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Ultrahigh dielectric constant emission type piezoelectric ceramic material and preparation method thereof
The invention discloses an ultrahigh dielectric constant emission type piezoelectric ceramic material and a preparation method thereof, and belongs to the technical field of piezoelectric ceramic manufacturing, the composition of the piezoelectric ceramic material is represented by the following chemical general formula: Pb1-m-nSrmCan [(Mn1/3W2/3) x (Co1/3Nb2/3) y (ZrzTi1-z) 1-x-y) O3 + awt% Fe2O3 + bwt% CeO2, in which 0.06 < = m < = 0.10, 0 < = n < = 0.05, 0.03 < = x < = 0.10, 0.05 < = y < = 0.09, 0.47 < = z < = 0.53, 0 < = a < = 0.09, and 0 < = b < = 0.05. The prepared piezoelectric ceramic material not only has an ultrahigh dielectric constant (epsilon r3T is greater than or equal to 2600), but also has the characteristics of high coupling coefficient (kp is greater than or equal to 0.56), low dielectric loss (tg delta is less than or equal to 0.4%), moderate mechanical quality factor (Qm is greater than or equal to 400) and the like, and is an emission type piezoelectric ceramic material with excellent comprehensive performance; the diverse requirements of an underwater acoustic transmitting transducer on the performance of the piezoelectric ceramic material can be met, and the piezoelectric ceramic material has a wide application prospect in the fields of underwater sound, national defense industry and the like.
本发明公开了一种超高介电常数发射型压电陶瓷材料及其制备方法，属于压电陶瓷制造技术领域，该压电陶瓷材料的组成由下列化学通式来表示：Pb1‑m‑nSrmCan[(Mn1/3W2/3)x(Co1/3Nb2/3)y(ZrzTi1‑z)1‑x‑y]O3+awt％Fe2O3+bwt％CeO2，其中0.06≤m≤0.10，0≤n≤0.05，0.03≤x≤0.10，0.05≤y≤0.09，0.47≤z≤0.53，0≤a≤0.09,0≤b≤0.05。制备出的压电陶瓷材料不仅具有超高介电常数(εr3T≥2600)，同时还具有高耦合系数(kp≥0.56)，低介电损耗(tgδ≤0.4％)及适中的机械品质因数(Qm≥400)等特点,是一种综合性能优良的发射型压电陶瓷材料，能够满足水声发射换能器对压电陶瓷材料性能的多样化需求，在水声以及国防工业等领域具备广阔的应用前景。
Ultrahigh dielectric constant emission type piezoelectric ceramic material and preparation method thereof
The invention discloses an ultrahigh dielectric constant emission type piezoelectric ceramic material and a preparation method thereof, and belongs to the technical field of piezoelectric ceramic manufacturing, the composition of the piezoelectric ceramic material is represented by the following chemical general formula: Pb1-m-nSrmCan [(Mn1/3W2/3) x (Co1/3Nb2/3) y (ZrzTi1-z) 1-x-y) O3 + awt% Fe2O3 + bwt% CeO2, in which 0.06 < = m < = 0.10, 0 < = n < = 0.05, 0.03 < = x < = 0.10, 0.05 < = y < = 0.09, 0.47 < = z < = 0.53, 0 < = a < = 0.09, and 0 < = b < = 0.05. The prepared piezoelectric ceramic material not only has an ultrahigh dielectric constant (epsilon r3T is greater than or equal to 2600), but also has the characteristics of high coupling coefficient (kp is greater than or equal to 0.56), low dielectric loss (tg delta is less than or equal to 0.4%), moderate mechanical quality factor (Qm is greater than or equal to 400) and the like, and is an emission type piezoelectric ceramic material with excellent comprehensive performance; the diverse requirements of an underwater acoustic transmitting transducer on the performance of the piezoelectric ceramic material can be met, and the piezoelectric ceramic material has a wide application prospect in the fields of underwater sound, national defense industry and the like.
本发明公开了一种超高介电常数发射型压电陶瓷材料及其制备方法，属于压电陶瓷制造技术领域，该压电陶瓷材料的组成由下列化学通式来表示：Pb1‑m‑nSrmCan[(Mn1/3W2/3)x(Co1/3Nb2/3)y(ZrzTi1‑z)1‑x‑y]O3+awt％Fe2O3+bwt％CeO2，其中0.06≤m≤0.10，0≤n≤0.05，0.03≤x≤0.10，0.05≤y≤0.09，0.47≤z≤0.53，0≤a≤0.09,0≤b≤0.05。制备出的压电陶瓷材料不仅具有超高介电常数(εr3T≥2600)，同时还具有高耦合系数(kp≥0.56)，低介电损耗(tgδ≤0.4％)及适中的机械品质因数(Qm≥400)等特点,是一种综合性能优良的发射型压电陶瓷材料，能够满足水声发射换能器对压电陶瓷材料性能的多样化需求，在水声以及国防工业等领域具备广阔的应用前景。
Ultrahigh dielectric constant emission type piezoelectric ceramic material and preparation method thereof
一种超高介电常数发射型压电陶瓷材料及其制备方法
WU FAN (author) / GAI XUEZHOU (author) / WANG YUEQUN (author) / WANG GANG (author)
2024-09-20
Patent
Electronic Resource
Chinese
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