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High-dielectric-constant microwave dielectric ceramic for MLCC and preparation method of high-dielectric-constant microwave dielectric ceramic
The invention relates to a microwave dielectric ceramic with high dielectric constant and low loss for an MLCC (multilayer ceramic capacitor) and a preparation method of the microwave dielectric ceramic. The chemical composition formula of the microwave dielectric ceramic is aBaO-bTiO2-cSm2O3-dBi2O3-eLa2O3-fMnO2. Wherein a, b, c, d, e and f are molar ratio contents, and the sintering temperature is 1300-1350 DEG C. The molar ratio a is greater than or equal to 12% and less than or equal to 16%; 65% < = b < = 70%; 10% < = c < = 13%; 1% < = d < = 3%; 2% < = e < = 5%; 0.1% < = e < = 1%. The microwave dielectric ceramic material has the advantages that the composition and the preparation method are reasonable in design, the obtained microwave dielectric ceramic material is good in microwave performance, the dielectric constant is 100 +/-5, the dielectric loss is smaller than or equal to 0.03%, and the capacitance temperature coefficient TCC is smaller than or equal to +/-30 ppm/DEG C. And the preparation method is simple to operate, good in repeatability, low in equipment requirement and very suitable for popularization and application.
本发明是一种MLCC用高介电常数低损耗微波介质陶瓷及其制备方法，化学组成式为aBaO‑bTiO2‑cSm2O3‑dBi2O3‑eLa2O3‑fMnO2。其中a、b、c、d、e、f为摩尔比例含量，烧结温度为1300‑1350℃。其摩尔比例为12％≤a≤16％；65％≤b≤70％；10％≤c≤13％；1％≤d≤3％；2％≤e≤5％；0.1％≤e≤1％。本发明的优点：组成和制备方法设计合理，所得微波介质陶瓷材料微波性能良好，介电常数为100±5，介质损耗≤0.03％，电容温度系数TCC≤±30ppm/℃。且制备方法操作简单，重复性好，对设备要求低，十分适合推广使用。
High-dielectric-constant microwave dielectric ceramic for MLCC and preparation method of high-dielectric-constant microwave dielectric ceramic
The invention relates to a microwave dielectric ceramic with high dielectric constant and low loss for an MLCC (multilayer ceramic capacitor) and a preparation method of the microwave dielectric ceramic. The chemical composition formula of the microwave dielectric ceramic is aBaO-bTiO2-cSm2O3-dBi2O3-eLa2O3-fMnO2. Wherein a, b, c, d, e and f are molar ratio contents, and the sintering temperature is 1300-1350 DEG C. The molar ratio a is greater than or equal to 12% and less than or equal to 16%; 65% < = b < = 70%; 10% < = c < = 13%; 1% < = d < = 3%; 2% < = e < = 5%; 0.1% < = e < = 1%. The microwave dielectric ceramic material has the advantages that the composition and the preparation method are reasonable in design, the obtained microwave dielectric ceramic material is good in microwave performance, the dielectric constant is 100 +/-5, the dielectric loss is smaller than or equal to 0.03%, and the capacitance temperature coefficient TCC is smaller than or equal to +/-30 ppm/DEG C. And the preparation method is simple to operate, good in repeatability, low in equipment requirement and very suitable for popularization and application.
本发明是一种MLCC用高介电常数低损耗微波介质陶瓷及其制备方法，化学组成式为aBaO‑bTiO2‑cSm2O3‑dBi2O3‑eLa2O3‑fMnO2。其中a、b、c、d、e、f为摩尔比例含量，烧结温度为1300‑1350℃。其摩尔比例为12％≤a≤16％；65％≤b≤70％；10％≤c≤13％；1％≤d≤3％；2％≤e≤5％；0.1％≤e≤1％。本发明的优点：组成和制备方法设计合理，所得微波介质陶瓷材料微波性能良好，介电常数为100±5，介质损耗≤0.03％，电容温度系数TCC≤±30ppm/℃。且制备方法操作简单，重复性好，对设备要求低，十分适合推广使用。
High-dielectric-constant microwave dielectric ceramic for MLCC and preparation method of high-dielectric-constant microwave dielectric ceramic
一种MLCC用高介电常数微波介质陶瓷及其制备方法
YOSHIGISHI (Autor:in) / WANG XIAOHUI (Autor:in) / KIM JIN-YONG (Autor:in) / ZHANG BIN (Autor:in)
12.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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