Study on the Preparation of Stabilized Ultrafine Zirconia Powders by Using Reverse Micellae
用反向胶团制备稳定ZrO2超细粉的研究

The solubilization behavior of metal ions and ammonia solution in AOT-isooctane-water re verse micelles was investigated by injection method, the size of reverse micelles was then then determined with dynamic light scattering technique, and the microstructure of reverse micelles containing metal ions was characterized by using freeze fracture electron microscopic technique. With these micellar solutions, Y_2O_3 and CeO_2 stabilized ultrafine zirconia powders were prepared accordingly. Dif ferent kinds of preparative manners were tried to examine their effects on the quality of powders thereby derived. It was found that the swollen of metal ions in reverse micelles was an essential condition for obtaining a powder with good quality.