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Preparation method of bismuth ferrite-lead titanate-bismuth magnesium niobate ternary system high-temperature piezoelectric ceramic
The invention belongs to the field of piezoelectric ceramic materials, and particularly relates to a preparation method of bismuth ferrite-lead titanate-bismuth magnesium niobate ternary system high-temperature piezoelectric ceramic. The chemical formula is (1-x-y) BiFeO3-xPbTiO3-yBi (Mg2/3Nb1/3) O3, x and y are molar weights, and x is more than or equal to 0.20 and less than or equal to 0.40; 0.01 < = y < = 0.10; the auxiliary component is mBi2O3 + nPbO + zMnO, m, n and z are the mass percent of the total formula, and m is larger than or equal to 0 and smaller than or equal to 0.10; 0 < = n < = 0.10; 0 < = z < = 0.10. The preparation method comprises the following steps: S1, weighing the raw materials; s2, carrying out primary ball milling; step S3: drying; s4, performing solid-phase synthesis; step S5, carrying out secondary ball milling; step S6, granulating and forming; step S7, glue discharging; step S8; and step S9. The sintering temperature of a system can be reduced, ceramic densification is promoted, cracking and pulverization are avoided, the ceramic has the good sintering characteristic, the c/a ratio of the system is reduced, the material is easy to polarize, the ceramic obtains the large piezoelectric coefficient under the condition that the high Curie temperature is guaranteed, the insulativity and temperature stability of the material are improved, and the service life of the material is prolonged. And practical application of devices at high temperature is facilitated.
本发明属于压电陶瓷材料领域，具体涉及一种铁酸铋‑钛酸铅‑铌镁酸铋三元体系高温压电陶瓷的制备方法。其化学式为(1‑x‑y)BiFeO3‑xPbTiO3‑yBi(Mg2/3Nb1/3)O3，其中x、y为摩尔量，0.20≤x≤0.40；0.01≤y≤0.10；副成分为mBi2O3+nPbO+zMnO，其中m、n、z为总配方的质量百分比，且0≤m≤0.10；0≤n≤0.10；0≤z≤0.10。制备包括以下步骤：步骤S1：称取原料；步骤S2：一次球磨；步骤S3：烘干；步骤S4：固相合成；步骤S5：二次球磨；步骤S6：造粒成型；步骤S7：排胶；步骤S8；步骤S9。本发明能够降低体系的烧结温度，促进陶瓷致密化，避免发生开裂和粉化，使陶瓷具有较好的烧结特性，降低体系的c/a比，使材料易于极化，使陶瓷在保证较高居里温度的情况下，获得较大的压电系数，提高材料的绝缘性和温度稳定性，有利于器件在高温下的实际应用。
Preparation method of bismuth ferrite-lead titanate-bismuth magnesium niobate ternary system high-temperature piezoelectric ceramic
The invention belongs to the field of piezoelectric ceramic materials, and particularly relates to a preparation method of bismuth ferrite-lead titanate-bismuth magnesium niobate ternary system high-temperature piezoelectric ceramic. The chemical formula is (1-x-y) BiFeO3-xPbTiO3-yBi (Mg2/3Nb1/3) O3, x and y are molar weights, and x is more than or equal to 0.20 and less than or equal to 0.40; 0.01 < = y < = 0.10; the auxiliary component is mBi2O3 + nPbO + zMnO, m, n and z are the mass percent of the total formula, and m is larger than or equal to 0 and smaller than or equal to 0.10; 0 < = n < = 0.10; 0 < = z < = 0.10. The preparation method comprises the following steps: S1, weighing the raw materials; s2, carrying out primary ball milling; step S3: drying; s4, performing solid-phase synthesis; step S5, carrying out secondary ball milling; step S6, granulating and forming; step S7, glue discharging; step S8; and step S9. The sintering temperature of a system can be reduced, ceramic densification is promoted, cracking and pulverization are avoided, the ceramic has the good sintering characteristic, the c/a ratio of the system is reduced, the material is easy to polarize, the ceramic obtains the large piezoelectric coefficient under the condition that the high Curie temperature is guaranteed, the insulativity and temperature stability of the material are improved, and the service life of the material is prolonged. And practical application of devices at high temperature is facilitated.
本发明属于压电陶瓷材料领域，具体涉及一种铁酸铋‑钛酸铅‑铌镁酸铋三元体系高温压电陶瓷的制备方法。其化学式为(1‑x‑y)BiFeO3‑xPbTiO3‑yBi(Mg2/3Nb1/3)O3，其中x、y为摩尔量，0.20≤x≤0.40；0.01≤y≤0.10；副成分为mBi2O3+nPbO+zMnO，其中m、n、z为总配方的质量百分比，且0≤m≤0.10；0≤n≤0.10；0≤z≤0.10。制备包括以下步骤：步骤S1：称取原料；步骤S2：一次球磨；步骤S3：烘干；步骤S4：固相合成；步骤S5：二次球磨；步骤S6：造粒成型；步骤S7：排胶；步骤S8；步骤S9。本发明能够降低体系的烧结温度，促进陶瓷致密化，避免发生开裂和粉化，使陶瓷具有较好的烧结特性，降低体系的c/a比，使材料易于极化，使陶瓷在保证较高居里温度的情况下，获得较大的压电系数，提高材料的绝缘性和温度稳定性，有利于器件在高温下的实际应用。
Preparation method of bismuth ferrite-lead titanate-bismuth magnesium niobate ternary system high-temperature piezoelectric ceramic
一种铁酸铋-钛酸铅-铌镁酸铋三元体系高温压电陶瓷的制备方法
ZHANG AMEI (Autor:in) / DU HONGLIANG (Autor:in) / ZHUANG MENG (Autor:in) / MIAO ZHUANG (Autor:in) / SHANG JUANYE (Autor:in) / FU CAIXIA (Autor:in)
27.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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