摘要
以喷雾造粒 ＺｒＯ２粉料为研究对象，通过对粉料的压力－密度曲线及坯体的 ＳＥＭ显微结构分析，发现喷雾造粒粉料的粒度分布对坯体密度的影响较小；颗粒强度的大小是获得均匀的坯体结构的关键，颗粒的强度与其大小及环境湿度有关，因此颗粒适当的增塑及去除大颗粒均有利于坯体显微结构的改善．
The green compact prop6Yties of ZrO2 spray-dried powders were studied by means of pressure-density compaction curves of the powder and SEM photographs. The results show found that the granule size distribution of the spray-dried powder has a smaller effect on the green compact density. Granule yield strength, which depends on the dimension of granules and the relative humidity in the environment, is a critical factor influencing the uniformity of green compact microstructures. Therefore, plasticizing granules and eliminating larger granules can improve the microstructure of the green compact.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期999-1004,共6页
Journal of Inorganic Materials
关键词
喷雾造粒ZrO2粉料
坯体性能
粒度分布
环境湿度
ZrO_(2)spray-dried powder
green compact properties
granule size distribution
relative humidity in the environment
