水热合成纳米氧化锆工艺研究  

Study on Technology of Nano-sized Zirconia Prepared by Hydrothermal Method

作　　者：祝宝军[1] 陶颖[2] 蒋东[1] 贾汉友[1] 孔晨光[1] 黄诗婷[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《硬质合金》2008年第2期91-94,共4页Cemented Carbides

基　　金：国家自然科学基金项目资助(50602051);中国博士后科学基金(20070410987);湖南省博士后科学基金(2006FJ4237)

摘　　要：探讨了水热法合成氧化锆纳米材料过程中工艺参数对产物的影响。结果表明:水热反应温度越高、前驱体滴定pH值越高,越有利于生成立方相ZrO2;矿化剂可以降低反应的温度,矿化剂浓度增加,晶粒尺寸变小。通过实验得出水热合成纳米ZrO2最佳工艺条件为:水热温度220℃、反应时间48 h、前驱体滴定pH值为11、复合矿化剂K2CO3/KOH比率为3时,适宜浓度为0.1 mol/L。The effects of hydrothermal condition on the nano-sized ZrO2. synthesized by hydrothermal method were discussed. It was found that high temperature and high pH value lead to more c-ZrO2 in the production; mineralizers can effectively reduce the reaction temperature, the increased concentration of the mineralizers results in the smaller grain size of ZrO2. The optimized processing parameter for preparing nano-sized ZrO2 by hydrothermal method was suggested. The reaction temperature is 220 ℃ while the reaction time is 48 h. The pH value is 11. The rate of the compound mineralizer K2CO3/OH is 3 and the proper concentration is 0.1 mol/L.

关 键 词：氧化锆 水热法 工艺参数 

分 类 号：TB383.1[一般工业技术—材料科学与工程]