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Low-temperature-sintered zinc-titanium-niobium-series microwave dielectric ceramic
The invention discloses a low-temperature-sintered zinc-titanium-niobium-series microwave dielectric ceramic which is composed of Zn<0.5>Ti<0.5>NbO<4-x>LBS, wherein the LBS is an additive sintering aid and the x refers to mass percentage content, 1% <= x <= 4%. The LBS includes 50 wt% of Li2CO3, 40.24 wt% of B2O3 and 9.76 wt% of SiO2. The microwave dielectric ceramic is prepared through following steps: preparing the material according to the molar ratio of ZnO, TiO2, Nb2O5 to obtain a mixture, ball-milling and drying the mixture, pre-sintering the mixture at 900-1000 DEG C, adding the additive sintering aid for secondary material preparation, and finally sintering the mixture at 850-950 DEG C. The microwave dielectric ceramic is simple in preparation process without pollution. The preparation method is successfully reduced to less than 950 DEG C in sintering temperature with a high dielectric constant 33.66 and a high quality factor 33300 GHz maintained. The microwave dielectric ceramic is an excellent LTCC (low temperature co-fired ceramic) material.
Low-temperature-sintered zinc-titanium-niobium-series microwave dielectric ceramic
The invention discloses a low-temperature-sintered zinc-titanium-niobium-series microwave dielectric ceramic which is composed of Zn<0.5>Ti<0.5>NbO<4-x>LBS, wherein the LBS is an additive sintering aid and the x refers to mass percentage content, 1% <= x <= 4%. The LBS includes 50 wt% of Li2CO3, 40.24 wt% of B2O3 and 9.76 wt% of SiO2. The microwave dielectric ceramic is prepared through following steps: preparing the material according to the molar ratio of ZnO, TiO2, Nb2O5 to obtain a mixture, ball-milling and drying the mixture, pre-sintering the mixture at 900-1000 DEG C, adding the additive sintering aid for secondary material preparation, and finally sintering the mixture at 850-950 DEG C. The microwave dielectric ceramic is simple in preparation process without pollution. The preparation method is successfully reduced to less than 950 DEG C in sintering temperature with a high dielectric constant 33.66 and a high quality factor 33300 GHz maintained. The microwave dielectric ceramic is an excellent LTCC (low temperature co-fired ceramic) material.
Low-temperature-sintered zinc-titanium-niobium-series microwave dielectric ceramic
ZHANG PING (author) / ZHAO YONGGUI (author)
2016-01-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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