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Low-loss, temperature-stabilized and ultra-low dielectric constant type microwave dielectric ceramic LiZnV5O14
The invention discloses a temperature-stabilized and ultra-low dielectric constant type microwave dielectric ceramic LiZnV5O1 capable of being sintered at low temperature and a preparation method thereof. The method comprises the following steps: (1) weighting and mixing raw powder with purity exceeding 99.9% by weight of Li2CO3, ZnO and V2O5 according to the composition of the LiZnV5O1; (2) performing ball milling and mixing for the raw materials obtained in step (1) by a wet manner for 12 hours, wherein distilled water is used as a ball mill medium; pre-sintering for 6 hours in the atmosphere at temperature of 750 DEG C after drying; and (3) adding an adhesive to the powder obtained in the step (2), granulating, pressing and forming, and then sintering for 4 hours in the atmosphere at the temperature of 800 to 850 DEG C, wherein the adhesive is a polyving akohol solution with mass concentration of 5%; the quantity of added polyving akohol is 3% of the total mass of the powder. The ceramic prepared by the method can be sintered well at the temperature not greater than 850 DEGG C; the dielectric constant is up to 15.6 to 16.2; the quality factor (QF) is up to 119000 to 161000GHz; the resonant frequency temperature coefficients are small; the ceramic has extremely large application value in the industry.
Low-loss, temperature-stabilized and ultra-low dielectric constant type microwave dielectric ceramic LiZnV5O14
The invention discloses a temperature-stabilized and ultra-low dielectric constant type microwave dielectric ceramic LiZnV5O1 capable of being sintered at low temperature and a preparation method thereof. The method comprises the following steps: (1) weighting and mixing raw powder with purity exceeding 99.9% by weight of Li2CO3, ZnO and V2O5 according to the composition of the LiZnV5O1; (2) performing ball milling and mixing for the raw materials obtained in step (1) by a wet manner for 12 hours, wherein distilled water is used as a ball mill medium; pre-sintering for 6 hours in the atmosphere at temperature of 750 DEG C after drying; and (3) adding an adhesive to the powder obtained in the step (2), granulating, pressing and forming, and then sintering for 4 hours in the atmosphere at the temperature of 800 to 850 DEG C, wherein the adhesive is a polyving akohol solution with mass concentration of 5%; the quantity of added polyving akohol is 3% of the total mass of the powder. The ceramic prepared by the method can be sintered well at the temperature not greater than 850 DEGG C; the dielectric constant is up to 15.6 to 16.2; the quality factor (QF) is up to 119000 to 161000GHz; the resonant frequency temperature coefficients are small; the ceramic has extremely large application value in the industry.
Low-loss, temperature-stabilized and ultra-low dielectric constant type microwave dielectric ceramic LiZnV5O14
FANG LIANG (author) / SUN YIHUA (author) / LI DONGSHENG (author) / SUN XIAOHUA (author)
2015-07-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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