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 properties of ZrO 2 spray-dried powder are studied by means of pressure-density compaction curves of powder and SEM photographs.It is found that granule size distribution of spray-dried powder has a smaller effect on green compact density.Granule yield strength,which depends on the dimension of granule and the relative humidity in the environment,is a critical factor influencing the uniforming of green compact microstructure.Therefore,plasticization of granule and elimination of larger granule can improve the microstructure of green compact.
出处
《陶瓷学报》
CAS
1999年第3期171-176,共6页
Journal of Ceramics
关键词
喷雾造粒
坯体
性能
粒度分布
二氧化锆陶瓷
ZrO 2 spray-dried powder,green compact properties,granule size distribution,relative humidity in the environment
