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High-quality factor lithium-magnesium-niobium-series microwave dielectric ceramic
The invention discloses high-quality factor lithium-magnesium-niobium-series microwave dielectric ceramic. The ceramic has a chemical formula of Li3(Mg0.95A0.05)2NbO6, wherein A=Ca<2+>, Ni<2+>, Zn<2+> and Mn<2+>. Li2CO3, MgO, CaCO3, NiCO3, ZnO, MnCO3 and Nb2O5 are blended according to the chemical formula, is subjected to ball mill, drying and sieving, the powder is subjected to calcining, secondary ball milling and granulation, the granules are pressed to form a blank, and the blank is sintered at a temperature of 1120-1180 DEG C to form the lithium-magnesium-niobium-series microwave dielectric ceramic. The lithium-magnesium-niobium-series microwave dielectric ceramic has dielectric constant of 12.29-15.62, a quality factor of 52700-96160 GH and a resonant frequency temperature coefficient of -23.08 to -18.47ppm/DEG C, can be prepared by simple and eco-friendly processes and has a use prospect.
High-quality factor lithium-magnesium-niobium-series microwave dielectric ceramic
The invention discloses high-quality factor lithium-magnesium-niobium-series microwave dielectric ceramic. The ceramic has a chemical formula of Li3(Mg0.95A0.05)2NbO6, wherein A=Ca<2+>, Ni<2+>, Zn<2+> and Mn<2+>. Li2CO3, MgO, CaCO3, NiCO3, ZnO, MnCO3 and Nb2O5 are blended according to the chemical formula, is subjected to ball mill, drying and sieving, the powder is subjected to calcining, secondary ball milling and granulation, the granules are pressed to form a blank, and the blank is sintered at a temperature of 1120-1180 DEG C to form the lithium-magnesium-niobium-series microwave dielectric ceramic. The lithium-magnesium-niobium-series microwave dielectric ceramic has dielectric constant of 12.29-15.62, a quality factor of 52700-96160 GH and a resonant frequency temperature coefficient of -23.08 to -18.47ppm/DEG C, can be prepared by simple and eco-friendly processes and has a use prospect.
High-quality factor lithium-magnesium-niobium-series microwave dielectric ceramic
ZHANG PING (Autor:in) / ZHAO YONGGUI (Autor:in)
24.02.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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