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CaTiO3-LaAlO3-based microwave dielectric ceramic and preparation method thereof
The invention provides CaTiO3-LaAlO3-based microwave dielectric ceramic and a preparation method thereof. The CaTiO3-LaAlO3-based microwave dielectric ceramic comprises one or a combination of principal crystal ceramic, a doping phase or sintering-assisting ceramic powder, the main crystal ceramic is (1-x) CaTiO3-xLaAlO3, and x is more than or equal to 0.30 and less than or equal to 0.35; the doping phase is CeO2, and the sintering-assisting ceramic powder is one or more of Li2ZnTi3O8 ceramic powder, Li2MgTi3O8 ceramic powder and BaZn2Ti4O11 ceramic powder. The CaTiO3-LaAlO3-based microwave dielectric ceramic disclosed by the invention can be sintered at 1280-1400 DEG C, is good in compactness and excellent in dielectric property, has a dielectric constant of 40-48, a Q * f value of 20000-38000 GHz and a temperature coefficient of resonance frequency of-10-10 ppm/DEG C, and has a practical application value in microwave devices in the field of communication.
本发明提供一种CaTiO3‑LaAlO3基微波介质陶瓷及其制备方法，包括主晶陶瓷，掺杂相或助烧陶瓷粉中的一种或组合；主晶陶瓷为(1‑x)CaTiO3‑xLaAlO3，0.30≤x≤0.35；掺杂相为CeO2，助烧陶瓷粉为Li2ZnTi3O8陶瓷粉、Li2MgTi3O8陶瓷粉、BaZn2Ti4O11陶瓷粉中的一种或多种。本发明中的CaTiO3‑LaAlO3基微波介质陶瓷可在1280～1400℃烧结，致密性良好，介电性能优良，介电常数为40～48，Q*f值为20000～38000GHz，谐振频率温度系数为‑10～10ppm/℃，在通信领域微波器件具有实际应用价值。
CaTiO3-LaAlO3-based microwave dielectric ceramic and preparation method thereof
The invention provides CaTiO3-LaAlO3-based microwave dielectric ceramic and a preparation method thereof. The CaTiO3-LaAlO3-based microwave dielectric ceramic comprises one or a combination of principal crystal ceramic, a doping phase or sintering-assisting ceramic powder, the main crystal ceramic is (1-x) CaTiO3-xLaAlO3, and x is more than or equal to 0.30 and less than or equal to 0.35; the doping phase is CeO2, and the sintering-assisting ceramic powder is one or more of Li2ZnTi3O8 ceramic powder, Li2MgTi3O8 ceramic powder and BaZn2Ti4O11 ceramic powder. The CaTiO3-LaAlO3-based microwave dielectric ceramic disclosed by the invention can be sintered at 1280-1400 DEG C, is good in compactness and excellent in dielectric property, has a dielectric constant of 40-48, a Q * f value of 20000-38000 GHz and a temperature coefficient of resonance frequency of-10-10 ppm/DEG C, and has a practical application value in microwave devices in the field of communication.
本发明提供一种CaTiO3‑LaAlO3基微波介质陶瓷及其制备方法，包括主晶陶瓷，掺杂相或助烧陶瓷粉中的一种或组合；主晶陶瓷为(1‑x)CaTiO3‑xLaAlO3，0.30≤x≤0.35；掺杂相为CeO2，助烧陶瓷粉为Li2ZnTi3O8陶瓷粉、Li2MgTi3O8陶瓷粉、BaZn2Ti4O11陶瓷粉中的一种或多种。本发明中的CaTiO3‑LaAlO3基微波介质陶瓷可在1280～1400℃烧结，致密性良好，介电性能优良，介电常数为40～48，Q*f值为20000～38000GHz，谐振频率温度系数为‑10～10ppm/℃，在通信领域微波器件具有实际应用价值。
CaTiO3-LaAlO3-based microwave dielectric ceramic and preparation method thereof
一种CaTiO3-LaAlO3基微波介质陶瓷及其制备方法
SHANGGUAN DUANDAN (author) / LAN KAIDONG (author) / LI ZIHAO (author)
2024-03-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Microwave and terahertz dielectric properties of MgTiO3–CaTiO3 ceramics
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