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Low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material
The invention discloses a low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material. The chemical formula of the microwave dielectric ceramic material is 0.6 MgMoO4+0.4TiO2. MgO and MoO3 are blended according to the stoichiometric equation MgMoO4, dried at the temperature of 100 DEG C to 120 DEG C after being subjected to ball mill and then screened; then, presintering is conducted at the temperature of 700 DEG C to 850 DEG C, and TiO2 powder is presintered at the temperature of 800 DEG C to 950 DEG C; the two kinds of powder are blended according to the stoichiometric equation 0.6 MgMoO4+0.4TiO2, and a green body is prepared in a pressed mode after ball mill, drying and screening; the green body is sintered at the temperature of 800 DEG C to 950 DEG C, and microwave dielectric ceramic is obtained. According to the low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material, the electric constant epsilon r ranges from 8.17 to 9.78, the quality factor Qf ranges from 41585 GHz to 53557 GHz, and the temperature coefficient tau f of the resonance frequency ranges from -75.45*10<-6>/DEG C to -62.87*10<-6>/DEGC. The preparation process is simplified, and the time cost and the energy cost are saved.
Low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material
The invention discloses a low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material. The chemical formula of the microwave dielectric ceramic material is 0.6 MgMoO4+0.4TiO2. MgO and MoO3 are blended according to the stoichiometric equation MgMoO4, dried at the temperature of 100 DEG C to 120 DEG C after being subjected to ball mill and then screened; then, presintering is conducted at the temperature of 700 DEG C to 850 DEG C, and TiO2 powder is presintered at the temperature of 800 DEG C to 950 DEG C; the two kinds of powder are blended according to the stoichiometric equation 0.6 MgMoO4+0.4TiO2, and a green body is prepared in a pressed mode after ball mill, drying and screening; the green body is sintered at the temperature of 800 DEG C to 950 DEG C, and microwave dielectric ceramic is obtained. According to the low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material, the electric constant epsilon r ranges from 8.17 to 9.78, the quality factor Qf ranges from 41585 GHz to 53557 GHz, and the temperature coefficient tau f of the resonance frequency ranges from -75.45*10<-6>/DEG C to -62.87*10<-6>/DEGC. The preparation process is simplified, and the time cost and the energy cost are saved.
Low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material
LI LINGXIA (author) / SUN HAO (author) / LYU XIAOSONG (author) / LI SAI (author)
2015-10-28
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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