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<p>Piezoelectric ceramics based on lead zirconate titanate are widely used in sensors, actuators, and transducers, but achieving high density and reliable performance for high-power applications remains a major challenge. This study explores optimization of high-power performance through hot-pressing. The combined effect of external pressure and sintering aids reduces the sintering temperature from 1175 °C to 900 °C, minimizing lead volatilization while promoting densification. Sintering in an inert atmosphere generates oxygen vacancies that act as domain-pinning centers, thereby enhancing the stability of piezoelectric properties under high-power conditions. Hot-pressed ceramics reach a maximum vibration velocity of 2.5 m/s, compared with 1.7 m/s for conventionally sintered samples, and the mechanical quality factor remains far more stable at elevated vibration levels. These results provide a practical pathway to improve the durability, efficiency, and reliability of piezoelectric devices in demanding high-power applications.</p>

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High-power performance enhancement in PZT-based piezoceramics via hot-pressing

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月5日

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  • Wan-Ting Cao,
  • Ze Xu,
  • Zhixiang Zhu,
  • Zilong Geng,
  • Jing-Tong Lu,
  • Ziqing Zhong,
  • Hao-Feng Huang,
  • Jia-Xin Liu,
  • Yuqi Jiang,
  • Yi-Xuan Liu,
  • Weiwei Gao,
  • Dongze Zhu,
  • Kai Huang,
  • Mupeng Zheng,
  • Ke Bi,
  • Ke Wang

摘要

Piezoelectric ceramics based on lead zirconate titanate are widely used in sensors, actuators, and transducers, but achieving high density and reliable performance for high-power applications remains a major challenge. This study explores optimization of high-power performance through hot-pressing. The combined effect of external pressure and sintering aids reduces the sintering temperature from 1175 °C to 900 °C, minimizing lead volatilization while promoting densification. Sintering in an inert atmosphere generates oxygen vacancies that act as domain-pinning centers, thereby enhancing the stability of piezoelectric properties under high-power conditions. Hot-pressed ceramics reach a maximum vibration velocity of 2.5 m/s, compared with 1.7 m/s for conventionally sintered samples, and the mechanical quality factor remains far more stable at elevated vibration levels. These results provide a practical pathway to improve the durability, efficiency, and reliability of piezoelectric devices in demanding high-power applications.