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Low-temperature sintered high-dielectric microwave dielectric ceramic material and preparation method thereof
The invention discloses a low-temperature sintered high-dielectric microwave dielectric ceramic material and a preparation method thereof. The composition is Nix/3Nb2x/3Ti<1-x>O2, wherein x is equal to 0.2-0.4. The preparation method comprises the following steps: proportioning NiO, Nb2O5 and TiO2 raw materials according to a chemical formula, carrying out ball milling, drying, sieving, calcining,carrying out secondary ball milling, granulating, carrying out compression molding to obtain a cylindrical sample, and sintering at 1,125-1,200 DEG C to obtain the nickel-niobium-titanium microwave dielectric ceramic. The dielectric constant of the material is 75-89, Q * f >9,000, the temperature coefficient of resonance frequency is less than +/-10ppm/DEG C, and the material can be used for manufacturing microwave devices such as ceramic antennas, filter devices, resonators and the like. Compared with the prior art, the microwave dielectric ceramic material system has the beneficial effectsthat the dielectric constant of the nickel niobium titanate ceramic is 7589, Q * f >9,000, the temperature coefficient of resonance frequency is less than +/-10ppm/DEG C, and the prepared material system is novel, so that the microwave dielectric ceramic material with high dielectric constant and high quality can be provided; the method can be used for manufacturing microwave devices such as ceramic antennas, filter devices and resonators.
本发明公开一种低温烧结高介微波介质陶瓷材料及其制备方法，组成为Nix/3 Nb2x/3Ti1‑xO2，其中x=0.2‑0.4；先将NiO、Nb2O5、TiO2原料按化学式配料，再经过球磨、烘干、过筛、煅烧、二次球磨、造粒后压制成型为圆柱试样，于1125‑1200℃烧结，制得镍铌钛系微波介质陶瓷。本发明介电常数为75‑89，Q×f>9000，谐振频率温度系数为<±10ppm/℃，该材料可用于陶瓷天线、滤波器件、谐振器等微波器件制作。相对于现有技术，本方案的有益效果在于，本发明所述的微波介质陶瓷材料体系为镍铌钛酸盐陶瓷介电常数为75‑89，Q×f>9000，谐振频率温度系数为<±10ppm/℃，且制备材料体系新颖，能提供一种高介高品质的微波介质陶瓷材料，可用于陶瓷天线、滤波器件、谐振器等微波器件制作。
Low-temperature sintered high-dielectric microwave dielectric ceramic material and preparation method thereof
The invention discloses a low-temperature sintered high-dielectric microwave dielectric ceramic material and a preparation method thereof. The composition is Nix/3Nb2x/3Ti<1-x>O2, wherein x is equal to 0.2-0.4. The preparation method comprises the following steps: proportioning NiO, Nb2O5 and TiO2 raw materials according to a chemical formula, carrying out ball milling, drying, sieving, calcining,carrying out secondary ball milling, granulating, carrying out compression molding to obtain a cylindrical sample, and sintering at 1,125-1,200 DEG C to obtain the nickel-niobium-titanium microwave dielectric ceramic. The dielectric constant of the material is 75-89, Q * f >9,000, the temperature coefficient of resonance frequency is less than +/-10ppm/DEG C, and the material can be used for manufacturing microwave devices such as ceramic antennas, filter devices, resonators and the like. Compared with the prior art, the microwave dielectric ceramic material system has the beneficial effectsthat the dielectric constant of the nickel niobium titanate ceramic is 7589, Q * f >9,000, the temperature coefficient of resonance frequency is less than +/-10ppm/DEG C, and the prepared material system is novel, so that the microwave dielectric ceramic material with high dielectric constant and high quality can be provided; the method can be used for manufacturing microwave devices such as ceramic antennas, filter devices and resonators.
本发明公开一种低温烧结高介微波介质陶瓷材料及其制备方法，组成为Nix/3 Nb2x/3Ti1‑xO2，其中x=0.2‑0.4；先将NiO、Nb2O5、TiO2原料按化学式配料，再经过球磨、烘干、过筛、煅烧、二次球磨、造粒后压制成型为圆柱试样，于1125‑1200℃烧结，制得镍铌钛系微波介质陶瓷。本发明介电常数为75‑89，Q×f>9000，谐振频率温度系数为<±10ppm/℃，该材料可用于陶瓷天线、滤波器件、谐振器等微波器件制作。相对于现有技术，本方案的有益效果在于，本发明所述的微波介质陶瓷材料体系为镍铌钛酸盐陶瓷介电常数为75‑89，Q×f>9000，谐振频率温度系数为<±10ppm/℃，且制备材料体系新颖，能提供一种高介高品质的微波介质陶瓷材料，可用于陶瓷天线、滤波器件、谐振器等微波器件制作。
Low-temperature sintered high-dielectric microwave dielectric ceramic material and preparation method thereof
一种低温烧结高介微波介质陶瓷材料及其制备方法
12.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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