Low-Hysteresis and Lineear Piezoelectric Actuator made from Ultra-fine Particles

由超细颗粒制成的低磁滞线性压电执行器

• 批准号: 03650010
• 负责人: ISHIKAWA Kenji
• 金额: $ 1.15万
• 依托单位: Research Institute of Electronics, Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650010/
• 关键词: PIEZOELECTRIC ACTUATOR; FERROELECTRICS; PZT; ULTRA-FINE PARTICLES; HYSTERESIS; SIZE EFFECT; CERAMICS; ヒステリシス; 圧電アクチュエ-タ

Crystals generally show different characteristics from bulk crystals when their sizes become an order of nanometer. We have been studying this 'size effect' in ferroelectric fine particles for several years and found that the crystal size affects the domain wall movements or the crystallizing process,which establishes a method to synthesize ultra-fine particles. In the present work, we have attempted to improve the hysteresis phenomena or the non-linearity appeared in the relation between the displacement and the applied voltage in piezoelectric PZT actuators. Lead, titanium, and zirconium alkoxides are dissolved in an organic solvent. Hydrolyzing the solution gives PZT fine particles which are still in amorphous state. The amorphous fine particles can be crystallized through the heating at 600ﾟC in air for 5h. The crystallizing temperature is much lower than that of bulk crystals(1280 ﾟC). The lowered temperature enables to obtain ceramics of stoichiometric composition because lead does not evaporate at this temperature. Fine particles obtained are calcined through HIP(hot isostatic pressing) to form a ceramic disc. The ceramic form fine-particles shows quite small hysteresis of an order of 1%, much less than that of conventional ceramics(about 10 %). A typical size of the small particles composing our ceramics is found to be several hundreds nanometers by SEM observation. The size is not still enough small, however, to inhibit the domain wall movement. High resolution TEM observations suggest that fine structures of several nanometers exist in the particles. Thus, the fine structure seems to be 'traces' of boundary of starting powders and should act as pinning points of the wall movement.

当Toir大小成为纳米级时，晶体与大块晶体显示出差异。在PZT ACTUTOR中的施用电压，钛和锆石在有机溶液中。铅在温度下不会蒸发。构成我们的陶瓷是通过SEM观察的纳米，但尺寸仍然不足以抑制域壁的运动。展示的作用是墙运动的钉点。

项目成果

岡田 長也: "PZT微粒子圧電アクチュエータの低ヒステリンス化" 静岡大学電子科学研究科研究報告. 14. (1993)

Nagaya Okada：“PZT粒子压电致动器的低磁滞”静冈大学电子科学研究生院研究报告14。（1993）

Nagaya OKADA: "LowーHysteresys Actuator of AlkoxideーPrepared Pb_<0.96>Sr_<0.04>(Zr_<0.51>Ti_<0.49>)O_3" Japanese Journal of Applied Phydics. 30. 2267-2270 (1991)

Nagaya OKADA：“醇盐制备的 Pb_<0.96>Sr_<0.04>(Zr_<0.51>Ti_<0.49>)O_3 的低滞后致动器”日本应用物理学杂志 30. 2267-2270 (1991)。

Nagaya Okada: "Microstructure of Alkoxido-Prepared Lead Zirconate Titanate Actuator" Japanese Journal of Applied Physics. 31. 3041-3044 (1992)

Nagaya Okada：“醇盐制备的锆钛酸铅致动器的微观结构”日本应用物理学杂志。

N.Okada, K.Ishikawa, T.Nomura, K.Murakami, M.Hagino, S.Fukuoka, N.Nishino and U.Kihara: "Micro-structure of Alkoxide-Prepared Lead Zirconate Titanate Actuator" Jpn.J.Appl.Phys.31. 3041-3044 (1992)

N.Okada、K.Ishikawa、T.Nomura、K.Murakami、M.Hagino、S.Fukuoka、N.Nishino 和 U.Kihara：“醇盐制备的锆钛酸铅致动器的微观结构” Jpn.J.Appl

N.Okada, K.Ishikawa, T.Nomura, K.Murakami, M.Hagino, S.Fukuoka, N.Nishino and U.Kihara: "Low Hysteresis Actuator of Alkoxide-Prepared PZT Powders" Proc. 3rd Int. Conf. High Technol., Chiba. 235-238 (1992)

N.Okada、K.Ishikawa、T.Nomura、K.Murakami、M.Hagino、S.Fukuoka、N.Nishino 和 U.Kihara：“醇盐制备的 PZT 粉末的低磁滞执行器”Proc。