Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-temperature sintered microwave dielectric ceramic material with middle permittivity
The invention discloses a low-temperature sintered microwave dielectric ceramic material with a middle dielectric constant. The material has a chemical formula of (Zn0.9Ni0.1)ZrNb2O8+2wt%BaCu(B2O5). The material is prepared by comprising the following steps: compounding ZnO, NiO, ZrO2 and Nb2O5 according to the chemical formula of (ZnO0.9Ni0.1)ZrNb2O8 so as to obtain a powder A for short, and compounding BaCO3, CuO and H3BO3 according to the chemical formula of BaCu(B2O5) so as to obtain a powder B for short; respectively carrying out ball milling, drying and sieving, and presintering the powder A at 1000 to 1150 DEG C and the powder B at 700 to 850 DEG C; then mixing the powder A and the powder B according to the chemical formula of (Zn0.9Ni0.1)ZrNb2O8+2wt%BaCu(B2O5), carrying out ball milling, drying and sieving, then carrying out compression molding into a green body, and sintering the green body at 800 to 950 DEG C so as to prepare the microwave dielectric ceramic with the middle dielectric constant. According to the invention, dielectric constant epsilon r is 26.53 to 29.45; quality factor Q to f is 25430 to 43448 GHz; temperature coefficient tau f of resonant frequency is <45.45> to <32.87> to 10<6>/DEG C; meanwhile, preparation process is simplified, and time and energy cost are saved.
Low-temperature sintered microwave dielectric ceramic material with middle permittivity
The invention discloses a low-temperature sintered microwave dielectric ceramic material with a middle dielectric constant. The material has a chemical formula of (Zn0.9Ni0.1)ZrNb2O8+2wt%BaCu(B2O5). The material is prepared by comprising the following steps: compounding ZnO, NiO, ZrO2 and Nb2O5 according to the chemical formula of (ZnO0.9Ni0.1)ZrNb2O8 so as to obtain a powder A for short, and compounding BaCO3, CuO and H3BO3 according to the chemical formula of BaCu(B2O5) so as to obtain a powder B for short; respectively carrying out ball milling, drying and sieving, and presintering the powder A at 1000 to 1150 DEG C and the powder B at 700 to 850 DEG C; then mixing the powder A and the powder B according to the chemical formula of (Zn0.9Ni0.1)ZrNb2O8+2wt%BaCu(B2O5), carrying out ball milling, drying and sieving, then carrying out compression molding into a green body, and sintering the green body at 800 to 950 DEG C so as to prepare the microwave dielectric ceramic with the middle dielectric constant. According to the invention, dielectric constant epsilon r is 26.53 to 29.45; quality factor Q to f is 25430 to 43448 GHz; temperature coefficient tau f of resonant frequency is <45.45> to <32.87> to 10<6>/DEG C; meanwhile, preparation process is simplified, and time and energy cost are saved.
Low-temperature sintered microwave dielectric ceramic material with middle permittivity
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
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2021
Medium-temperature sintered microwave dielectric ceramic material and preparation method thereof
| Europäisches Patentamt | 2023
Low-temperature sintered microwave dielectric ceramic material and preparation method thereof
| Europäisches Patentamt | 2024
Low-temperature sintered microwave dielectric ceramic material and preparation method thereof
| Europäisches Patentamt | 2024