Piezoelectric ceramic material, method for preparing same and use thereof

CN122233780APending Publication Date: 2026-06-19SHANDONG ZHIDA MICRO TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG ZHIDA MICRO TECHNOLOGY CO LTD
Filing Date
2026-04-30
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing high-temperature sintering process for PZT ceramic materials results in high costs and environmental pollution, while the low-temperature sintering aids lead to a decrease in dielectric loss and mechanical quality factor, which cannot meet the requirements of high-frequency and high-power applications.

Method used

Low-valence K or Na-doped Pb is used as the acceptor dopant, combined with Mn, Li2CO3, Bi3BO6 and Mn2P2O7 additives to reduce the sintering temperature and maintain excellent piezoelectric properties. Densification is promoted through lattice distortion and liquid phase sintering, thereby improving the mechanical quality factor and dielectric properties.

Benefits of technology

It achieves ceramic sintering at temperatures below 900℃, with dielectric loss below 1% and a mechanical quality factor above 1000, making it suitable for high-frequency, high-power piezoelectric devices, reducing production costs and improving material stability and performance.

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Abstract

This invention provides a piezoelectric ceramic material, its preparation method, and its application, belonging to the technical field of piezoelectric ceramic materials. The chemical composition of this piezoelectric ceramic material is: 0.90 (M 0.01 Pb 0.99 (Zr) 0.5 Ti 0.5 O3-0.05Pb(Mn) 1 / 3 Nb 2 / 3 O3-0.05Bi(N) 1 / 2 Ti 1 / 2 The piezoelectric ceramic material of this invention can significantly reduce the sintering temperature while ensuring high density, excellent piezoelectric properties, and most importantly, maintaining extremely low dielectric loss and a high mechanical quality factor. The formula is: O3 + xwt% Li2CO3 + ywt% Bi3BO6 + zwt% Mn2P2O7, where M is K or Na, N is Zn, Ni, or Co, and 0.01≤x≤0.5, 0.005≤y≤0.3, 0.005≤z≤0.3.
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