β″-Al_2O_3喷雾干燥粉料的组成对陶瓷显微结构的影响  

Influence of Composition of Spray-Dried Powder on theMicrostructure of -Al2O3 Ceramics

作　　者：樊增钊[1] 顾中华[1] 

机构地区：[1]中国科学院上海硅酸盐研究所

出　　处：《硅酸盐通报》1999年第2期3-5,共3页Bulletin of the Chinese Ceramic Society

摘　　要：研究了喷雾干燥法制备的β″－Ａｌ２Ｏ３陶瓷前驱粉料的化学组成、合成工艺对其显微结构的影响，认为适当降低喷雾干燥粉料中的碱金属氧化物含量，改善量少组份的分布均匀性，提高β″－Ａｌ２Ｏ３相的转变程度有利于改善陶瓷的显微结构。The microstructure of -Al2O3 ceramics prepared from several spray-dried powders were investigated.The experimental results showed that the microstructure could be improved by the following approaches:1.to reduce the contents of Li2O and Na2O in the powders;2.to raise both the dispersion degree of Li2O and the ratio of -Al2O3 to -Al2O3 in the powders;3.to make all components as homogeneous as possible.

关 键 词：喷雾干燥 粉料 显微结构 成分 陶瓷 氧化铝 

分 类 号：TQ174.758[化学工程—陶瓷工业] TQ174.1[化学工程—硅酸盐工业]