团聚参数在氧化锆超细粉末团聚状态表征中的应用  

APPLICATION OF A NEW AGGLOMERATION PARAMETER IN CHARACTERIZING THE STATE OF AGGLOMERATION OF ULTRAFINE ZIRCONIA POWDERS

作　　者：葛荣德 赵天从[1] 刘志宏[1] 陈慧光 张多默 

机构地区：[1]中南工业大学

出　　处：《粉末冶金技术》1994年第2期87-90,共4页Powder Metallurgy Technology

基　　金：国家自然科学基金

摘　　要：提出了新的团聚参数Ｎａ（５０），定义为团聚体平均包含粉末一次颗粒的数目。以共沉淀法制备的ＺｒＯ＿２（Ｙ＿２Ｏ＿３）超级粉末的团聚状态为研究对象，将Ｎａ（５）与目前较常用的团聚参数ＡＦ（５０）及ＡＦ＊（５０）进行了比较。结果表明，Ｎａ（５０）能更好地反映粉末的实际团聚状态。此外，导出了团聚体的平均Ｓｔｏｋｅｓ球径与团聚体相对密度的关系。A new agglomeration parameter N.(50) defined as the average primary particle number included in each agglomerate is proposed. With the application of characterizing the saute of agglomeration of ultrafine ZrO2 (Y2O3) powders prepared by co-precipitation, a comparison between N. (50) and the currently used agglomeration parameters AF(50) as well as AF' (50) is made. The resultS show that the parameter Na (50) is better in representing the true state of agglomeration of poWders. In addition,the relations between the average Stokes diameter and the relative density of the agglomeration has been inferred.

关 键 词：团聚 氧化锆 超细粉末 

分 类 号：TF123.72[冶金工程—粉末冶金]