铈基稀土抛光粉组织结构研究  

Study on the Microstructure of Ceria- based Rare Earth Polishing Powder

作　　者：程磊[1,2] 任慧平[1,3] 崔凌霄[2] 金自力[1] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]包头天骄清美稀土抛光粉有限公司,内蒙古包头014030 [3]内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室,内蒙古包头014010

出　　处：《稀土》2015年第6期45-50,共6页Chinese Rare Earths

基　　金：国家863资助项目(2010AA03A407)

摘　　要：以碳酸镧铈和少钕碳酸稀土为前驱体,采用工业制备方法制备铈基稀土抛光粉。研究了氟含量对铈基稀土抛光粉物相组成和形貌的影响以及磨削前后抛光粉颗粒的形貌变化。结果表明,铈基稀土抛光粉由基体相Ce_(1-x)La_xO_2和分布在其中的第二相组成。随着氟含量的增加第二相由CeF_2、LaF_2、LaF_3的顺序发生种类和含量的变化。比较研磨实验前后发现,研磨后抛光粉颗粒被明显磨削,磨削发生在颗粒的尖角部位,磨削方向为颗粒的〈001〉方向,磨削后颗粒(100)面增加,(111)面减少。Ceria- based rare earth polishing powder was prepared with lanthanum cerium carbonate and neodymium - poor RE carbonate as precursor. The influence of fluorine content on phase composition and morphology and the change of morphology of polishing powder particles before and after grinding were investigated. The results show that the ceria - based rare earth polishing powder consists of the base phase CeI _xLaxO2 and the second phase which distribute in the base phase. The second phase is changed from CeF2 to LaF2 and LaF3 with the increase of fluorine content. By comparing what happened before and after the experiment, the particles are obviously grinded at the particles sharp angle. The grinding occurs at （001） direction . It is find that （100） crystal plane is increased and （111） crystal plane is induced at the end of grinding.

关 键 词：稀土抛光粉 组织结构 氟含量 形貌 研磨 

分 类 号：O614.33[理学—无机化学]