湿化学法制备Li2TiO3氚增殖陶瓷微球的最优工艺

摘要

With citric acid as binder, Li2TiO3 pebbles with diameter of 1. 20 mm and relative density about 91%TD were prepared by an optimized wet chemical method. Thermodynamical analysis, phase analysis and morphology observation were made on the product. The results showed that the sphericity of the Li2TiO3 pebbles was significantly affected by the amount of citric acid. The microstructure of the Ii2TiO3 pebbles was uniform and temperature-sensitive. The average grain size of the pebbles is below 3 μm after sintering at 1 050 ℃ for 6 h.%以柠檬酸为粘结剂,采用湿化学法成功制备了直径为1.20mm、相对密度为91％TD的Li2TiO3陶瓷微球,并系统地进行了热力学分析、物相分析和形貌观察.结果表明,粘结剂含量显著影响微球的球形度；所制备的Li2TiO3陶瓷微球具有均匀并且温度敏感的微观结构,在1 050℃下烧结6h后,平均晶粒尺寸小于3μm.