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Preparation method and application of lead magnesium niobate-lead titanate dielectric ceramic material with low loss and high dielectric constant
The invention relates to the technical field of functional ceramics, and discloses a preparation method and application of a low-loss high-dielectric-constant lead magnesium niobate-lead titanate dielectric ceramic material, a PMN-PT relaxation ferroelectric ceramic material is included, the chemical structural formula of the PMN-PT relaxation ferroelectric ceramic material is xPb (Mg1/3Nb2/3)-yPbTiO3 (hereinafter referred to as PMN-PT), x is greater than or equal to 0.9 and less than or equal to 1.0, y is greater than or equal to 0 and less than or equal to 0.1, and x + y is equal to 1.0, according to the PMN-PT relaxor ferroelectric ceramic material, y is more than or equal to 0.05 and less than or equal to 0.1, the used raw materials are electronic-grade PbO, TiO2, MgCO3 and Nb2O5, red lead and yellow lead can be used for introducing the PbO, and magnesium salts such as MgO, Mg (OH) 2 and the like can be adopted for introducing the MgCO3. According to the preparation method and application of the low-loss high-dielectric-constant lead magnesium niobate-lead titanate dielectric ceramic material, PMN-PT ceramic fracture prepared by the preparation method is compact, the grain size is uniform, the grain size is 3-5 microns, the Curie point of the ceramic material is adjustable at 0-40 DEG C, and the Curie point moves towards the high temperature direction along with the increase of the lead titanate content.
本发明涉及功能陶瓷技术领域，且公开了一种低损耗高介电常数铌镁酸铅‑钛酸铅介质陶瓷材料制备方法及其应用，包括PMN‑PT弛豫铁电陶瓷材料，所述PMN‑PT弛豫铁电陶瓷材料的化学结构式为xPb(Mg1/3Nb2/3)‑yPbTiO3(以下简称PMN‑PT)，其中0.9≤x≤1.0，0≤y≤0.1，x+y＝1.0，所述PMN‑PT弛豫铁电陶瓷材料，其中优选的配比为0.05≤y≤0.1，所使用的原材料为电子级的PbO，TiO2，MgCO3和Nb2O5，PbO的引入可以使用红丹和黄丹，MgCO3的引入可以采用MgO，Mg(OH)2等镁盐。该低损耗高介电常数铌镁酸铅‑钛酸铅介质陶瓷材料制备方法及其应用，本发明制备的PMN‑PT陶瓷断口致密，晶粒大小均匀，晶粒尺寸3‑5um，陶瓷材料的居里点在0‑40℃可调，且随着钛酸铅含量的增加，居里点向高温方向移动。
Preparation method and application of lead magnesium niobate-lead titanate dielectric ceramic material with low loss and high dielectric constant
The invention relates to the technical field of functional ceramics, and discloses a preparation method and application of a low-loss high-dielectric-constant lead magnesium niobate-lead titanate dielectric ceramic material, a PMN-PT relaxation ferroelectric ceramic material is included, the chemical structural formula of the PMN-PT relaxation ferroelectric ceramic material is xPb (Mg1/3Nb2/3)-yPbTiO3 (hereinafter referred to as PMN-PT), x is greater than or equal to 0.9 and less than or equal to 1.0, y is greater than or equal to 0 and less than or equal to 0.1, and x + y is equal to 1.0, according to the PMN-PT relaxor ferroelectric ceramic material, y is more than or equal to 0.05 and less than or equal to 0.1, the used raw materials are electronic-grade PbO, TiO2, MgCO3 and Nb2O5, red lead and yellow lead can be used for introducing the PbO, and magnesium salts such as MgO, Mg (OH) 2 and the like can be adopted for introducing the MgCO3. According to the preparation method and application of the low-loss high-dielectric-constant lead magnesium niobate-lead titanate dielectric ceramic material, PMN-PT ceramic fracture prepared by the preparation method is compact, the grain size is uniform, the grain size is 3-5 microns, the Curie point of the ceramic material is adjustable at 0-40 DEG C, and the Curie point moves towards the high temperature direction along with the increase of the lead titanate content.
本发明涉及功能陶瓷技术领域，且公开了一种低损耗高介电常数铌镁酸铅‑钛酸铅介质陶瓷材料制备方法及其应用，包括PMN‑PT弛豫铁电陶瓷材料，所述PMN‑PT弛豫铁电陶瓷材料的化学结构式为xPb(Mg1/3Nb2/3)‑yPbTiO3(以下简称PMN‑PT)，其中0.9≤x≤1.0，0≤y≤0.1，x+y＝1.0，所述PMN‑PT弛豫铁电陶瓷材料，其中优选的配比为0.05≤y≤0.1，所使用的原材料为电子级的PbO，TiO2，MgCO3和Nb2O5，PbO的引入可以使用红丹和黄丹，MgCO3的引入可以采用MgO，Mg(OH)2等镁盐。该低损耗高介电常数铌镁酸铅‑钛酸铅介质陶瓷材料制备方法及其应用，本发明制备的PMN‑PT陶瓷断口致密，晶粒大小均匀，晶粒尺寸3‑5um，陶瓷材料的居里点在0‑40℃可调，且随着钛酸铅含量的增加，居里点向高温方向移动。
Preparation method and application of lead magnesium niobate-lead titanate dielectric ceramic material with low loss and high dielectric constant
一种低损耗高介电常数铌镁酸铅-钛酸铅介质陶瓷材料制备方法及其应用
BAI XUCHUN (Autor:in) / DU BINGCHUN (Autor:in) / CHANG FEI (Autor:in) / ZHANG DIANDE (Autor:in) / WEI CHONG (Autor:in) / GENG QINGKUN (Autor:in)
15.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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