China;

    Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China;

    Teaching and Research Section of Physics, Chengdu Medical College, Chengdu, 610083, People’s Republic of China;

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