Temperature stable type magnesium antimonite lithium base medium microwave composite ceramic and its preparation method

The invention discloses a temperature stable type magnesium antimonite lithium base medium microwave composite ceramic and its preparation method. A phase of a composite ceramic comprises Li3Mg2SbO6 phase in a rock salt structure, Ba3 (VO4)2 phase in an orthorhombic structure and a BaSb2O6 in a tril...

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Hauptverfasser: GONG YI, REN ZHAOYU, XING HUIYU, LIU NA, FU LONGXI, LIANG BAICHENG, YAO GUOGUANG, PEI CUIJIN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a temperature stable type magnesium antimonite lithium base medium microwave composite ceramic and its preparation method. A phase of a composite ceramic comprises Li3Mg2SbO6 phase in a rock salt structure, Ba3 (VO4)2 phase in an orthorhombic structure and a BaSb2O6 in a trilateral structure, wherein Li3Mg2SbO6 content is 54wt%-78wt%, Ba3 (VO4)2 content is 13wt%-38wt%, and the rest is BaSb2O6. Through adding Ba3 (VO4)2 presintering powder in the Li3Mg2SbO6 main powder body, the composite ceramic inhibits the rupturing of Li3Mg2SbO6, improves its temperature stability, and acquires a new material with good microwave dielectric property; the dielectric constant is 9.0-12.1, the quality factor is 18400-45100 GHz, and the resonate frequency temperature coefficient is -9.0 to +7.0 ppm/DEG C. The preparation method is rich in raw materials, simple in technique, and good for industrial production. 本发明公开了种温度稳定型锑酸镁锂基微波介质复合陶瓷及其制备方法,该复合陶瓷的物相包括岩盐结构的LiMgSbO相、正交结构的Ba(VO)相和三方结构的BaSbO相,其中LiMgSbO的含量为54