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Microwave dielectric ceramic material high in quality factor and preparation method thereof
The invention discloses a microwave dielectric ceramic material high in quality factor and a preparation method thereof. The expression of a target composite is ZnZr<0.8>Sn<0.2>Nb<2>O<8>. A traditional solid phase method is adopted, and the preparation method comprises the steps of weighing chemical raw materials including ZnO, ZrO<2>, SnO<2> and Nb<2>O<5> according to the stoichiometric ratio for material mixing, then conducting the ball-milling, drying, sieving and pre-burning at the temperature of 900 DEG C, synthesizing precursors, then adding polyvinyl alcohol, conducting the ball-milling, drying, sieving and pressure forming, and obtaining green bodies; conducting sintering on the green bodies at the temperature ranging from 1225 DEG C to 1325 DEG C, and obtaining the microwave dielectric ceramic material. The dielectric constant of the material is 26.30-27.37, Q * f is 46.595-76.814 GHz, and the temperature coefficient of resonant frequency is minus 66.286-minus 55.093 * 10<6>/DEG C. The microwave dielectric ceramic material high in quality factor and the preparation method thereof have the advantages that the technology is simple, no pollution is caused in the process, and the application prospect is wide.
Microwave dielectric ceramic material high in quality factor and preparation method thereof
The invention discloses a microwave dielectric ceramic material high in quality factor and a preparation method thereof. The expression of a target composite is ZnZr<0.8>Sn<0.2>Nb<2>O<8>. A traditional solid phase method is adopted, and the preparation method comprises the steps of weighing chemical raw materials including ZnO, ZrO<2>, SnO<2> and Nb<2>O<5> according to the stoichiometric ratio for material mixing, then conducting the ball-milling, drying, sieving and pre-burning at the temperature of 900 DEG C, synthesizing precursors, then adding polyvinyl alcohol, conducting the ball-milling, drying, sieving and pressure forming, and obtaining green bodies; conducting sintering on the green bodies at the temperature ranging from 1225 DEG C to 1325 DEG C, and obtaining the microwave dielectric ceramic material. The dielectric constant of the material is 26.30-27.37, Q * f is 46.595-76.814 GHz, and the temperature coefficient of resonant frequency is minus 66.286-minus 55.093 * 10<6>/DEG C. The microwave dielectric ceramic material high in quality factor and the preparation method thereof have the advantages that the technology is simple, no pollution is caused in the process, and the application prospect is wide.
Microwave dielectric ceramic material high in quality factor and preparation method thereof
LI LINGXIA (Autor:in) / YE JING (Autor:in) / SUN HAO (Autor:in) / LYU XIAOSONG (Autor:in) / YU JINGYANG (Autor:in)
11.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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High dielectric microwave ceramic dielectric material and preparation method thereof
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