喷雾干燥法制备氧化锆增韧氧化铝陶瓷粉体  

Preparation of Zirconia Toughened Alumina Ceramic Powders Though Spray Drying Method

作　　者：倪占翔 银锐明[1] 徐凯[1] 贺思慧 文定 

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007

出　　处：《广州化工》2016年第5期1-2,23,共3页GuangZhou Chemical Industry

基　　金：国家自然科学基金资助项目(51274093)

摘　　要：以ZrOCl_2和Al(NO_3)_3为主要原料,Y(NO_3)_3为稳定剂,配制成溶液,采用喷雾干燥法制备氧化锆增韧氧化铝超微细粉体。在不同温度下,采用马弗炉对超细粉体进行煅烧处理。通过XRD、SEM表征方法研究Al_2O_3包裹ZrO_2复合粉末常压煅烧反应特性。结果表明:在1200℃煅烧条件下,易获得超细粉体Al_2O_3和ZrO_2晶粒的球状颗粒,且Y(NO_3)_3能保持ZrO_2四方相冷却至室温而未转变为单斜相。The mixture solution was prepared with ZrOCl_2 and Al（ NO_3）_3 as the main raw material,with Y（ NO_3）_3 as the stabilizer. Zirconia toughening alumina was prepared by spray drying method of super fine powder. Ultrafine powder was calcined by Muffle furnace at different temperature. Al_2O_3 parcel atmospheric calcined reaction characteristics of ZrO_2 composite powder was characterized by XRD,SEM. Through dynamic response,under the calcination temperature of1200 ℃,it was easy to get the powder of Al_2O_3 and ZrO_2 grain spherical particles,and Y（ NO_3）_3can keep ZrO_2 tetragonal phase cool to room temperature and not turn into a monoclinic phase.

关 键 词：氧化锆增韧氧化铝 喷雾干燥法 超细粉体 球状颗粒 

分 类 号：TQ174.75[化学工程—陶瓷工业]