喷雾造粒ZrO_(2)粉料坯体性能的研究  

Green Compact Properties of ZrO_(2)Spray-Dried Powders

作　　者：丁湘[1] 李金有[1] 杨正方[1] 

机构地区：[1]天津大学材料学院,天津300072

出　　处：《无机材料学报》2000年第6期999-1004,共6页Journal of Inorganic Materials

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.

关 键 词：喷雾造粒ZrO2粉料 坯体性能 粒度分布 环境湿度 

分 类 号：TQ174.758[化学工程—陶瓷工业]