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Lead magnesium niobate-lead zirconate titanate based high-performance piezoelectric ceramic material and preparation method thereof
The invention discloses a lead magnesium niobate-lead zirconate titanate based high-performance piezoelectric ceramic material and a preparation method thereof, and the piezoelectric ceramic is composed of PbO, TiO2, ZrO2, Nb2O5, MgCO3 and other components and La, Sm, Sr, Cr, Ba and other trace elements, and also contains a small amount of SiO2 and Al2O3. According to the preparation method, the piezoelectric ceramic is modified from a structure-function relationship in a solid solution and ion doping compounding manner, and the piezoelectric property, high-temperature stability and mechanical property of the piezoelectric ceramic are optimized by combining advanced processes such as repeated sintering and vacuum evaporation. The piezoelectric ceramic has a high piezoelectric coefficient d33 greater than 850PC/N, a dielectric constant epsilon r greater than 5100 and an electromechanical coupling coefficient kp greater than 0.71, and also obtains a high Curie temperature of 210 DEG C and mechanical properties. The piezoelectric ceramic disclosed by the invention is excellent in comprehensive performance and relatively wide in application prospect, and can be widely applied to preparation of high-performance piezoelectric devices.
本发明公开了一种铌镁酸铅‑锆钛酸铅基的高性能压电陶瓷材料及制备方法，该压电陶瓷由PbO、TiO2、ZrO2、Nb2O5、MgCO3等组份和La、Sm、Sr、Cr、Ba等微量元素组成，其中还有少量SiO2和Al2O3。本发明通过固溶和离子掺杂复合的方式，从构效关系对压电陶瓷进行改性，并结合多次反复烧结和真空蒸镀等先进工艺，优化压电陶瓷的压电性能、高温稳定性和机械性能。该压电陶瓷具有高的压电系数d33＞850PC/N、介电常数εr＞5100和机电耦合系数kp＞0.71，同时获得了较高的居里温度210℃和机械性能。本发明的压电陶瓷综合性能优良，应用前景较大，可广泛用于高性能压电器件的制备。
Lead magnesium niobate-lead zirconate titanate based high-performance piezoelectric ceramic material and preparation method thereof
The invention discloses a lead magnesium niobate-lead zirconate titanate based high-performance piezoelectric ceramic material and a preparation method thereof, and the piezoelectric ceramic is composed of PbO, TiO2, ZrO2, Nb2O5, MgCO3 and other components and La, Sm, Sr, Cr, Ba and other trace elements, and also contains a small amount of SiO2 and Al2O3. According to the preparation method, the piezoelectric ceramic is modified from a structure-function relationship in a solid solution and ion doping compounding manner, and the piezoelectric property, high-temperature stability and mechanical property of the piezoelectric ceramic are optimized by combining advanced processes such as repeated sintering and vacuum evaporation. The piezoelectric ceramic has a high piezoelectric coefficient d33 greater than 850PC/N, a dielectric constant epsilon r greater than 5100 and an electromechanical coupling coefficient kp greater than 0.71, and also obtains a high Curie temperature of 210 DEG C and mechanical properties. The piezoelectric ceramic disclosed by the invention is excellent in comprehensive performance and relatively wide in application prospect, and can be widely applied to preparation of high-performance piezoelectric devices.
本发明公开了一种铌镁酸铅‑锆钛酸铅基的高性能压电陶瓷材料及制备方法，该压电陶瓷由PbO、TiO2、ZrO2、Nb2O5、MgCO3等组份和La、Sm、Sr、Cr、Ba等微量元素组成，其中还有少量SiO2和Al2O3。本发明通过固溶和离子掺杂复合的方式，从构效关系对压电陶瓷进行改性，并结合多次反复烧结和真空蒸镀等先进工艺，优化压电陶瓷的压电性能、高温稳定性和机械性能。该压电陶瓷具有高的压电系数d33＞850PC/N、介电常数εr＞5100和机电耦合系数kp＞0.71，同时获得了较高的居里温度210℃和机械性能。本发明的压电陶瓷综合性能优良，应用前景较大，可广泛用于高性能压电器件的制备。
Lead magnesium niobate-lead zirconate titanate based high-performance piezoelectric ceramic material and preparation method thereof
一种铌镁酸铅-锆钛酸铅基的高性能压电陶瓷材料及制备方法
DU WENYI (author) / HU HUIMING (author) / MA LEI (author)
2023-11-28
Patent
Electronic Resource
Chinese
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