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Temperature stable microwave dielectric ceramic with medium dielectric constant and preparation method of temperature stable microwave dielectric ceramic
The invention discloses a temperature stable microwave dielectric ceramic material with medium dielectric constant. The chemical formula of the material is (Zn0.95Mg0.05)ZrNbTaO8. A preparation method of the ceramic material comprises the steps: firstly proportioning ZnO, MgO, ZrO2, Nb2O5 and Ta2O5 according to the chemical formula (Zn0.95Mg0.05)ZrNbTaO8, ball-milling, drying and screening the mixture, pre-sintering the mixture at 700-850 DEG C, and then ball-milling, drying and screening the mixture and pressing the mixture by a pressure to prepare a blank; and sintering the blank at 1150-1280 DEG C to prepare the microwave dielectric ceramic. According to the temperature stable microwave dielectric ceramic material disclosed by the invention, the dielectric constant epsilonr is 28.42-31.86, the quality factor Q*f is 85345-92745GHz, and the temperature coefficient of resonance frequency Tf is (-8.56-3.85)*10<-6>/DEG C. The preparation process is simplified, the time is shortened, and the energy cost is lowered.
Temperature stable microwave dielectric ceramic with medium dielectric constant and preparation method of temperature stable microwave dielectric ceramic
The invention discloses a temperature stable microwave dielectric ceramic material with medium dielectric constant. The chemical formula of the material is (Zn0.95Mg0.05)ZrNbTaO8. A preparation method of the ceramic material comprises the steps: firstly proportioning ZnO, MgO, ZrO2, Nb2O5 and Ta2O5 according to the chemical formula (Zn0.95Mg0.05)ZrNbTaO8, ball-milling, drying and screening the mixture, pre-sintering the mixture at 700-850 DEG C, and then ball-milling, drying and screening the mixture and pressing the mixture by a pressure to prepare a blank; and sintering the blank at 1150-1280 DEG C to prepare the microwave dielectric ceramic. According to the temperature stable microwave dielectric ceramic material disclosed by the invention, the dielectric constant epsilonr is 28.42-31.86, the quality factor Q*f is 85345-92745GHz, and the temperature coefficient of resonance frequency Tf is (-8.56-3.85)*10<-6>/DEG C. The preparation process is simplified, the time is shortened, and the energy cost is lowered.
Temperature stable microwave dielectric ceramic with medium dielectric constant and preparation method of temperature stable microwave dielectric ceramic
LI LINGXIA (Autor:in) / SUN HAO (Autor:in) / LYU XIAOSONG (Autor:in) / LI SAI (Autor:in)
21.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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