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High-quality-factor low-dielectric-constant microwave dielectric ceramic BaLi2Zn2V8O24
The invention discloses a low-temperature-sintering high-quality-factor stable-temperature low-dielectric-constant microwave dielectric ceramic BaLi2Zn2V8O24 and a preparation method thereof. The preparation method comprises the following steps: (1) weighing and proportioning BaCO3, Li2CO3, ZnO and V2O5 original powders with the purity of higher than 99.9 wt% according to the composition of the BaLi2Zn2V8O24; (2) carrying out wet ball milling mixing on the raw materials in the step (1) for 12 hours by using distilled water as a ball milling medium, drying, and presintering in a 750-DEG C atmospheric atmosphere for 6 hours; and (3) adding an adhesive into the powder prepared in the step (2), granulating, compacting, and finally, sintering in an 800-850 DEG C atmospheric atmosphere for 4 hours, wherein the adhesive adopts a 5 wt% polyvinyl alcohol solution, and the addition amount of the polyvinyl alcohol is 3% of the total mass of the powder. The ceramic has favorable sintering property at 850 DEG C below, the dielectric constant reaches 22.6-23.5, the quality factor Qf value is up to 79000-106000 GHz, the temperature coefficient of resonance frequency is small, and the ceramic has great application value in industry.
High-quality-factor low-dielectric-constant microwave dielectric ceramic BaLi2Zn2V8O24
The invention discloses a low-temperature-sintering high-quality-factor stable-temperature low-dielectric-constant microwave dielectric ceramic BaLi2Zn2V8O24 and a preparation method thereof. The preparation method comprises the following steps: (1) weighing and proportioning BaCO3, Li2CO3, ZnO and V2O5 original powders with the purity of higher than 99.9 wt% according to the composition of the BaLi2Zn2V8O24; (2) carrying out wet ball milling mixing on the raw materials in the step (1) for 12 hours by using distilled water as a ball milling medium, drying, and presintering in a 750-DEG C atmospheric atmosphere for 6 hours; and (3) adding an adhesive into the powder prepared in the step (2), granulating, compacting, and finally, sintering in an 800-850 DEG C atmospheric atmosphere for 4 hours, wherein the adhesive adopts a 5 wt% polyvinyl alcohol solution, and the addition amount of the polyvinyl alcohol is 3% of the total mass of the powder. The ceramic has favorable sintering property at 850 DEG C below, the dielectric constant reaches 22.6-23.5, the quality factor Qf value is up to 79000-106000 GHz, the temperature coefficient of resonance frequency is small, and the ceramic has great application value in industry.
High-quality-factor low-dielectric-constant microwave dielectric ceramic BaLi2Zn2V8O24
FANG WEISHUANG (author) / WANG DAN (author) / SU HEPING (author)
2015-09-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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