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.
出处
《硬质合金》
CAS
北大核心
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)
关键词
氧化锆
水热法
工艺参数
nano-sized zirconia
hydrothermal method
technological parameters
