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采用钽镁共沉淀法制备ＭｇＴａ２Ｏ６粉体，然后与ＢａＣＯ３粉体混合制备Ｂａ（Ｍｇ１／３Ｔａ２／３）Ｏ３（简称ＢＭＴ）微波陶瓷材料．成功地解决了ＴａＣｌ５溶解问题．对钽镁共沉条件和粉体热分解工艺与粉体的平均粒径和钽镁比例关系；ＢＭＴ陶瓷制备工艺与材料的微观结构和微波性能关系进行了研究．制备的ＭｇＴａ２Ｏ６晶相粉体平均粒径为０．３μｍ，最大与最小粒径比为５．制备的ＢＭＴ陶瓷几乎不含ＢａＴａ２Ｏ６等杂相，无载Ｑ值可达５４００（１０ＧＨｚ下）
The MgTa2O6 powder was prepared by the tantalum-magnesium coprecipitation method and then the Ba (Mg1 / 3Ta2 / 3) O3 (BMT) microwave ceramic material was prepared by mixing with BaCO3 powder. Successfully solved the TaCl5 dissolution problem. The relationship between the conditions of tantalum-magnesium co-precipitation, the thermal decomposition of powder and the average particle size of powder and the ratio of tantalum to magnesium was studied. The relationship between the preparation process of BMT ceramic and the microstructure and microwave properties of the material was also studied. The prepared MgTa2O6 crystal phase powder has an average particle size of 0.3 μm and a maximum to minimum particle size ratio of 5. The prepared BMT ceramic contains almost no impurity such as BaTa2O6, and the unloaded Q value can reach 5400 (at 10 GHz)