Ｙ２Ｏ３稳定化陶瓷在功能材料中占突出的地位，优质的陶瓷材料很大程度上取决于优质粉末的制备．作者采用乙酸作络合剂，用它与氯氧化锆和硝酸钇络合反应，生成含钇离子和锆离子的乙酸络合物溶胶，溶胶经干燥和煅烧先后得到凝胶和粉末．由凝胶的ＤＴＡ和ＸＲＤ，可知含钇的二氧化锆粉末生成的主要相变和化学反应过程．最后由ＢＥＴ，ＴＥＭ，ＸＲＤ等方法检测，可得化学均匀性好，粒径达２０～５０ｎｍ的稳定化ＺｒＯ２超细粉． Y2O3 stabilizing ceramic occupies a prominent position in functional materials. High quality ceramic materials depend largely on the preparation of high quality powders. The authors used acetic acid as a complexing agent, and used it to complex with zirconium oxychloride and yttrium nitrate to form an acetic acid complex sol containing yttrium ions and zirconium ions. The sol was dried and calcined to obtain gels and powders. From the gel DTA and XRD, yttrium-containing zirconium dioxide powder generated by the main phase transition and chemical reaction process. Finally by BET, TEM, XRD and other methods to detect, get good chemical uniformity, particle size of 20 ~ 50nm stabilized ZrO2 ultrafine powder.