【摘要】 Ba3(VO4)2是最有希望实现低温共烧的微波介质陶瓷体系之一。以BaCO3,V2O5为原料,在不同温度下进行合成反应,对合成样品进行XRD物相分析,研究合成目标相Ba3(VO4)2的反应过程。结果表明:在粉料湿法球磨过程中,BaCO3与V2O5已开始反应生成BaV2O6,球磨后烘干样品的XRD图中不存在V2O5的衍射峰。合成目标相Ba3(VO4)2的中间产物有:Ba(VO3)2.H2O,BaV2O6,Ba2V2O7,Ba3(VO4)2。合成反应在450℃时开始出现目标相,800℃时得到单相Ba3(VO4)2。更多还原

【Abstract】 Ba3(VO4)2 is a kind of promising microwave dielectric ceramics system which can co-fire under low temperature together with silver or copper electrode.Ba3(VO4)2 powders were synthesized with BaCO3,V2O5 raw materials under different temperatures.The crystal structure and reaction process of the samples synthesized under different temperature were analyzed by X-ray diffraction.It showed that BaCO3 and V2O5 had begun to react without V2O5 peaks in XRD figures of powders when only treated by ball milling and drying.The intermediate products in the synthesizing processes of Ba3(VO4)2 are as follows: Ba(VO3)2·H2O,BaV2O6,Ba2V2O7,Ba3(VO4)2.Ba3(VO4)2 crystal phase began to be synthesized at 450℃ and the pure phase Ba3(VO4)2 can be obtained at 800℃ by XRD results.更多还原