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Low-loss microwave dielectric ceramic sintered at medium temperature and preparation method thereof
The invention discloses low-loss microwave dielectric ceramic sintered at medium temperature. A stoichiometric equation of the low-loss microwave dielectric ceramic sintered at medium temperature is CoZnTiO4. A preparation method of the low-loss microwave dielectric ceramic sintered at medium temperature comprises the following steps: firstly respectively weighing chemical raw materials, namely CoO, ZnO and TiO2 and burdening; then carrying out ball milling, drying, sieving, pre-sintering at the temperature of 900 DEG C, and synthesizing clinker; and then carrying out secondary ball milling, sieving, pressing into a green body, sintering at the temperature of 1140-1220 DEG C, and carrying out heat preservation for 2-6 hours, so that the low-dielectric-loss microwave dielectric ceramic sintered at medium temperature is obtained. The low-loss microwave dielectric ceramic sintered at medium temperature has low dielectric loss, low sintering temperature and low dielectric coefficient and is titanate dielectric ceramic with excellent performance at present; meanwhile, raw materials are available, cost is low, a preparation technology is simple, and no pollution is produced in a preparation process, so that the low-loss microwave dielectric ceramic sintered at medium temperature has a broad application prospect.
Low-loss microwave dielectric ceramic sintered at medium temperature and preparation method thereof
The invention discloses low-loss microwave dielectric ceramic sintered at medium temperature. A stoichiometric equation of the low-loss microwave dielectric ceramic sintered at medium temperature is CoZnTiO4. A preparation method of the low-loss microwave dielectric ceramic sintered at medium temperature comprises the following steps: firstly respectively weighing chemical raw materials, namely CoO, ZnO and TiO2 and burdening; then carrying out ball milling, drying, sieving, pre-sintering at the temperature of 900 DEG C, and synthesizing clinker; and then carrying out secondary ball milling, sieving, pressing into a green body, sintering at the temperature of 1140-1220 DEG C, and carrying out heat preservation for 2-6 hours, so that the low-dielectric-loss microwave dielectric ceramic sintered at medium temperature is obtained. The low-loss microwave dielectric ceramic sintered at medium temperature has low dielectric loss, low sintering temperature and low dielectric coefficient and is titanate dielectric ceramic with excellent performance at present; meanwhile, raw materials are available, cost is low, a preparation technology is simple, and no pollution is produced in a preparation process, so that the low-loss microwave dielectric ceramic sintered at medium temperature has a broad application prospect.
Low-loss microwave dielectric ceramic sintered at medium temperature and preparation method thereof
LI LINGXIA (Autor:in) / LYU XIAOSONG (Autor:in) / SUN HAO (Autor:in) / LI SAI (Autor:in) / YE JING (Autor:in) / ZHANG SHUAI (Autor:in)
23.12.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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