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Method for improving equivalent flexoelectric response of composite ceramic
The invention relates to the field of functional materials, in particular to a method for improving the equivalent flexoelectric response of composite ceramic, which comprises the following steps: S1, firing the composite ceramic into a disc-shaped non-uniform electrode; s2, enabling the sharp end of a needle point electrode to be in contact with the circle center of the disc-shaped non-uniform electrode prepared in the step S1; and S3, applying a voltage of 700-1000V between the needle tip electrode and the disc-shaped non-uniform electrode, and carrying out polarization for 15-30 minutes. The improved equivalent flexoelectric property has good stability, and the method reveals that the pinpoint polarization process is an effective way for improving the equivalent flexoelectric property of the ferroelectric-paraelectric perovskite oxide. The method provided by the invention has better fatigue resistance, is simple and convenient in process, and can be widely applied to sensors, drivers, energy acquisition devices and the like.
本发明涉及功能材料领域，具体涉及一种提升复合陶瓷等效挠曲电响应的方法，包括以下步骤：S1.将复合陶瓷烧制成圆片状不均匀电极；S2.使用针尖电极的尖锐端与步骤S1制备的圆片状不均匀电极的圆心相接触；S3.在针尖电极与圆片状不均匀电极之间施加700～1000V的电压，极化15～30min。本发明提升的等效挠曲电性具有较好的稳定性，此方法揭示了针尖极化工艺是提升铁电‑顺电钙钛矿氧化物等效挠曲电性的有效途径。本发明提供的方法具有较好的耐疲劳特性，工艺简便，可以广泛应用在传感器、驱动器和能量采集等器件中。
Method for improving equivalent flexoelectric response of composite ceramic
The invention relates to the field of functional materials, in particular to a method for improving the equivalent flexoelectric response of composite ceramic, which comprises the following steps: S1, firing the composite ceramic into a disc-shaped non-uniform electrode; s2, enabling the sharp end of a needle point electrode to be in contact with the circle center of the disc-shaped non-uniform electrode prepared in the step S1; and S3, applying a voltage of 700-1000V between the needle tip electrode and the disc-shaped non-uniform electrode, and carrying out polarization for 15-30 minutes. The improved equivalent flexoelectric property has good stability, and the method reveals that the pinpoint polarization process is an effective way for improving the equivalent flexoelectric property of the ferroelectric-paraelectric perovskite oxide. The method provided by the invention has better fatigue resistance, is simple and convenient in process, and can be widely applied to sensors, drivers, energy acquisition devices and the like.
本发明涉及功能材料领域，具体涉及一种提升复合陶瓷等效挠曲电响应的方法，包括以下步骤：S1.将复合陶瓷烧制成圆片状不均匀电极；S2.使用针尖电极的尖锐端与步骤S1制备的圆片状不均匀电极的圆心相接触；S3.在针尖电极与圆片状不均匀电极之间施加700～1000V的电压，极化15～30min。本发明提升的等效挠曲电性具有较好的稳定性，此方法揭示了针尖极化工艺是提升铁电‑顺电钙钛矿氧化物等效挠曲电性的有效途径。本发明提供的方法具有较好的耐疲劳特性，工艺简便，可以广泛应用在传感器、驱动器和能量采集等器件中。
Method for improving equivalent flexoelectric response of composite ceramic
一种提升复合陶瓷等效挠曲电响应的方法
CHEN WEIJIN (author) / LI YUANZHE (author) / TAO JUNYU (author) / XIONG WEIMING (author) / TANG ZHENXUN (author)
2022-07-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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