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Temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic and preparation method thereof
The invention discloses a temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic and a preparation method thereof. The temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic has a chemical formula 0.43(Zn 0.85Co0.15)ZrNbTaO8+0.57TiO2. The preparation method comprises the following steps: respectively weighing and batching chemical raw materials ZnO, CoO, ZrO2, Nb2O5 and Ta2O5 according to a stoichiometric ratio; carrying out ball milling, drying and sieving, and presintering at 950 DEG C, so as to synthesize clinkers; and carrying out secondary ball milling and compression forming to obtain blanks, sintering at 1160-1240 DEG C, and preserving the temperature for 2-6 hours, so as to prepare a temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic material. According to the preparation method, the temperature coefficient of resonance frequency approximates to zero (tauf-0*10<-10>/DEG C), the niobium tantalite microwave dielectric ceramic belongs to a microwave dielectric material with a medium dielectric constant (35-40), the quality factor is higher than 35,000GHz, and the sintering temperature is relatively low; the process is simple, and the pollution is avoided in the preparation process; the niobium tantalite microwave dielectric ceramic has wide application prospect.
Temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic and preparation method thereof
The invention discloses a temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic and a preparation method thereof. The temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic has a chemical formula 0.43(Zn 0.85Co0.15)ZrNbTaO8+0.57TiO2. The preparation method comprises the following steps: respectively weighing and batching chemical raw materials ZnO, CoO, ZrO2, Nb2O5 and Ta2O5 according to a stoichiometric ratio; carrying out ball milling, drying and sieving, and presintering at 950 DEG C, so as to synthesize clinkers; and carrying out secondary ball milling and compression forming to obtain blanks, sintering at 1160-1240 DEG C, and preserving the temperature for 2-6 hours, so as to prepare a temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic material. According to the preparation method, the temperature coefficient of resonance frequency approximates to zero (tauf-0*10<-10>/DEG C), the niobium tantalite microwave dielectric ceramic belongs to a microwave dielectric material with a medium dielectric constant (35-40), the quality factor is higher than 35,000GHz, and the sintering temperature is relatively low; the process is simple, and the pollution is avoided in the preparation process; the niobium tantalite microwave dielectric ceramic has wide application prospect.
Temperature-stable high-Q-value niobium tantalite microwave dielectric ceramic and preparation method thereof
LI LINGXIA (author) / LYU XIAOSONG (author) / SUN HAO (author) / YE JING (author) / LI SAI (author) / ZHANG SHUAI (author)
2015-12-16
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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