以Al(NO3)3·9H2O、Mg(NO3)2·6H2O和TEOS为前躯体原料,采用TritonX-100/n-Hexane/ Cyclohexane作为乳液反应体系合成了堇青石(2MgO· 2Al2O3·5SiO2)纳米粉体.采用目测法对形成稳定W/O型微乳液体系的拟三元相图进行了测试与绘制.结果表明:该粉体有效粒径为100nm,粉体团聚度较低,可于930℃下低温烧结,烧结体具有较高的致密度(大于理论密度的98％)；烧结过程中a-堇青石直接从无定形态中析出；920℃烧结2h的陶瓷样品具有良好的介电性能(ε=2.87,tanδ=0.00011；1GHz),该材料具备与Ag电极低温共烧的条件,是应用于高频片式电感等电子元器件的理想介质材料.
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