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Co-based temperature-stable type microwave dielectric ceramic and preparing method thereof
The invention discloses a Co-based temperature-stable type microwave dielectric ceramic and a preparing method thereof, and belongs to the field of electronic ceramic and preparing thereof. The ceramic is expressed as (1-0.5x)TiO2-(1-0.5x)CoO-0.5xNb2O5, wherein x is larger than or equal to 0.5 and smaller than or equal to 0.75. The Co-based temperature-stable type microwave dielectric ceramic is prepared with the simplest and most effective solid-phase reaction sintering method. The preparing method includes the steps that a formula in the proper proportion is selected, proper initial oxide is selected, the various kinds of oxide are mixed to be even through primary ball milling and primarily reacted through the pre-sintering process, the size of particles of the reactants is refined through secondary ball milling, and finally the required ceramic sample is obtained through the sintering process. By means of the simple, practicable and effective preparing method, the dielectric constant of the obtained ceramic sample is changed from 31.3 to 42 along with changes of ingredients, Qf is distributed from 40,900 GHz to 42,300 GHz, the temperature coefficient of resonance frequency is close to zero and easy to control (-16 ppm/DEG C to +18 ppm/DEG C), and sintering temperature ranges from 1,250 DEG C to 1,340 DEG C.
Co-based temperature-stable type microwave dielectric ceramic and preparing method thereof
The invention discloses a Co-based temperature-stable type microwave dielectric ceramic and a preparing method thereof, and belongs to the field of electronic ceramic and preparing thereof. The ceramic is expressed as (1-0.5x)TiO2-(1-0.5x)CoO-0.5xNb2O5, wherein x is larger than or equal to 0.5 and smaller than or equal to 0.75. The Co-based temperature-stable type microwave dielectric ceramic is prepared with the simplest and most effective solid-phase reaction sintering method. The preparing method includes the steps that a formula in the proper proportion is selected, proper initial oxide is selected, the various kinds of oxide are mixed to be even through primary ball milling and primarily reacted through the pre-sintering process, the size of particles of the reactants is refined through secondary ball milling, and finally the required ceramic sample is obtained through the sintering process. By means of the simple, practicable and effective preparing method, the dielectric constant of the obtained ceramic sample is changed from 31.3 to 42 along with changes of ingredients, Qf is distributed from 40,900 GHz to 42,300 GHz, the temperature coefficient of resonance frequency is close to zero and easy to control (-16 ppm/DEG C to +18 ppm/DEG C), and sintering temperature ranges from 1,250 DEG C to 1,340 DEG C.
Co-based temperature-stable type microwave dielectric ceramic and preparing method thereof
PANG LIXIA (Autor:in) / LIU WEIGUO (Autor:in) / ZHOU DI (Autor:in) / JI HONGFEN (Autor:in) / WANG XIN (Autor:in)
20.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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